As 2025 comes to a close, we’re proud to reflect on a year of innovation, collaboration, and impact. From advancing ecosystem restoration and water quality initiatives to sharing expertise on the global stage, these milestones showcase the dedication of our team and the strength of our partnerships. None of this would have been possible without the trust and support of our clients, collaborators, and community. Join us as we celebrate the Top 10 Successes of 2025:

1. Completed the Full Removal of 2 Dams:

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After more than a century of standing, the Paulina Lake Dam on the Paulins Kill River in Warren County, NJ, was fully removed, marking a transformative milestone for one of New Jersey’s largest tributaries to the Delaware River. Led by The Nature Conservancy New Jersey and funded by NJDEP Division of Fish and Wildlife, this multi-phase project concluded this summer with the third and final phase that included adaptive management work and habitat enhancements to boost biodiversity. We provided engineering design and oversight throughout the effort helping restore natural river flow and improve ecological resilience. On the Farmington River in Connecticut, the Winchell-Smith Dam was fully removed after more than a decade of planning and collaboration. Spearheaded by the Farmington River Watershed Association, this project reconnects 30 miles of critical upstream habitat, improving fish passage for species like American shad, alewife, and American eel. We contributed engineering, design, and project oversight, working alongside partners including Miss Porter’s School, CTDEEP Fisheries, and RiverLogic Solutions. The removal enhances ecological health, fish passage, public safety, and recreational opportunities along one of New England’s most celebrated rivers.

2. Secured $3.2 Million in Grant Funding for our Clients:

We delivered incredible results for our nonprofit and government partners, securing over $3.2 million in funding to support projects that restore ecosystems, enhance habitats, improve water quality, and implement watershed-based green infrastructure and stormwater BMPs, with grants awarded through the National Fish and Wildlife Foundation’s Delaware Watershed Conservation Fund and Section 319(h) of the federal Clean Water Act, administered by NJDEP’s Watershed and Land Management Program. We assisted the Borough of Mountain Lakes in securing grant funding from the New Jersey Highlands Council to develop a comprehensive Lake and Watershed Management Plan for nine lakes within the Borough. Also noteworthy: of the 17 total 319(h) grants awarded statewide this year, we’re proud to be a partner on five, demonstrating our commitment to advancing watershed restoration and sustainability.

3. Launched an Innovative Initiative to Study HABs in the Delaware River Watershed:

In partnership with Friends of Hopewell Valley Open Space, we kicked off a groundbreaking research project: “Monitoring Harmful Algal Blooms (HABs) in the Delaware River Watershed Using Drones and Spatial Analysis.” Funded by the National Fish and Wildlife Foundation through the Delaware Watershed Conservation Fund, this $1M initiative leverages drone technology, advanced data modeling, and community science to improve forecasting and management of HABs across a 73-mile stretch of the Delaware River and 23 associated waterbodies. We conceptualized and designed the project and are leading technical implementation, including field survey design, drone operations, data analysis, and volunteer training. By integrating drone-based remote sensing, on-the-water sampling, and spatial analysis, we aim to develop predictive tools for early detection and mitigation of HABs, helping protect drinking water supplies, wildlife, and local economies. This collaborative effort includes partners such as NYC College of Technology, Trenton Water Works, Mercer County Park Commission, The College of New Jersey, Aqua-PA, Philadelphia Water Department, Bucks County Conservation District, and Turner Designs. Data collection began in August will resume in Spring/Summer 2026 and culminate in 2027 with a final report.

4. Earned 7 Prestigious Awards:

Just this month, Princeton Hydro was honored with the Princeton Mercer Regional Chamber “Innovator of the Year” Award and President Geoffrey M. Goll, PE received the “Notable Achievement” Award from SAME New Jersey Post during their Annual Holiday Luncheon. Geoffrey also received a “Lifetime Achievement Award” from the New Jersey Highlands Coalition for his dedication to protecting and enhancing New Jersey’s environmental, cultural, and natural resources. For another year in row, Princeton Hydro was recognized as one of New Jersey’s “Top Workplaces of 2025.” In partnership with Warrington Township, our transformative ecological uplift initiative at Lion’s Pride Park won the 2025 Pennsylvania Governor’s Award for Environmental Excellence. We were selected as the recipient of the Friends of Hopewell Valley Open Space “Corporate Conservation Recognition" Award, a distinction that celebrates our long-standing dedication to advancing ecological resilience through science-based, innovative solutions. And, along with Crow Holdings, we were chosen for the United Away "Spirit of Philanthropy” Award.

5. Constructed 2 Transformative Ecosystem Restoration Projects:

In New York, we completed the Spring Creek North Ecosystem Restoration Project, revitalizing 43 acres of degraded habitat within the historic Jamaica Bay salt marsh system. The project restored a mosaic of ecosystems, including low marsh, high marsh, scrub-shrub wetland, and maritime upland, through activities like recontouring uplands to intertidal elevations, thin-layer sand placement, invasive species removal, and native plantings. This effort improves water quality, biodiversity, and wildlife habitat, contributing to the long-term health of Jamaica Bay. In the Meadowlands of New Jersey, we helped design and build the Steven R. Rothman Overlook and Preserve, a new five-acre public open space within the 587-acre Richard P. Kane Natural Area. The site offers ADA-accessible trails, sweeping views of the Meadowlands and NYC skyline, and a gateway into one of the state’s most ecologically significant landscapes along the Atlantic Flyway. We provided environmental, civil, and geotechnical engineering, landscape architecture, and construction oversight, ensuring the space honors decades of conservation work while creating opportunities for community connection and nature-based recreation.

6. Celebrated Numerous Staff Achievements:

Our team continues to shine, reaching new heights in research, professional development, and industry leadership. Senior Wildlife Biologist Michael McGraw, CSE, QAWB, ACE co-authored a study published in Agriculture, Ecosystems & Environment, a leading journal in agroecological research, and was featured on the Native Plants, Healthy Planet podcast, a Top 20 Nature Apple podcast with over 7,000 monthly listeners. Senior Director of Field Services Scott Churm became a PRO Certified EutroSORB® Specialist, and Geotechnical Engineer Matthew Pappas, CSS earned the highly respected Certified Construction Specifier credential from the Construction Specifications Institute. We also welcomed five new team members: Controller Andy Ryba; Senior Water Resources Engineer Rich Farella, PE, CFM; Staff Engineer Patricia Hurley, EIT; Marketing & Proposal Manager Amie Souza, and Aquatics Project Manager Tanya Dapkey, CE who earned her ESA Certified Ecologist credential this year. Way to go, team! Your dedication and talent continue to inspire us all.

7. Partnered with Billion Oyster Project to Study Urban Reef Ecosystems:

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Princeton Hydro teamed up with Billion Oyster Project, AKRF, and Monmouth University to explore how restored oyster reefs are revitalizing New York City’s waterways. The project, “Monitoring of Mobile Estuarine Organisms at Restored Oyster Reefs,” combines hands-on species surveys with cutting-edge environmental DNA (eDNA) analysis to capture a complete picture of reef biodiversity. As the field sampling lead, our team conducted monitoring at sites including Brooklyn Bridge Park, Bush Terminal Park, Flushing Bay, and Paedergat Basin. These efforts revealed a diverse array of estuarine life, from schooling fish to a surprise dogfish, and collected eDNA samples for advanced species detection. By integrating traditional sampling with innovative genetic tools, this collaboration is helping refine strategies for scaling up oyster reef restoration and strengthening the ecological resilience of New York Harbor.

8. Advanced International Collaboration in Aquatic Science and River Restoration:

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This year, Princeton Hydro shared expertise on the global stage and celebrated major milestones in international river restoration. Senior Technical Director of Ecological Services Dr. Fred Lubnow traveled to Lisbon, Portugal, for the 17th International Symposium on Aquatic Plants, where he presented on managing submerged aquatic vegetation to prevent harmful algal blooms. Director of Aquatics Michael Hartshorne spoke at the Southern African Society for Aquatic Scientists Congress in Pietermaritzburg, South Africa, an event that convened researchers, industry professionals, and government leaders to advance aquatic science through collaboration and applied research. President Geoffrey M. Goll, PE, participated in a symposium in Durban, South Africa, focused on Dam Management and Restoration of River Connectivity organized by Dam Removal South Africa and the Institute of Natural Resources. We also celebrated progress in Portugal: Dam Removal Europe published a new case study on the Perofilho Weir removal and stream restoration project in Santarém for which Geoffrey M. Goll contributed to the removal design, helping reconnect 2.5 km of stream habitat and restore fish passage. In February, we published a blog highlighting Geoffrey's ongoing collaboration in Portugal and his October 2024 visit to key restoration sites, showcasing how barrier removal is addressing river fragmentation and creating a blueprint for future efforts.

9. Unveiled 4 New Public Resources:

We collaborated with the Bucks County Conservation District and Bucks County Planning Commission to launch the Lake Luxembourg Restoration StoryMap, an interactive tool that chronicles the decade-long effort to restore Lake Luxembourg’s Conservation Pool. This dynamic resource combines maps, multimedia, and storytelling to make restoration details accessible to the public. Working with Rutgers University’s Climate Change Resource Center and The Nature Conservancy, we contributed technical expertise to the New Jersey Nature-Based Solutions: Planning, Implementation, and Monitoring Reference Guide. This comprehensive guide offers science-based strategies, case studies, and funding resources to help communities implement nature-based solutions statewide. In partnership with the Borough of Harveys Lake, we developed a ArcGIS StoryMap that chronicles the community’s long-standing commitment to water quality, showcases a pilot project aimed at reducing stormwater nutrient pollution, and connects local efforts to broader Chesapeake Bay watershed health. And, for the Lower Makefield Township Environmental Advisory Council, Geoffrey M. Goll, PE, developed a Rain Gardens 101 step-by-step tutorial on designing and building rain gardens. The recorded presentation, now available to the public, provides practical tips and visuals to help homeowners improve stormwater management and support pollinator habitats.

10. Participated in 50+ Conferences, Workshops, Community Gatherings and Sponsored 30+ Events:

We strengthened partnerships and advanced critical conversations through a year of dynamic engagement. From technical conferences to community events, our team shared expertise, fostered collaboration, and inspired action on climate resilience, water quality, and ecosystem restoration. Princeton Hydro was proud to participate as a sponsor, exhibitor, and session presenter at the New Jersey Association for Floodplain Management 20th Annual Conference and Exhibition - Christiana Pollack, CERP, CFM, GISP, Director of Restoration and Resilience, presented on strategies to address climate-driven impacts in Philadelphia and Clay Emerson, PhD, PE, CFM, Senior Technical Director of Engineering, led a session on establishing a stormwater utility. We participated in six SAME events, including the National Small Business Conference in Phoenix, AZ. President Geoffrey M. Goll, PE, presented to 300+ attendees during the 2025 National Dam Safety Program Technical Seminar. We gave two presentations at the Society for Ecological Restoration World Conference. Senior Manager of Aquatics Chris L. Mikolajczyk, CLM, and Senior Technical Director of Ecological Services Dr. Fred Lubnow presented at the 42nd Annual NYSFOLA Conference. As part of the Invasive Aquatic Plant Management portion of the Northeast Aquatic Plant Management Society Annual Meeting, Aquatic Ecologist Jesse Smith led a workshop on Brittle Naiad (Najas minor) Management. Aquatics Project Manager and Environmental Scientist Pat Rose presented at NJDEP’s 6th Annual Harmful Algal Bloom Summit. During the New Jersey Coastal Resilience Collaborative for its Coastal Ecological Restoration Technical Workshop, Director of Marketing & Communications, Dana Patterson Grear, presented “How to Build a Digital Communications Toolkit for Climate Action.” Locally, we celebrated community and stewardship through events like the Trenton Reel and Restore Day and Trenton River Fest. These are just a few highlights from a truly impactful year!

As we look back on these achievements, we are deeply grateful for the relationships that made them possible. Your confidence in and support of our mission empowers us to innovate, restore, and protect the natural resources we all depend on. Here’s to building on this momentum in 2026 and continuing to make a positive impact together!

By Mikhail Velez, Communications Coordinator

Across Eswatini’s rural landscape, geography often dictates opportunity. Rivers that swell during rainy seasons can separate families from schools, healthcare, and markets, making daily routines unpredictable and sometimes unsafe. In the three years before the Imphumelelo Footbridge was completed, five people tragically lost their lives and ten were injured attempting to cross during floods. To help address this challenge, volunteers from the Engineers in Action chapter at Rutgers University joined with other students from the University of Iowa, Hofstra University, and Northwestern University, during the summer of 2025, living and working alongside local communities to build the Imphumelelo Footbridge. Each student chapter is responsible for raising the funds needed to purchase construction materials, making the project both a test of resourcefulness and commitment. For Rutgers students, the experience offered not only the chance to apply technical skills in the field, but also invaluable hands-on learning that deepened their understanding of engineering in practice.

At 108 meters long, the Imphumelelo Footbridge is the second longest bridge completed by the Rutgers Chapter in Eswatini, a small, landlocked country in Southern Africa, funded in part by the Microprojects Programme and constructed through the nonprofit Engineers in Action. Now providing safe, year‑round access for more than 1,320 people, the bridge drastically reduces travel distances to healthcare and schools, while standing as a testament to Rutgers students’ commitment to connecting communities and expanding opportunity.

This video offers a glimpse into the construction process itself, showing how the Rutgers Engineers in Action Chapter worked alongside community members in Eswatini to bring the bridge to life. Viewers can see the challenges that arose, the teamwork that solved them, and the collaborative spirit that carried the project from planning to completion:

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Strength in Collaboration: Building the Imphumelelo Footbridge

The Imphumelelo Footbridge was the result of four months of careful preplanning and two months of intensive construction in southern Eswatini. This was the farthest site Engineers in Action has worked on, located nearly three hours by car from the nearest city. The remote setting added complexity to the project, but it also underscored the importance of building a reliable crossing for the communities who would depend on it.

Construction was not without its challenges. When hoisting the suspension cables, the team’s winch broke because it was old and rusted. With the guidance of local masons, students improvised solutions, even resorting to manually knocking the cables to adjust their height. On anchor pouring day, when several batches of concrete were poured to secure the massive blocks through which the cables run, shifting wood supports forced the team to pause, reassess, and slightly reduce the bearing load to ensure stability. Concrete mixing also presented difficulties, since batches sometimes contained too much water.

Rutgers Engineers in Action Co-President, Ula Sokolowski devised a practical solution: mixing gravel, sand, and cement without water, then combining it with the wetter batch to achieve the correct ratio. Reflecting on the experience, Ula noted, "Much of engineering happens behind a desk, but being on site and contributing directly to the build was a completely different experience. Learning how to do every part of the process was not only valuable, but genuinely fun."

Aito Sterle, who served as a Quality Control Manager on Rutgers project in the previous year, the project was equally transformative. Aito explained, “The experience completely changed my engineering mindset. Traveling gave me a new perspective on life and exposed me to a whole variety of problems that required creative solutions. As a quality control manager, I was able to dive into the nitty‑gritty of bridge building and really understand the ins and outs of the process. Even though we weren’t part of the initial design, we felt connected to it on site — documenting each step, taking precise measurements, and ensuring everything was engineered to a T. It opened my eyes to how engineering truly works in the real world.”

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The process was a full collaborative effort between students and community members: mixing concrete, sifting sand, moving rocks, and passing buckets of concrete down long human chains. Local masons built walls from stone, while students documented each step and checked measurements to ensure precision. For many community members, the project offered not only a chance to contribute to lasting infrastructure, but also meaningful daily work in a region where jobs are scarce.

The bridge’s completion was celebrated not only by the Rutgers team and local residents, but also by community leaders. At the handover ceremony, MP David Ngcamphalala of Qomintaba emphasized the power of collaboration, stating, “Nothing is impossible when people work together.”

Engineers in Action Program Manager Ana Jovanovic echoed this sentiment, describing the Imphumelelo Footbridge as “a promise of safety, opportunity, and connection. It will save lives, open access to healthcare, and help the next generation reach their classrooms without fear.”

Local leaders also looked ahead to future development. Bucopho of Sigwe expressed gratitude to the Microprojects Programme and appealed for continued support, noting that the dedication of Members of Parliament, Indvuna Yenkhundla, and community leaders gave him confidence that more projects would follow in Qomintaba and Matsanjeni South.

These reflections, reported in the Africa-Press – Eswatini, highlight how the Imphumelelo Footbridge was not only a technical achievement but also a symbol of partnership, resilience, and hope for the communities it serves.

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Life with the Community

Beyond construction, the Rutgers Engineers in Action team immersed themselves in local life. Prior to travel, students studied language and cultural traditions with the help of a Cultural Relationships Manager, preparing them to build genuine connections. Once in Eswatini, those connections flourished. Community members welcomed the students warmly, eager to share experiences and perspectives.

Every Saturday, soccer matches and games brought students and residents together. Music often filled the downtime at the construction site, with dance becoming a universal language that bridged cultural and linguistic gaps. Families opened their homes to the volunteers, with one household affectionately adopting the students for the duration of their stay.

For Rutgers students, these relationships were as impactful as the bridge itself. The project was not only about engineering a structure, but also about building trust, friendship, and mutual respect across cultures.

How You Can Help Support Engineers in Action Chapter at Rutgers

Engineers in Action began in 2009 as an international nonprofit dedicated to connecting isolated communities to essential resources through sustainable infrastructure projects. Originally linked with the Bridges to Prosperity program, Engineers in Action has expanded its mission to include not only footbridges, but also water and sanitation systems that empower underserved communities. Student chapters across the United States and Canada have played a vital role in advancing this mission, gaining hands-on engineering experience while helping communities overcome barriers to education, healthcare, and economic opportunity.

To continue building bridges and expanding access to vital resources, Engineers in Action relies on donations. Contributions directly fund materials, logistics, and training that make future projects possible. Supporting Engineers in Action means helping students like those from Rutgers bring their skills to communities in need, while ensuring that families around the world can safely reach schools, hospitals, and markets. For more information check out the chapters Linktree. Readers who wish to make a difference are encouraged to consider donating to the Rutgers Engineers in Action Chapter at their year end campaign or their main donation page and become part of the effort to bridge divides and expand opportunity.

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Princeton Mercer Regional Chamber hosted its Legacy of Leadership Awards Dinner at the historic and elegant TPC Jasna Polana in Princeton, New Jersey. This annual tradition celebrates the accomplishments of Chamber members and shines a spotlight on leaders who make a lasting impact on the business community.

The evening featured four prestigious awards: Business Leader of the Year, Community Leader of the Year, Entrepreneur of the Year, and Innovator of the Year. We are proud to announce that Princeton Hydro was selected as the recipient of the 2025 Innovator of the Year Award.

Pictured below from left to right - Mike Coyle of PESG and Chamber Board of Directors with Princeton Hydro President Geoffrey M. Goll, PE and Vice President Mark Gallagher:

The Legacy Awards dinner also recognized an incredible lineup of honorees whose leadership and vision shape the Princeton Mercer business community and beyond:

Business Leader of the Year: Lisa Breza of Robert Wood Johnson University Hospital Hamilton
Community Leader of the Year: Studio Hillier of Princeton, NJ
Entrepreneur of the Year: Antonia James of K's Event Decorations & Rentals
Lifetime Achievement Award: Carol Beske of ACT Engineers for her decades-long career and community leadership

Princeton Hydro President Geoffrey M. Goll, PE accepted the award on behalf of the firm, accompanied by members of the firm's leadership: Mark Gallagher, Vice President; Megan Hunter Ruf, Chief Operating Officer; and Dana Patterson Grear, Director of Marketing and Communications.

During his acceptance remarks, Geoff reflected on what innovation truly means: the courage to challenge the status quo, the curiosity to explore new ideas, and the collaboration needed to turn those ideas into impact. He emphasized that innovation at Princeton Hydro goes beyond technology—it’s about reimagining how we interact with nature and creating solutions that balance ecological integrity with human needs. From combating toxic algal blooms and restoring urban waterways to pioneering green infrastructure and building climate resilience, innovation drives everything we do.

Geoff also highlighted the importance of community engagement, noting that Princeton Hydro’s commitment extends beyond project sites. Whether supporting environmental education, partnering with nonprofits, or working with underserved communities to ensure access to clean water and green spaces, the company believes innovation is most powerful when it’s inclusive and community-driven.

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Princeton Hydro was also honored to sponsor the event, which brought together business leaders from across the region. Guests enjoyed an evening of networking, fine dining, and recognition of outstanding achievements. The Legacy of Leadership Awards Dinner highlights the Chamber’s commitment to fostering growth and collaboration.

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Receiving the "Innovator of the Year" Award is a tremendous honor for our team. At Princeton Hydro, innovation is at the heart of everything we do, from designing sustainable, nature-based solutions to restoring ecosystems and advancing environmental stewardship. This recognition reinforces our mission to create a positive, lasting impact on both people and nature.

We extend our heartfelt thanks to the Princeton Mercer Regional Chamber for this acknowledgment and to all who make this annual celebration possible. We look forward to continuing to innovate and collaborate with our partners and community in the year ahead.

Learn more about the Princeton Mercer Regional Chamber here. To read about one of Princeton Hydro's award-winning projects, click here.

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Friends of Hopewell Valley Open Space (FoHVOS), in partnership with Princeton Hydro, has launched a groundbreaking initiative, “Monitoring Harmful Algal Blooms (HABs) in the Delaware River Watershed Using Drones and Spatial Analysis,” to improve understanding and forecasting of HABs throughout the Delaware River Watershed. Funded by the National Fish and Wildlife Foundation (NFWF), in partnership with the U.S. Fish & Wildlife Service, through the Delaware Watershed Conservation Fund (DWCF), the project leverages drone technology and advanced data modeling to identify environmental conditions that contribute to HAB formation and aims to develop tools and methodologies for early detection and management.

For this innovative research project, FoHVOS, a 501(c)3 and accredited Land Trust located in Hopewell Township, NJ, has teamed with Princeton Hydro. Princeton Hydro conceptualized and designed the initiative and is leading the technical implementation, including field survey design, drone operations, data analysis, and volunteer training.

“The Delaware River is central to Hopewell Valley’s identity. It shapes our way of life, supplies drinking water to 14.2 million people, shelters wildlife like the endangered Atlantic sturgeon, and offers abundant outdoor recreation,” said Jennifer Rogers, Executive Director of FoHVOS. “HABs were once confined to ponds and lakes, but since 2018, they’ve appeared in colder months and spread to streams and rivers. Though land trusts traditionally focus on land, HABs show how land use directly affects water. These blooms often stem from excess nitrogen and phosphorus washed into waterways during storms. Protecting water means restoring land. Our partnership with Princeton Hydro aligns perfectly with our mission. Together, we’re working to better understand and safeguard the Delaware River and its tributaries in both NJ and PA.”

HABs, caused by nuisance growth of cyanobacteria, can have detrimental effects on water quality and are a growing environmental concern nationwide. These blooms deplete oxygen levels, release toxins, and disrupt ecosystems, potentially posing serious risks to drinking water supplies and the health of wildlife, pets, humans, and local economies. Despite advances in environmental monitoring, predicting when and where HABs will occur remains a challenge due to the complex interplay of nutrient loading, temperature, and hydrologic conditions that can lead to rapid bloom proliferation.

To address these challenges, this newly launched initiative integrates drone-based remote sensing, field sampling, and spatial data analysis to collect and interpret detailed environmental data over a two-year period. The study spans multiple monitoring sites along a 73-mile stretch of the Delaware River in New Jersey and Pennsylvania, focusing on near-shore sections and 23 associated waterbodies. The first survey event began in August 2025.

Drones equipped with multispectral imaging systems capture high-resolution spatial data that is then integrated with digital platforms to link remote-sensing with the drone data and on-the-water collected data. The field-based water quality measurements are being collected by a team of trained community volunteers who are using phycocyanin fluorometer meters to measure concentrations of the photosynthetic pigment phycocyanin, which is produced primarily by cyanobacteria. Volunteers enter the data into a customized ArcGIS mobile-friendly survey. These combined datasets will be used to develop and validate predictive algorithms for both planktonic and benthic HABs under varying seasonal and hydrologic conditions.

The following photos depict the RGB (Visual) and corresponding Thermal image from the monitoring flights over Spring Lake in New Jersey:

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“This research project represents a major step forward in how we study and manage harmful algal blooms at the watershed scale,” said Dr. Fred Lubnow, Project Lead and Senior Technical Director of Ecological Services at Princeton Hydro. “By integrating satellite data, drone imagery, and on-the-water sampling, we’re developing predictive tools that will enable us take a proactive approach to mitigate HABs, improve response time, and better support our ecosystem health.”

Project partners include New York City College of Technology – The City University of New York, which donated the drone and is supporting remote sensing and data integration; Trenton Water Works, Mercer County Park Commission, and The College of New Jersey which are providing monitoring sites and contributing volunteers for water quality data collection in New Jersey; Aqua-PA and the Philadelphia Water Department, which are providing monitoring sites and volunteers to collect watershed data in Pennsylvania; the Bucks County Conservation District, which is coordinating volunteer data collection; and Turner Designs, whose advanced phycocyanin sensors are being used to calibrate and validate drone-based monitoring data.

In the photos below, volunteers are being trained by Princeton Hydro staff on how to use phycocyanin fluorometers and Secchi disks to gather water quality data and log their findings.

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This $1M project is funded through a $488,400 NFWF DWCF grant as part of the NFWF’s Research, Monitoring, & Evaluation Grant category and $513,700 in matching funds from project partners. This grant category aims to support high-performing science that is inclusive, adaptive, and innovative, with the potential to transform the Delaware River Watershed’s future through improved conservation, restoration, and public engagement.

Once complete, the project will produce a comprehensive report summarizing methods, analyses, and data-driven recommendations for practical, low-cost HAB monitoring and mitigation strategies that can be replicated across the Delaware River Watershed and beyond. Crucially, the report will identify tributaries and sources contributing to riverine HABs, enabling targeted restoration of the most affected lands and waters. Data collection will continue through Fall 2025, resume in Spring/Summer 2026, and culminate in a final report expected in 2027.

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FoHVOS is a 501(c)3 nonprofit land trust dedicated to conserving the natural resources of the Hopewell Valley region and beyond. Through land preservation, ecological restoration, community engagement, and science-driven initiatives, FoHVOS works to protect and enhance open spaces for future generations. Learn more at www.fohvos.org.

Princeton Hydro is committed to improving our ecosystems, quality of life, and communities for the better. The firm was formed in 1998 with the specific mission of providing integrated ecological and engineering consulting services. Offering expertise in natural resource management, water resources engineering, geotechnical design and investigation, and regulatory compliance, their staff provide a full suite of environmental services throughout the Northeast for the public and private sectors. Project Lead, Dr. Fred Lubnow, is an expert in HAB management and has worked with dozens of lake associations and government agencies to restore lakes, manage watersheds, reduce pollutant loading, address invasive aquatic plants, and mitigate nuisance HABs. To learn more about Princeton Hydro's work to mitigate harmful algal blooms, go here.

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Duke Farms, a Center of the Doris Duke Foundation, is a 2,700-acre landscape in Hillsborough, NJ, dedicated to restoring ecosystems, demonstrating sustainable land management, and inspiring environmental leadership. Once the privately-owned estate of J.B. and Doris Duke, the property now welcomes more than 150,000 visitors annually who come to experience its diverse habitats, miles of public trails, and innovative conservation programs.

Situated within the Raritan River Watershed and bordered by a mosaic of rural and suburban development, Duke Farms functions as a living laboratory for nature-based solutions in complex, fragmented landscapes. Its forests, meadows, waterways, and working lands offer an unparalleled setting to advance climate-positive strategies, including restorative land management and decarbonization initiatives, while maintaining an unwavering commitment to protecting wildlife and enriching biodiversity.

For more than 20 years, Princeton Hydro has partnered with Duke Farms to restore, monitor, and manage its interconnected lakes and ponds. In 2001, we developed a comprehensive Lake Management Plan to address water quality challenges, promote ecological balance, and ensure these systems could support both wildlife and public use. Since then, we have provided ongoing updates to align management strategies with the ecological objectives of the Duke Farms Foundation. Over time, the Foundation has expanded public access for education and recreation, highlighting the distinctions between shallow, artificial impoundments and natural lakes while implementing innovative, nature-based techniques for algae and aquatic plant control. Today, Duke Farms’ 11 lakes and ponds, eight of which were included in the original plan, remain central to the property’s water resources and continue to play a vital role in overall ecological health, stewardship programming, and public recreation opportunities.

Great Falls Cove at Duke Farms. Photo by Princeton Hydro Aquatic Ecologist Katie Walston-Frederick.

Evolving Strategies for an Evolving Landscape

The original Lake Management Plan integrated routine water quality monitoring, hydrologic and pollutant-load modeling, adaptive aquatic plant management, and targeted interventions to restore ecological balance. Key components included invasive species control, such as Common Carp removal to support native fish populations, and a comprehensive algae and aquatic plant program that included aeration and aquascaping. This multifaceted approach established the foundation for long-term recovery across the lake system.

As Duke Farms expanded public access and strengthened its educational mission, management strategies evolved to emphasize innovative, low-impact techniques for shallow, human-made impoundments. Recent advancements implemented by Princeton Hydro include:

Floating wetland islands to create habitat, improve aesthetics, and reduce nutrient loads through plant and microbial uptake.
Conversion of shallow pond margins to emergent wetlands by manipulating water levels to limit nuisance algal growth.
Design and maintenance of 11 submerged aeration systems, nine powered by solar energy in off-grid locations.

[caption id="attachment_18917" align="aligncenter" width="1227"]

The photo above shows the aeration system actively circulating water in Otter Lake.[/caption]

The most recent plan update incorporates techniques that were unavailable when the original plan was developed:

Duckweed skimming, a mechanical method that creates controlled currents to collect floating vegetation, opening surface water, and improving aesthetics without chemical treatments.
Biochar has been installed in various locations to reduce nutrient concentrations. For example, at Mermaid Pool, which is a key connector between the Reservoir and adjacent waterbodies, biochar trials show promising results in improving clarity and reducing nutrients.

[gallery columns="2" link="none" size="medium" ids="18916,18911"] These initiatives reinforce Duke Farms’ commitment to piloting forward-looking, sustainable ecosystem management practices that can guide stewardship of water resources across the region and beyond.

Hydrology Study: Reducing Pumping, Improving Water Quality

In 2012, Princeton Hydro conducted a detailed hydrologic analysis of Duke Farms’ interconnected lake system to evaluate water management strategies. Historically, water from the Raritan River was pumped into the lakes to maintain water levels. While reliable, this practice introduced elevated nutrients and sediments in the property’s lakes and ponds, degrading water quality and fueling nuisance algal blooms.

The study synthesized pump and discharge records, long-term climate and hydrologic data, and monthly water budgets, and included experimental pumping scenarios to assess alternatives. Results were transformative: under normal conditions, supplemental pumping could be reduced by more than 95%, and even during drought, by about 70%, without compromising lake levels. Based on these findings, Duke Farms adopted a low-volume, seasonal pumping strategy and transitioned to a higher-quality groundwater source, which significantly reduced nutrient loading, improved water clarity, and lowered energy consumption.

[caption id="attachment_18910" align="aligncenter" width="1227"]

The Duke Farms Reservoir[/caption]

Ongoing monitoring remains a cornerstone of the Duke Farms–Princeton Hydro partnership. For each waterbody, the team conducts in-situ data collection, laboratory analyses, visual and observational evaluations, and detailed reporting. Data from continuous monitoring demonstrates sustained improvements in dissolved oxygen, water quality, and overall lake/pond health. This continuous feedback loop informs adaptive management decisions and allows Duke Farms to measure the ecological success of its restoration efforts.

We are proud to partner with Duke Farms in advancing the health and resilience of its water resources, a commitment that not only protects the lakes and ponds on the property but also delivers positive ecological benefits throughout the Raritan River watershed. Click here to learn more about our lake management work in the region. To explore Duke Farms, plan a visit to its beautiful property, sign up for educational programs, or discover ways to get involved in its conservation initiatives, visit Duke Farms’ website.

*All photos used in this blog were captured by Princeton Hydro Aquatic Ecologist Katie Walston-Frederick. [post_title] => Two Decades of Lake Management Innovation at Duke Farms [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => two-decades-of-lake-management-innovation-at-duke-farms [to_ping] => [pinged] => [post_modified] => 2025-12-12 16:52:48 [post_modified_gmt] => 2025-12-12 16:52:48 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=18909 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [5] => WP_Post Object ( [ID] => 18859 [post_author] => 1 [post_date] => 2025-12-10 04:33:09 [post_date_gmt] => 2025-12-10 04:33:09 [post_content] =>

We’re excited to announce Senior Wildlife Biologist and Ecologist Mike McGraw, CSE, QAWB, ACE is a co-author of a newly published study in Agriculture, Ecosystems & Environment, a leading journal in agroecological research. The paper, “Is regenerative agriculture for the birds? Outcomes are practice and species specific,” offers fresh insight into how regenerative farming practices affect the abundance and diversity of bird species across working landscapes in the Northern Great Plains of the US and Canada.

The full paper is available for free via an open-access link until January 13. We encourage everyone interested in wildlife conservation, regenerative agriculture, or avian ecology to take advantage of this limited-time access. Click here to read it now.

What the Study Explores

Regenerative agriculture is often heralded as a win-win for soil health, productivity, and biodiversity, but how exactly do these practices affect bird communities? Birds are highly sensitive to agricultural change, and many North American species have experienced significant declines due to intensification of farming practices. The newly published study takes a closer, science-driven look at whether regenerative approaches can help reverse these trends.

Drawing on extensive point counts, distance sampling, and acoustic recording units across agricultural landscapes, the research team examined nine common regenerative practices, including cover cropping, integrating livestock, eliminating tillage, and enhancing field margins. Rather than assuming a blanket benefit, the study asked a nuanced question: Which birds benefit from which practices, and why?

The findings show that:

Regenerative practices do influence bird density, but the effects are both practice-specific and species-specific.
Some practices, such as maintaining field margins, integrating livestock, and reducing or eliminating tillage, tended to support higher densities of multiple bird species, including several grassland obligates.
Birds responded more strongly to on-farm, field-level practices than to broader land-use patterns across the surrounding landscape.
While regenerative practices can provide important conservation value without removing land from production, they should complement (not replace) grassland preservation and restoration efforts.

This work helps refine what regenerative agriculture can contribute to working-lands conservation and provides actionable, species-specific insights for farmers, land managers, and conservation practitioners.

[caption id="attachment_18865" align="aligncenter" width="1227"]

Pictured above: a patch of common milkweed growing in the margin of a regenerative agricultural field that supported many iconic grassland birds in the breeding season.[/caption] [gallery columns="2" link="none" size="medium" ids="18866,18863"]

About the Journal

Agriculture, Ecosystems & Environment is a leading interdisciplinary journal that publishes high-impact research at the intersection of agroecology, land management, and environmental science. The journal focuses on how agricultural systems function, how they influence the environment, and how environmental change shapes those systems in return. Research featured in this publication is known for being data-rich, hypothesis-driven, and globally relevant.

About the Authors

[caption id="attachment_15635" align="alignright" width="290"]

Mike McGraw, CSE, QAWB, ACE[/caption]

This publication represents a collaborative effort among a team of researchers dedicated to understanding how regenerative agriculture shapes biodiversity in working landscapes. The authors contributed expertise in avian ecology, agricultural management, statistical analysis, and landscape science, bringing a multi-disciplinary lens to this important study.

Mike J. McGraw, CSE, QAWB, ACE, is a Senior Project Manager, Regulatory and Wildlife and Senior Wildlife Biologist and Ecologist, Regulatory and Wildlife with Princeton Hydro. He has over 20 years of experience designing and conducting ecological assessments and wildlife surveys across the United States and Canada. His work spans compliance-based assessments, regenerative agriculture research, long-term ecological monitoring, and conservation-focused outreach. Mike also teaches Avifaunal Ecology in the MES program at the University of Pennsylvania and serves on several municipal and land trust committees.

In addition to Mike, the paper was co-authored by the following contributors:

John E. Quinn of Furman University (Lead Author)
Bryce DelaCourt of Clemson University
Ry Thompson of Resource Environmental Solutions
Steven T. Rosenzweig and James O. Eckberg of General Mills
Jonathan G. Lundgren of Ecdysis Foundation

This publication reflects years of fieldwork, analysis, and collaboration—an accomplishment the entire Princeton Hydro team is proud to celebrate. Though Mike’s work has been published previously, this marks the first time his work appears in print under the Princeton Hydro affiliation, making it a particularly meaningful milestone for all of us.

Join Mike at the “Roots So Deep” Screening & Discussion

In addition to his peer-reviewed work, Mike’s contributions to regenerative agriculture research are featured in “Roots So Deep,” a four-part documentary series about inventive farmers and maverick scientists working to solve climate change with hooves, heart, and soil.

Mike appears throughout the series, including Parts 1 & 4 which will be shown at the Newtown Theatre in Newtown, Pennsylvania, during a special Screening & Discussion event taking place on January 21 at 7pm. Following the film, Mike will join the post-screening panel to take part in the audience Q&A.

Click here for more information and to purchase tickets.

Don’t miss your chance to access Mike's full article for free through January 13. Explore the study and discover the latest insights into bird conservation and the role of regenerative agriculture. Click here to dive in.

[gallery columns="2" link="none" size="medium" ids="18867,18868"] *Photos provided by Mike McGraw, CSE, QAWB, ACE. [post_title] => Princeton Hydro Wildlife Biologist Mike McGraw Publishes New Research on Regenerative Agriculture and Bird Conservation [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => princeton-hydro-wildlife-biologist-mike-mcgraw-publishes-new-research-on-regenerative-agriculture-and-bird-conservation [to_ping] => [pinged] => [post_modified] => 2025-12-10 19:01:39 [post_modified_gmt] => 2025-12-10 19:01:39 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=18859 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [6] => WP_Post Object ( [ID] => 18851 [post_author] => 1 [post_date] => 2025-12-09 14:26:07 [post_date_gmt] => 2025-12-09 14:26:07 [post_content] =>

The New Jersey Highlands Coalition has launched an exciting collaboration with Healthy Home Network TV (HHNTV), an online TV and streaming news platform that produces accessible, community-focused programming. This partnership creates a new space for environmental advocates, municipalities, researchers, and residents to share information about protecting the Highlands watershed and advancing sustainable land use across New Jersey.

By working with HHNTV, the New Jersey Highlands Coalition (the Coalition) can reach new audiences, inspire collective action, and deepen public understanding of the region’s vital role in New Jersey’s environmental health.

Explore the Channel

HHNTV is a growing streaming platform with channels dedicated to environmental issues, clean water, public health, real estate, and community leadership. Through interviews, news programs, and expert conversations, it breaks down complex topics and offers practical information viewers can use to support their communities. The partnership between the Coalition and HHNTV builds on these strengths by providing a trusted source of insight for residents, officials, and advocates who want to stay informed and engaged in environmental stewardship.

The Coalition’s HHNTV channel features the “Your Water, Your Future” New Jersey Enviro Forum series. Episodes examine watershed protection, environmental justice, statewide policy, and other topics that shape the future of the Highlands region.

Recent episodes include:

A History of the Highlands Coalition: An overview of the organization’s origins, impact, and continued work to protect the region’s forests, streams, and water resources.
Superfund Sites in New Jersey: A look at legacy contamination across the state and how communities can advocate for safe cleanup.
Politics and Clean Water in New Jersey: A discussion on policy, advocacy, and the political forces that influence the state’s drinking water future.

The Highlands region supplies drinking water to more than two-thirds of New Jersey’s residents and contains some of the state’s most ecologically important forests, wetlands, and headwaters. Yet increasing pressures from development, aging infrastructure, climate change, and fragmented policies underscore the need for strong, sustained public engagement.

This new collaboration with HHNTV helps to address that need by expanding the Coalition’s reach and impact. Through accessible, story-driven programming, the platform brings environmental issues to wider audiences, deepens public understanding of the region’s most urgent threats, and elevates the work of municipalities and grassroots groups striving to protect local resources. It also strengthens advocacy for water resources and natural spaces, while fostering a statewide network of viewers, partners, and community leaders committed to environmental protection.

This expanded visibility and community connection create lasting support for conservation projects, educational efforts, and policy initiatives that protect both people and wildlife.

Get Involved

There are many ways to engage with the Coalition’s work on HHNTV. Viewers can watch episodes, share them with others, and use the platform as an educational tool within their communities. Municipalities, community groups, and partner organizations are also encouraged to take a more active role by placing the HHNTV widget on their websites, scheduling guest appearances to share local stories, or embedding the Coalition’s channel. Those who choose to create their own affiliate channel receive a 25 percent discount along with HHNTV Verified or Select Channel Owner recognition and year-long syndication.

Together, these opportunities help expand visibility for conservation work across the region and keep residents informed throughout the year.

For more than a decade, Princeton Hydro has partnered with the Coalition to help advance the protection of the New Jersey Highlands region and safeguard its water resources and diverse ecosystems. The Coalition remains a leading voice for clean water and sustainable land use, and we’re proud to support their mission and spotlight their exciting collaboration with HHNTV. Click here to explore the Highlands Coalition’s HHNTV channel, view episodes, and get involved.

The Coalition selected Princeton Hydro President Geoffrey M. Goll, PE, as a 2025 “Lifetime Achievement Award” recipient, a prestigious honor that recognizes individuals who have dedicated their careers to protecting and enhancing New Jersey’s environmental, cultural, and natural resources, with a particular focus on the Highlands region. Read more.

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The Lower Darby Creek Area encompasses a unique blend of residential neighborhoods, commercial zones, and critical regional infrastructure, including the Philadelphia International Airport, Interstate 95, and portions of the John Heinz National Wildlife Refuge. Despite its urban setting, the area supports diverse wetlands, waterways, and wildlife habitats that play an essential role in regional flood protection, resiliency, and ecological connectivity.

Flooding and habitat loss have long challenged the Lower Darby Creek Area, particularly in the communities of Eastwick in southwest Philadelphia and Tinicum Township of Delaware County, PA. Residents in these neighborhoods experience extreme flooding during storm and high tide events, and community groups have been leading local efforts to enhance resilience and reduce flood risk. The increasing effects of climate change, such as more intense storms, sea level rise, and frequent tidal flooding, are compounding challenges.

To help address these challenges, The Nature Conservancy in Pennsylvania (TNC) and the John Heinz National Wildlife Refuge have commissioned Princeton Hydro to lead a two-year Urban Flood and Habitat Resilience Feasibility Study for the Lower Darby Creek Area. The study aims to identify and evaluate nature-based solutions that would help to convey, store, and infiltrate water to alleviate flooding, improve habitat for local wildlife species, and enhance community resilience.

For this feasibility study, Princeton Hydro is combining field data collection, hydrologic and hydraulic modeling, and alternatives analysis to determine the most effective nature-based solutions that benefit both nature and people. These may include wetland creation or enhancement, stream and floodplain reconnection, and stormwater management retrofits designed to restore natural hydrologic function.

Community engagement is a cornerstone of the Feasibility Study, ensuring that local voices help shape the region’s path toward long-term resilience. The project work began with a series of community meetings to learn from residents about the impacts of flooding and the changes they want to see in their neighborhoods. The outcome of this project will be a list of 6-10 nature-based solutions that have been prioritized by community members and that have been analyzed for feasibility and potential for flood reduction and ecological benefit. This information will be presented in a Project Roadmap for the co-developed pathway to achieve community and ecological resilience through project implementation. This guidance will empower partners and communities to secure funding, implement pilot projects, and advance long-term resilience goals.

Once the study is complete, Princeton Hydro will create an interactive ArcGIS StoryMap webpage that will allow users to take a deeper dive into the study's findings and interact with the data. Users will be able to visualize flood scenarios and potential restoration opportunities and learn more about specific project activities and the proposed solutions.

Community Engagement in Action: Eastwick Community Day

Earlier this year, project partners joined residents for Eastwick Community Day, a vibrant event celebrating neighborhood connections, local leadership, and climate resilience. Hosted by the City of Philadelphia’s Office of Sustainability, the event was supported by representatives from The Nature Conservancy in Pennsylvania, John Heinz National Wildlife Refuge, and Princeton Hydro, including Director of Restoration & Resilience Christiana Pollack, CERP, CFM, GISP and Director of Aquatics Mike Hartshorne.

The gathering offered residents an opportunity to meet the organizations involved in the flood study, learn about available climate resilience resources, and share their own experiences and priorities. Alongside informational displays and project updates, attendees enjoyed a picnic lunch, family activities, and hands-on learning about nature-based solutions. It was a day that captured the spirit of collaboration driving this initiative.

Check out some highlights from the day, captured by Kim Hachadoorian, Stream Stewards Project Manager for The Nature Conservancy:

[gallery columns="2" link="none" ids="17637,17638,17631,17635"]

Building on the Eastwick Flood Resilience Study

The Lower Darby Creek initiative builds on Princeton Hydro’s earlier Eastwick Flood Resilience Study, expanding from a neighborhood-focused analysis to a watershed-scale approach. In 2016, in partnership with the University of Pennsylvania, the John Heinz National Wildlife Refuge, Keystone Conservation Trust, Audubon Pennsylvania, and the William Penn Foundation, Princeton Hydro conducted an analysis of Eastwick, the flood impacts created by the Lower Darby Creek, and the viability of several potential flood mitigation strategies. The study sought to answer questions commonly asked by community members related to flooding conditions, with the main question being: What impact does the landfill have on area flooding? Princeton Hydro developed a 2-D hydrologic and hydraulic model to understand how varying restoration techniques, including removal of the Clearview Landfill, expansion of the existing tidal freshwater wetland, removal of bridge infrastructure, and rerouting storm flows, would alter flooding in the Eastwick neighborhood.

Findings from that study provided key data and analytical frameworks that now inform the Lower Darby Creek Area Feasibility Study. Expanding beyond the boundaries of Eastwick, the comprehensive Lower Darby Creek Area study takes a watershed-scale view, exploring how interconnected systems, including upstream hydrology, tidal influences, and habitat networks, can be managed holistically.

[caption id="attachment_7896" align="aligncenter" width="751"]

Princeton Hydro developed a 2-dimensional hydrologic and hydraulic model to understand how varying restoration techniques would alter flooding in the Eastwick neighborhood.[/caption]

Partnerships for a Resilient Future

Resilience is not achieved in isolation; it thrives through collaboration. The success of the Lower Darby Creek Area Feasibility Study and related restoration projects depends on a network of partners committed to shared goals. By aligning expertise, resources, and local knowledge, these partnerships create a foundation for long-term climate adaptation and ecological health. To learn more about the Nature Conservancy in Pennsylvania, click here. To learn more about the City of Philadelphia Office of Sustainability Flood Resilience Strategy for Eastwick, go here. And, click here to learn more about the John Heinz National Wildlife Refuge in Tinicum.

Princeton Hydro is also collaborating with the Refuge to restore the Refuge’s Turkey Foot area. Working with Enviroscapes and Merestone Consultants, our team designed and implemented habitat enhancement and hydrologic restoration projects to improve water quality, restore native wetland vegetation, and expand habitat for fish and wildlife. If you’re interested in learning more about this project, check out our blog: Ecological Restoration in John Heinz National Wildlife Refuge.

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As winter settles in, the Princeton Hydro team is staying active and connected. We’re sharing expertise at conferences, leading educational programs, and joining events that champion sustainability and community engagement. In this Winter Events Spotlight, we highlight the exciting opportunities ahead and how you can be part of them.

December 4: Princeton Mercer Regional Chamber - Awards Dinner

The Princeton Mercer Regional Chamber will host its Legacy of Leadership Awards Dinner on Thursday, December 4 at TPC Jasna Polana, a historic and elegant golf club in Princeton, New Jersey. This annual tradition will celebrate the accomplishments of Chamber members and spotlight leaders who make a lasting impact on the business community. During the evening, four prestigious awards will be presented: Business Leader of the Year, Community Leader of the Year, Entrepreneur of the Year, and Innovator of the Year. Princeton Hydro is proud to sponsor this event and will be honored as the recipient of the Innovator of the Year award. Our team looks forward to attending and is deeply grateful for this recognition.

Get more info and register.

December 11: The Jersey Water Works Annual Conference

Hundreds of leaders, practitioners, and stakeholders committed to strengthening New Jersey’s water systems will come together at the College of New Jersey for the Jersey Water Works' (JWW) Annual Conference. With the theme “Our Commitment to Future Generations,” the program features an expanded lineup of 12+ interactive sessions, offering fresh perspectives on water infrastructure, stormwater management, and solutions for a sustainable and equitable water future. Attendees can expect a dynamic mix of committee-led discussions in the morning and collaborative workshops in the afternoon, plus opportunities to earn valuable Continuing Education Units. Dana Patterson Grear, Director of Marketing and Communications for Princeton Hydro and JWW Stormwater Utilities Subcommittee Co-Chair, is facilitating a panel on "Building Holistic Pathways for Resilient Municipal Stormwater Management." The conference serves as a hub for exchanging ideas, building partnerships, and driving collective action toward a healthier water future for all. We hope to see you there!

Get more info and register.

December 16: SAME New Jersey Post

Princeton Hydro is proud to sponsor the SAME New Jersey Post Annual Holiday Luncheon being held on Tuesday, December 16th, from 12:00 - 2:00 PM at Harvest Moon Brewery & Café in New Brunswick, NJ. This festive gathering will celebrate the holiday season and commemorate the NJ Post’s 50th Anniversary. Enjoy a delicious lunch, network, and learn about upcoming events. The luncheon will also recognize outstanding contributions for 2025 with awards in the following categories: Young Professional Member, Sustaining Member Firm, BG Patrick McCarthy Service Award, and Notable Achievement Award; Princeton Hydro President Geoff Goll, PE has been selected as one of this year's award recipients. The Princeton Hydro team and our Director of Marketing and Communications Dana Patterson Greer, who serves as the NJ Post’s First Vice President, hopes to see you there!

Get more info and register.

January 6 - 8: Northeast Aquatic Plant Management Society (NEAPMS) Annual Meeting

NEAPMS will host its 27th Annual Meeting at the Mystic Marriott Hotel and Spa in Groton, Connecticut. The conference opens with a Tuesday afternoon workshop followed by an evening welcome reception. Wednesday features a full day of technical presentations focused on the active management of aquatic plants and algae, along with a poster session and evening banquet. The event concludes on Thursday with additional technical talks in the morning and a luncheon ending at 1:00 p.m.

As part of the Invasive Aquatic Plant Management section of the conference program, Princeton Hydro Aquatic Ecologist Jesse Smith is leading a workshop on “Exploring Observations and Results of Nine Years of Brittle Naiad (Najas minor) Management in Sleepy Hollow Lake, New York.” Brittle naiad (Najas minor) is an invasive macrophyte found in the Northeast that has received little attention in the literature in regards to control and management, despite its widespread presence within its invasive range. The plant is a priority target species for management efforts in Sleepy Hollow Lake, NY due to its nuisance growth throughout the waterbody and impacts on recreation. Jesse’s presentation will explore management strategies and methods of measuring long-term management success.

Get more info and register.

January 21: “Roots So Deep” Film Screening and Panel Discussion

A special screening of Roots So Deep will take place at the Newtown Theatre at 7:00 p.m. The four-part documentary series follows inventive farmers and pioneering scientists who are charting a path to addressing climate change through hooves, heart, and soil. This event will feature parts one and four and is co-hosted with Bowman’s Hill Wildflower Preserve. The film investigates a central question: can a little-used grazing approach that mimics historic bison movement help lift farmers out of debt, restore depleted soils, rebuild wildlife habitat, and draw down significant amounts of carbon?

The documentary features Princeton Hydro’s Senior Wildlife Biologist, Mike McGraw, CSE, QAWB, and ACE. He is part of a multidisciplinary team of scientists whose research forms the basis of the documentary. Mike’s studies have focused on observing the dynamics of breeding bird populations in paddocks using adaptive multi-paddock (AMP) grazing and those continuously grazed. The documentary highlights that when managed effectively, farmland can boost productivity and profitability for farmers while simultaneously contributing positively to the environment and the diverse wildlife that shares the planet with humans.

Following the screening, a panel of experts from Bowman’s Hill Wildflower Preserve, Princeton Hydro, and the Native Plants Healthy Planet Podcast will discuss the film and answer audience questions.

Get more info and purchase tickets.

January 26 - 27: Lake Champlain Research Conference 2026

Lake Champlain Sea Grant, in partnership with the University of Vermont’s Water Resources Institute, the Lake Champlain Basin Program/NEIWPCC, and the Lake Champlain Research Consortium, will host the Lake Champlain Research Conference at the University of Vermont’s Davis Center in Burlington, VT. This year’s theme, "Research to Action," will feature representation and research from New York, Vermont, Québec, and beyond, providing an opportunity for discussion, networking, and collaboration across Lake Champlain’s multi-jurisdictional watershed. Princeton Hydro's Senior Technical Director of Ecological Services, Dr. Fred Lubnow, will present on “The Monitoring and Management of Cyanobacteria HABs in Shallow, Nearshore Ecosystems such as Missisquoi Bay.” Registration will be open until December 18th at 4 pm.

Get more info and register.

January 27 - 28: Delaware Wetlands Conference

The Delaware Wetlands Conference brings together hundreds of environmental professionals, scientists, practitioners, and community partners at the Chase Center on the Riverfront in Wilmington. In previous years, the event has drawn more than 425 attendees, featured 75 presentations and poster displays, and hosted 45 exhibitor and sponsor tables. This two-day gathering offers a robust mix of workshops, poster sessions, networking events, lunch-and-learn opportunities, an exhibitor hall, and plenary sessions, with professional credits available for participants. The agenda spans a wide range of timely and technical topics, including soil science, climate adaptation, assessment and monitoring, and wetland restoration and creation.

Princeton Hydro is sponsoring the event, exhibiting, and leading two workshops:

Environmental Scientist Ivy Rose, PWS is presenting “Third River Urban Park and Habitat Creation Project - Brownfield Turned Wetland Sanctuary”
Director of Restoration and Resilience Christiana Pollack, CERP, CFM, GISP is presenting “Urban Flood and Habitat Resilience in the Lower Darby Creek Watershed”

Don’t miss this premier forum for advancing wetland research, policy, and practice in the region.

Get more info and register.

February 25 - 26: Pennsylvania Lake Management Society (PALMS) Annual Conference

PALMS will host its 36th Annual Conference at the Wyndham Garden State College. Attendees will have the opportunity to engage in a diverse lineup of professional presentations, workshops, and panel discussions highlighting the latest findings and innovative approaches related to invasive species, monitoring strategies, best management practices, pollutants, and harmful algal blooms. The conference offers a valuable forum for lake managers, researchers, consultants, and environmental professionals to exchange knowledge and advance effective lake and watershed stewardship across Pennsylvania. Princeton Hydro is sponsoring the event, two of our team members are leading workshops, and our Senior Technical Director of Ecological Services, Dr. Fred Lubnow is participating in an "Ask the Experts" panel. A complete agenda and more conference details will be available in the New Year.

Registration link coming soon. Stay tuned.

February 26 - 27: New Jersey Watershed Conference

The Watershed Institute's 9th Annual New Jersey Watershed Conference, titled All Hands on Deck: Multidisciplinary Approaches for Watershed Resilience, will be held on Friday, February 27, from 10:45 a.m. to 12:00 p.m. in person at The College of New Jersey, with a virtual participation option available via Zoom. This statewide gathering brings together state, county, and municipal officials, nonprofit organizations, and environmental professionals for sessions designed to expand knowledge, build practical skills, spark dialogue among stakeholders, and promote collaboration on emerging watershed issues and solutions. Hosted by The Watershed Institute, the conference provides a dynamic forum for advancing resilient, science-based watershed management across New Jersey.

Princeton Hydro is a proud sponsor of the conference. We will have an exhibitor booth and members of our team are leading a workshop: Senior Project Manager of Engineering Services Sean Walsh, PE and Landscape Architect Jamie Feinstein, RLA are presenting with Lambertville Mayor Andrew Nowick on “Green or Gray? Stormwater Solutions in Constrained Watersheds.” Their session is eligible for CFM and PE CEUs.

Get more info and register.

March 28: 2026 Watershed Congress

Presented by the Delaware Riverkeeper Network, the 2026 Watershed Congress takes place in-person at Alvernia University in Reading, PA from 8:30am through 3:30pm. The Watershed Congress has evolved since 1998 to advance the best available information and techniques for protecting and restoring watersheds. The focus on networking across disciplines means that the Watershed Congress melds science, policy, and practical applications into one program. As a result, the annual Watershed Congress is a highly anticipated event for people interested in understanding, protecting, and restoring their local streams. Princeton Hydro is a proud event sponsor, and Environmental Scientist Ivy Rose, PWS, is leading a breakout session about the Bloomfield Third River Floodplain Wetland Enhancement Project.

More info and registration details coming soon.

As we move into the new year, additional events will be announced, and this blog will be updated accordingly. Stay tuned for more details and upcoming opportunities.

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Princeton Hydro was proud to participate in the New Jersey Association for Floodplain Management (NJAFM) 20th Annual Conference and Exhibition, held this fall in Atlantic City, NJ. Celebrating two decades of collaboration and innovation within the floodplain management community, the conference brought together more than 500 practitioners, researchers, agency staff, and industry leaders from across the Northeast.

As the region’s premier floodplain management event, the NJAFM conference serves as a hub for sharing cutting-edge tools, best practices, and real-world strategies that help communities reduce flood risk, adapt to changing climate conditions, and build long-term resilience. Over the course of two days, participants attended educational sessions, hands-on training, and networking events centered on the theme: “NJAFM at 20 Years: Celebrate the Past, Focus on the Future.”

Princeton Hydro was excited to return as a conference sponsor, exhibitor, and session presenter.

Understanding the Role of Floodplain Management

Floodplain management is a multidisciplinary practice that integrates planning, engineering, ecological science, and public policy to reduce flood risk while preserving the natural functions of riverine and coastal systems. At its core, it involves understanding how water moves across a landscape, identifying areas vulnerable to flooding, and implementing measures that protect people, infrastructure, and ecosystems.

Floodplains provide a range of essential functions. Hydrologically, they convey, store, and infiltrate water during storm events, supporting natural flood attenuation, erosion control, and groundwater recharge. Ecologically, they contribute to biodiversity by providing habitat, migration corridors, and spawning areas for fish and wildlife. From a community perspective, well-managed floodplains can offer recreational value, improve water quality, and enhance the aesthetic and economic vitality of local neighborhoods.

Modern floodplain management relies on both structural and non-structural approaches. Structural measures may include engineered solutions such as levees, floodwalls, culvert improvements, or stormwater system upgrades. Non-structural tools often involve land-use planning, flood-resilient building standards, conservation of open space, and community engagement programs that help residents understand risk and adopt best practices.

Princeton Hydro works with municipalities, state agencies, nonprofit organizations, and watershed groups to develop and implement comprehensive floodplain management strategies across the region, emphasizing strategies that balance flood risk reduction with ecological enhancement, ensuring that floodplain management supports both resilient communities and healthy, functioning watersheds.

[gallery link="none" columns="2" size="large" ids="18742,18741"]

Pictured above: before and after photos from the Floodplain Restoration and Urban Wetland Creation project in Bloomfield Township, New Jersey. By removing a little over four acres of upland historic fill in this densely developed area and converting it into 4.2 acres of a functioning floodplain wetland, the project restored valuable ecological functions, enhances wetland and riparian zone habitat, and increases flood storage capacity for urban stormwater runoff.

Technical Sessions Led by Princeton Hydro

Our team led two workshops at the NJAFM 20th Annual Conference:

Urban Flood and Habitat Resilience in the Lower Darby Creek Watershed

Christiana Pollack, CERP, CFM, GISP, Princeton Hydro’s Director of Restoration and Resilience, presented on strategies to address chronic flooding and climate-driven impacts in Eastwick and Tinicum Township, Philadelphia. Her talk highlighted a two-year technical assessment commissioned by The Nature Conservancy in Pennsylvania and the John Heinz National Wildlife Refuge, and led by Princeton Hydro. The project combines integrated field data collection, advanced hydrologic and hydraulic modeling, and rigorous alternatives analysis to evaluate nature-based solutions. These include wetland creation or enhancement, stream and floodplain reconnection, and stormwater management retrofits, with the ultimate goal of restoring natural hydrologic function, reducing flood risk, and strengthening habitat and community resilience. Read more about the project here.

Are You Hesitant to Pursue a Stormwater Utility?

Elizabeth Treadway of WSP USA and Dr. Clay Emerson, PhD, PE, CFM, Senior Technical Director of Engineering at Princeton Hydro, led a session on the practical, legal, and financial considerations of establishing a stormwater utility, an increasingly vital tool for sustainable infrastructure funding. Participants learned:

The purpose and function of a stormwater utility
How to determine if it’s the right fit for a community
Steps municipalities can take to implement one

The session also addressed common challenges such as aging infrastructure, rapid development, and the growing frequency of severe storm events driven by climate change. Stormwater feasibility studies were highlighted as a key resource for evaluating costs and benefits before moving forward.

Managing stormwater effectively is essential for resilient infrastructure and community safety. Click here to learn about a Stormwater Utility Investigation & Feasibility Study we conducted for the Town of Hammonton, New Jersey.

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Throughout the conference, our team was able to connect with planners, municipal officials, engineers, and local leaders at our exhibitor booth. These conversations offered valuable opportunities to discuss project experiences, share resources, and learn from others working to advance resilience across New Jersey.

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Princeton Hydro is proud to be part of this community and remains committed to advancing science-based, equitable, and sustainable approaches to reducing flood risk. We look forward to continuing our partnership with NJAFM and supporting clients and communities in building a safer, more resilient future.

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The Lake Hopatcong Commission, in partnership with Roxbury Township and Princeton Hydro, and with support from the Lake Hopatcong Foundation, has been awarded a $367,000 Water Quality Restoration Grant from the New Jersey Department of Environmental Protection (NJDEP) for the Lake Hopatcong Watershed Basin Enhancement Project.

The project will retrofit an existing stormwater detention basin with a series of green stormwater infrastructure improvements designed to slow, capture, and naturally treat stormwater runoff. The basin project, located between King Road and Mount Arlington Boulevard in Roxbury Township, was identified in the 2021 Upper Musconetcong River Implementation Plan (WIP) as a priority project to reduce non-point source pollution and improve water quality before stormwater enters the lake at King Cove.

"Roxbury is truly thankful for the Lake Hopatcong Commission. Lake Hopatcong is such a valuable resource and the commission’s work alongside Princeton Hydro has preserved a natural treasure," said Shawn Potillo, Mayor of Roxbury. "We are grateful to the NJDEP for their support and award of this grant. This water basin project in Roxbury will help continue the commission’s purpose of keeping the lake a beautiful place to swim, boat, relax, and call home."

A range of improvements will be incorporated including planting native vegetation and managing invasive species to stabilize soils, support wildlife, and naturally filter pollutants before they reach the lake. Erosion and sediment control measures will further protect the area by reducing stormwater scouring and preventing bank degradation.

In addition to on-the-ground restoration, the project emphasizes public education and outreach to promote best management practices and ongoing watershed stewardship among residents and local partners. Project success will be evaluated through water quality monitoring conducted before and after construction, providing measurable data on the project’s effectiveness in improving water quality.

“Lake Hopatcong’s fight against harmful algal blooms requires a united front, where many projects, like retrofitting stormwater basins to capture nutrients before they go into the lake, collectively make a big impact,” said Dr. Fred Lubnow, Senior Technical Director of Ecological Services at Princeton Hydro. “Thanks to the leadership of the Lake Hopatcong Commission and the Lake Hopatcong Foundation, this collaborative approach is driving real progress toward cleaner water, healthier ecosystems, and a more resilient future for New Jersey’s largest lake.”

The basin enhancement project is funded through NJDEP’s Water Quality Restoration Grant Program, which is supported by the U.S. Environmental Protection Agency under Clean Water Act Section 319(h). Along with the state grant, the project includes a $200,000 local match from the Commission, Roxbury Township, and the Lake Hopatcong Foundation, and builds on a $98,000 planning grant awarded by the New Jersey Highlands Council in 2024 that helped prepare the project for implementation and future grant opportunities.

“This project represents an important step forward in improving Lake Hopatcong’s water quality and reducing pollutants that contribute to harmful algal blooms,” said Ron Smith, Chairman of the Lake Hopatcong Commission. “We’re grateful to NJDEP, Roxbury Township, Princeton Hydro, the Foundation and the Highlands Council for their continued partnership in protecting this vital resource.”

[caption id="attachment_18637" align="aligncenter" width="1380"]

Photo by the Lake Hopatcong Commission[/caption]

The Lake Hopatcong Commission is an independent state agency created in, but not of, the New Jersey Department of Environmental Protection. LHC is recognized as a steward of the lake and watershed. The 11-member Board of State and local appointees include representatives of the four municipalities and two counties surrounding Lake Hopatcong. LHC is responsible for fulfilling the obligations of the Lake Hopatcong Protection Act, to safeguard Lake Hopatcong as a natural, scenic, and recreational resource. To learn more, click here to visit lakehopatcongcommission.org.

For over 30 years, Princeton Hydro has been proud to work alongside the Lake Hopatcong Commission and Lake Hopatcong Foundation in support of the lake’s health and resilience. Through these partnerships, and with the support of numerous funding agencies, a wide range of projects have been implemented to reduce pollutant loads, manage stormwater runoff, address invasive species and harmful algal blooms, and enhance habitat quality—helping to protect both the lake and the communities that depend on it. To learn more about our collaborative efforts, click here.

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1. Completed the Full Removal of 2 Dams:

[gallery link="none" size="medium" ids="18228,18220,18224"]

2. Secured $3.2 Million in Grant Funding for our Clients:

3. Launched an Innovative Initiative to Study HABs in the Delaware River Watershed:

4. Earned 7 Prestigious Awards:

5. Constructed 2 Transformative Ecosystem Restoration Projects:

6. Celebrated Numerous Staff Achievements:

7. Partnered with Billion Oyster Project to Study Urban Reef Ecosystems:

[gallery link="none" ids="18263,18265,18268"]

8. Advanced International Collaboration in Aquatic Science and River Restoration:

[gallery link="none" size="medium" ids="17275,17279,18151"]

9. Unveiled 4 New Public Resources:

10. Participated in 50+ Conferences, Workshops, Community Gatherings and Sponsored 30+ Events:

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Posted on December 22, 2025 by Princeton Hydro

1. Completed the Full Removal of 2 Dams:

2. Secured $3.2 Million in Grant Funding for our Clients:

3. Launched an Innovative Initiative to Study HABs in the Delaware River Watershed:

4. Earned 7 Prestigious Awards:

5. Constructed 2 Transformative Ecosystem Restoration Projects:

6. Celebrated Numerous Staff Achievements:

7. Partnered with Billion Oyster Project to Study Urban Reef Ecosystems:

8. Advanced International Collaboration in Aquatic Science and River Restoration:

9. Unveiled 4 New Public Resources:

10. Participated in 50+ Conferences, Workshops, Community Gatherings and Sponsored 30+ Events:

By Mikhail Velez, Communications Coordinator

Strength in Collaboration: Building the Imphumelelo Footbridge

Life with the Community

How You Can Help Support Engineers in Action Chapter at Rutgers

Evolving Strategies for an Evolving Landscape

What the Study Explores

About the Journal

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Join Mike at the “Roots So Deep” Screening & Discussion

Explore the Channel

Get Involved

Community Engagement in Action: Eastwick Community Day

Building on the Eastwick Flood Resilience Study

Partnerships for a Resilient Future

December 4: Princeton Mercer Regional Chamber - Awards Dinner

December 11: The Jersey Water Works Annual Conference

December 16: SAME New Jersey Post

January 6 - 8: Northeast Aquatic Plant Management Society (NEAPMS) Annual Meeting

January 21: “Roots So Deep” Film Screening and Panel Discussion

January 26 - 27: Lake Champlain Research Conference 2026

January 27 - 28: Delaware Wetlands Conference

February 25 - 26: Pennsylvania Lake Management Society (PALMS) Annual Conference

February 26 - 27: New Jersey Watershed Conference

March 28: 2026 Watershed Congress

Understanding the Role of Floodplain Management

Technical Sessions Led by Princeton Hydro

Urban Flood and Habitat Resilience in the Lower Darby Creek Watershed

Are You Hesitant to Pursue a Stormwater Utility?

1. Completed the Full Removal of 2 Dams:

2. Secured $3.2 Million in Grant Funding for our Clients:

3. Launched an Innovative Initiative to Study HABs in the Delaware River Watershed:

4. Earned 7 Prestigious Awards:

5. Constructed 2 Transformative Ecosystem Restoration Projects:

6. Celebrated Numerous Staff Achievements:

7. Partnered with Billion Oyster Project to Study Urban Reef Ecosystems:

8. Advanced International Collaboration in Aquatic Science and River Restoration:

9. Unveiled 4 New Public Resources:

10. Participated in 50+ Conferences, Workshops, Community Gatherings and Sponsored 30+ Events:

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