Dr. Fred Lubnow of Princeton Hydro Featured in Magazine Article on Chautauqua Lake

The U.S. is home to thousands of lakes both natural and manmade. Lakes are incredibly important features in the landscape that provide numerous beneficial services, including domestic water supply, hydro-electric power, agricultural water supply, recreation, and tourism. They also provide essential habitat for fish, wildlife and aquatic organisms.

Lakes are complex and dynamic systems, each situated in a unique landscape context. Maintaining the ecological health of a lake is no easy feat. A lot goes on behind the scenes to maintain water quality and a balanced lake ecosystem. Successful, long-term lake management requires a proactive approach that addresses the causes of its water quality problems rather than simply reacting to weed and algae growth and other symptoms of eutrophication.

Chautauqua Magazine recently published an article about the science behind the management of Chautauqua Lake, which features our Director of Aquatic Programs Dr. Fred Lubnow. We’ve included an excerpt below. Click here to view the full article and photos:

Dr. Fred Lubnow is a scientist and director of aquatic programs at Princeton Hydro, a consulting organization based in Exton, Pennsylvania, that is often called on to support lake and watershed regions that want to develop a long-term plan for lake conservation.

He says that while his firm focuses on the development of data and intelligence to inform decision making in regard to freshwater ecosystems, his work is really about coalition building.

“As a scientist and a consultant, you learn over time that you are building a coalition stakeholders and determining what we can agree on to help everyone in the community,” Lubnow said.

Ten years ago, Princeton Hydro was hired to do some stream and inlet monitoring for various stakeholders at Chautauqua Lake. More recently, they’ve been contracted to conduct third-party monitoring of the impacts of the Spring 2019 herbicide applications in the south basin of Chautauqua Lake…

Continue reading!

 

Princeton Hydro is the industry leader in lake restoration and watershed management. We have conducted diagnostic studies and have developed management and restoration plans for over 300 lakes and watersheds throughout the country. This has included work for public and private recreational lakes, major water supply reservoir, and watershed management initiatives conducted as part of USEPA and/or state funded programs. For more information about our lake management services, go here: http://bit.ly/pondlake. 

BOROUGH OF RINGWOOD INITIATES FIRST-IN-STATE REGIONAL APPROACH TO LAKE MANAGEMENT THROUGH PUBLIC-PRIVATE PARTNERSHIP

NorthJersey.com File Photo
The Borough of Ringwood initiates a unique public-private partnership
with four community lake associations to
holistically manage watershed health related to private lakes

Providing drinking water to millions of New Jersey residents, the Borough of Ringwood is situated in the heart of the New Jersey Highlands and is home to several public and private lakes that sit within the Ramapo Mountains. In order to take an active role in the management of these natural resources within multiple watersheds, the Borough of Ringwood will be the first municipality in the state of New Jersey to take a regional approach to private lake management through a public-private partnership (PPP) with four lake associations.

The four private sets of lakes targeted in the plan— Cupsaw, Erskine, Skyline, and Riconda —were created by the Ringwood Company in the 1920s and 30s to promote the municipality as a hunting and fishing retreat and a summer resort. They currently provide private beach clubs and recreational opportunities for surrounding homeowners who can opt to join as members.

Map Showing the Four Private Lakes in the PPP holistic watershed management plan

Generally, the health of a private lake is funded and managed in isolation by the governing private lake association group. Ringwood Borough Manager Scott Heck’s concept was to design and implement a municipal-wide holistic watershed management plan to use as a tool to identify capital priorities to enhance water quality throughout the community. Mr. Heck hired Princeton Hydro, a leader in ecological and engineering consulting to design this innovative project.

Cupsaw Lake “This regional approach to lake and watershed management is a no-brainer from a scientific, technical, and community point of view. Historically, however, municipal governments and private lake associations have rarely partnered to take such an approach,” said Princeton Hydro’s Senior Project Manager, Christopher Mikolajczyk, who is a Certified Lake Manager and lead designer for this initiative. “We’re thrilled to work with the Borough of Ringwood and the New Jersey Highlands Council to set a precedent for this logical watershed management strategy, which opens the door for future public-private partnerships.”

As part of this project, a Watershed-based Assessment will be completed. The following objectives will be met:

  1. Identification, quantification, and prioritization of watershed-based factors which may cause eutrophication;
  2. Identification of watershed management measures needed to address general causes of water quality impairments;
  3. Identification of the relative cost of the recommended general watershed management measures;
  4. The generation of a schedule, based on priority, for the implementation of the recommended watershed management measures; and
  5. A general assessment report will be authored at the conclusion of the study.

Skyline Lake in the FallFunding for the Watershed-based Assessment for the Lakes of the Borough of Ringwood is being provided by the New Jersey Highlands Council through a grant reimbursement to the Borough of Ringwood. As part of the PPP , the Borough of Ringwood will review and where feasible implement any suggested actions surrounding the lakes. The final report, provided to the Borough by Princeton Hydro, will identify and prioritize watershed management techniques and measures that are best suited for immediate and long-term implementation, as well as provide cost projections for implementation in both the short-term and long-term.

This integrated approach to watershed and lake management is an important preventative measure to improve water quality for millions of people and reduce potential future incidents of aquatic invasive species and harmful algal blooms throughout the region.

For more information about the PPP, check out today’s NorthJersey.com news story. To learn more about Princeton Hydro’s lake and pond management services, go here: http://bit.ly/pondlake.

Managing Urban Stormwater Runoff and Revitalizing Natural Habitat at Harveys Lake

Measuring 630+ acres, Harveys Lake, located in Luzerne County, Pennsylvania, just northeast of Wilkes-Barre, is the largest natural lake (by volume) within the Commonwealth of Pennsylvania, and is one of the most heavily used lakes in the area. It is classified as a high quality – cold water fishery habitat (HQ-CWF) and is designated for protection under the classification.

Since 2002, The Borough of Harveys Lake and the Harveys Lake Environmental Advisory Council  has worked with Princeton Hydro on a variety of lake management efforts focused around maintaining high water quality conditions, strengthening stream banks and shorelines, and managing stormwater runoff.

Successful, sustainable lake management requires identifying and correcting the cause of eutrophication as opposed to simply reacting to the symptoms of eutrophication (algae and weed growth). As such, we collect and analyze data to identify the problem sources and use these scientific findings to develop a customized management plan that includes a combination of biological, mechanical, and source control solutions. Here are some examples of the lake management strategies we’ve utilized for Harveys Lake:

 

Floating Wetland Islands

Floating Wetland Islands (FWIs) are an effective alternative to large, watershed-based natural wetlands. Often described as self-sustaining, FWIs provide numerous ecological benefits. They assimilate and remove excess nutrients, like nitrate and phosphorous, that could fuel algae growth; provide habitat for fish and other aquatic organisms; help mitigate wave and wind erosion impacts; and provide an aesthetic element. FWIs are also highly adaptable and can be sized, configured, and planted to fit the needs of nearly any lake, pond, or reservoir.

Five floating wetland islands were installed in Harveys Lake to assimilate and reduce nutrients already in the lake. The islands were placed in areas with high concentrations of nutrients, placed 50 feet from the shoreline and tethered in place with steel cables and anchored. A 250-square-foot FWI is estimated to remove up to 10 pounds of nutrients per year, which is significant when it comes to algae.

Princeton Hydro worked with the Harveys Lake Environmental Advisory Council and the Borough of Harveys Lake to obtain funding for the FWIs through the Pennsylvania Department of Environmental Protection (PADEP).

 

Streambank & Shoreline Stabilization

Harveys Creek

The shoreline habitat of Harveys Lake is minimal and unusual in that a paved road encompasses the lake along the shore with most of the homes and cottages located across the roadway, opposite the lake. In addition to the lake being located in a highly populated area, the limited shoreline area adds to the challenges created by urban stormwater runoff.

Runoff from urban lands and erosion of streambanks and shorelines delivers nutrients and sediment to Harveys Lake. High nutrient levels in the lake contribute to algal blooms and other water quality issues. In order to address these challenges, the project team implemented a number of small-scale streambank and inlet stabilization projects with big impacts.

The work included the stabilization of the streambank downstream for Harveys Lake dam and along Harveys Creek, the design and installation of a riparian buffer immediately along the lake’s shoreline, and selective dredging to remove sediment build up in critical areas throughout the watershed.

 

Invasive Species Management

Hydrilla (Hydrilla verticillata), an aggressively growing aquatic plant, took root in the lake in 2014 and quickly infected 250 acres of the lake in a matter of three years. If left untreated, hydrilla will grow to the water’s surface and create a thick green mat, which prevents sunlight from reaching native plants, fish and other organisms below. The lack of sunlight chokes out all aquatic life.

In order to prevent hydrilla from spreading any further, Princeton Hydro and SePRO conducted an emergency treatment of the impacted area utilizing the systemic herbicide Sonar® (Fluridone), a clay-based herbicide. SonarOne, manufactured by SePRO, blocks hydrilla’s ability to produce chloroplasts, which in turn halts the photosynthetic process. The low-concentration herbicide does not harm fish, wildlife or people using the lake. Surveys conducted after the treatment showed it was working – the hydrilla had turned white and was dying off. Additional Sonar treatments followed and efforts to eradicate hydrilla in the lake continue.

Dr. Fred Lubnow, our Director of Aquatic Programs, estimates complete eradication of the aquatic plant could take around five years. Everyone can do their part in preventing the spread of this and other invasive species. Boaters and lake users must be vigilant and remove all vegetation from the bottom of watercrafts and trailers.

 

Stormwater Best Management Practices (BMPs)

In 2009, Princeton Hydro developed a stormwater implementation plan (SIP) for Harveys Lake. The goal of the stormwater/watershed-based efforts was to reduce the lake’s existing annual total phosphorus load to be in full compliance with the established Total Maximum Daily Load (TMDL). This TMDL is related to watershed-based pollutant loads from total phosphorus (TP) and total suspended solids (TSS), which can contribute to algal blooms.

A number of structural urban runoff projects were implemented throughout the watershed. This includes the design and construction of two natural stream channel projects restoring 500 linear feet of tributaries and reducing the sediment and nutrient loads entering the lake. A series of 38 urban runoff BMPs, including nutrient separating devices and roadside infiltration, were installed in areas immediately adjacent to the lake to further reduce the loads of nutrients and other pollutants reaching the lake.

The photos below show a stormwater project that was completed in the Hemlock Gardens Section of the Watershed. Hemlock Gardens is a 28-acre section of land located in the southeastern portion of the watershed. It contains approximately 26 homes, has very steep slopes, unpaved dirt roads, and previously had no stormwater infrastructure in place.

Two structural stormwater BMPs were installed:

  • A nutrient separating baffle box, which utilizes a three-chamber basin with screens to collect leaf litter, grass clippings and trash
  • A water polishing unit that provides a platform for secondary runoff treatment

In 1994, Harveys Lake was identified as “impaired” by PADEP due to large algal blooms. In 2014, Harveys Lake was removed from the list of impaired waters. Project partners attribute the recovery of this lake to the stream restoration, urban runoff BMP implementation, and the use of in-lake nutrient reduction strategies.

The Harveys Lake Watershed Protection Plan Implementation Project proved that despite the lake being located in an urbanized watershed, it is possible to implement cost-effective green infrastructure and stormwater retrofit solutions capable of significantly decreasing pollutant loading to the lake.

To learn more about our lake and pond management services or schedule a consultation, visit: http://bit.ly/pondlake.

Four Ways Climate Change Can Affect Your Lake

The Local Effects of Climate Change Observed Through our Community Lakes

Climate change is an enormous concept that can be hard to wrap your head around. It comes in the form of melting ice caps, stronger storms, and more extreme seasonal temperatures (IPCC, 2018). If you’re an avid angler, photographer, swimmer, boater, or nature enthusiast, it’s likely that because of climate change you’ll bear witness to astonishing shifts in nature throughout the greater portion of your lifetime. This is especially true with respect to lakes.

2015-07-07-10-01-20

Lakes are living laboratories through which we can observe the local effects of climate change in our own communities. Lake ecosystems are defined by a combination of various abiotic and biotic factors. Changes in hydrology, water chemistry, biology, or physical properties of a lake can have cascading consequences that may rapidly alter the overall properties of a lake and surrounding ecosystem. Most of the time the results are negative and the impacts severe.

“Managing loads of phosphorous in watersheds is even more important as the East Coast becomes increasingly warmer and wetter thanks to climate change,” said Dr. Fred Lubnow, Director of Aquatics in a recent NJ.com interview. “Climate change will likely need to be dealt with on a national and international scale. But local communities, groups, and individuals can have a real impact in reducing phosphorous levels in local waters.”

Recognizing and monitoring the changes that are taking place locally brings the problems of climate change closer to home, which can help raise awareness and inspire environmentally-minded action.

We put together a list of four inter-related, climate change induced environmental impacts that can affect lakes and lake communities:

1. Higher Temperatures = Shifts in Flora and Fauna Populations

The survival of many lake organisms is dependent on the existence of set temperature ranges and ample oxygen levels. The amount of dissolved oxygen (DO) present in a lake is a result of oxygen diffusion from the atmosphere and its production by algae and aquatic plants via photosynthesis. An inverse relationship exists between water temperature and DO concentrations. Due to the physical properties of water, warmer water holds less DO than cooler water.

This is not good news for many flora and fauna, such as fish that can only survive and reproduce in waters of specific temperatures and DO levels. Lower oxygen levels can reduce their ability to feed, spawn and survive. Populations of cold water fish, such as brown trout and salmon, will be jeopardized by climate change (Kernan, 2015).

358-001-carp-from-churchvilleAlso, consider the effects of changing DO levels on fish that can tolerate these challenging conditions. They will thrive where others struggle, taking advantage of their superior fitness by expanding their area of colonization, increasing population size, and/or becoming a more dominant species in the ecosystem. A big fish in a little pond, you might say. Carp is a common example of a thermo-tolerant fish that can quickly colonize and dominate a lake’s fishery, in the process causing tremendous ecological impact (Kernan, 2010).

2. Less Water Availability = Increased Salinity

Just as fish and other aquatic organisms require specific ranges of temperature and dissolved oxygen to exist, they must also live in waters of specific salinity. Droughts are occurring worldwide in greater frequency and intensity. The lack of rain reduces inflow and higher temperatures promote increased evaporation. Diminishing inflow and dropping lake levels are affecting some lakes by concentrating dissolved minerals and increasing their salinity.

Studies of zooplankton, crustaceans and benthic insects have provided evidence of the consequences of elevated salinity levels on organismal health, reproduction and mortality (Hall and Burns, 2002; Herbst, 2013; Schallenberg et al., 2003). While salinity is not directly related to the fitness or survival rate of all aquatic organisms, an increase in salinity does tend to be stressful for many.

3. Nutrient Concentrations = Increased Frequency of Harmful Algal Blooms

Phosphorus is a major nutrient in determining lake health. Too little phosphorus can restrict biological growth, whereas an excess can promote unbounded proliferation of algae and aquatic plants.

before_strawbridgelake2If lake or pond water becomes anoxic at the sediment-water interface (meaning the water has very low or completely zero DO), phosphorus will be released from the sediment. Also some invasive plant species can actually “pump” phosphorus from the sediments and release this excess into the water column (termed luxurious uptake). This internally released and recycled sedimentary phosphorus can greatly influence lake productivity and increase the frequency, magnitude and duration of algae blooms. Rising water temperatures, declining DO and the proliferation of invasive plants are all outcomes of climate change and can lead to increases in a lake’s phosphorus concentrations and the subsequent growth and development of algae and aquatic plants.

Rising water temperatures significantly facilitate and support the development of cyanobacteria (bluegreen algae) blooms. These blooms are also fueled by increasing internal and external phosphorus loading. At very high densities, cyanobacteria may attain harmful algae bloom (HAB) proportions. Elevated concentrations of cyanotoxins may then be produced, and these compounds seriously impact the health of humans, pets and livestock.

rain-garden-imagePhosphorus loading in our local waterways also comes from nonpoint sources, especially stormwater runoff. Climate change is recognized to increase the frequency and magnitude of storm events. Larger storms intensify the mobilization and transport of pollutants from the watershed’s surrounding lakes, thus leading to an increase in nonpoint source loading. Additionally, larger storms cause erosion and instability of streams, again adding to the influx of more phosphorus to our lakes. Shifts in our regular behaviors with regards to fertilizer usage, gardening practices and community clean-ups, as well as the implementation of green infrastructure stormwater management measures can help decrease storm-related phosphorus loading and lessen the occurrence of HABs.

4. Cumulative Effects = Invasive Species

A lake ecosystem stressed by agents such as disturbance or eutrophication can be even more susceptible to invasive species colonization, a concept coined “invasibility” (Kernan, 2015).

For example, imagine that cold water fish species A has experienced a 50% population decrease as a result of warming water temperatures over ten years. Consequently, the fish’s main prey, species B, has also undergone rapid changes in its population structure. Inversely, it has boomed without its major predator to keep it in check. Following this pattern, the next species level down – species B’s prey, species C – has decreased in population due to intense predation by species B, and so on. Although the ecosystem can potentially achieve equilibrium, it remains in a very unstable and ecologically stressful state for a prolonged period of time. This leads to major changes in the biotic assemblage of the lake and trickle-down changes that affect its recreational use, water quality and aesthetics.

• • •

Although your favorite lake may not experience all or some of these challenges, it is crucial to be aware of the many ways that climate change impacts the Earth. We can’t foresee exactly how much will change, but we can prepare ourselves to adapt to and aid our planet. How to start? Get directly involved in the management of your lake and pond. Decrease nutrient loading and conserve water. Act locally, but think globally. Get out and spread enthusiasm for appreciating and protecting lake ecosystems. Also, check out these tips for improving your lake’s water quality.


References

  1. IPCC. “Summary for Policymakers. “Global Warming of 1.5°C. An IPCC Special Report on the impacts of global warming of 1.5°C above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty.” World Meteorological Organization, Geneva, Switzerland, 32 pp. 2018.
  2. Hall, Catherine J., and Carolyn W. Burns. “Mortality and Growth Responses of Daphnia Carinata to Increases in Temperature and Salinity.” Freshwater Biology 47.3 (2002): 451-58. Wiley. Web. 17 Oct. 2016.
  3. Herbst, David B. “Defining Salinity Limits on the Survival and Growth of Benthic Insects for the Conservation Management of Saline Walker Lake, Nevada, USA.” Journal of Insect Conservation 17.5 (2013): 877-83. 23 Apr. 2013. Web. 17 Oct. 2016.
  4. Kernan, M. “Climate Change and the Impact of Invasive Species on Aquatic Ecosystems.” Aquatic Ecosystem Health & Management (2015): 321-33. Taylor & Francis Online. Web. 17 Oct. 2016.
  5. Kernan, M. R., R. W. Battarbee, and Brian Moss. “Interaction of Climate Change and Eutrophication.” Climate Change Impacts on Freshwater Ecosystems. 1st ed. Chichester, West Sussex, UK: Wiley-Blackwell, 2010. 119-51. ResearchGate. Web. 17 Oct. 2016.
  6. Schallenberg, Marc, Catherine J. Hall, and Carolyn W. Burns. “Consequences of Climate-induced Salinity Increases on Zooplankton Abundance and Diversity in Coastal Lakes”Marine Ecology Progress Series 251 (2003): 181-89. Inter-Research Science Center. Inter-Research. Web.

Protecting Greenwood Lake’s Water Quality Through Stormwater Management

The summer is upon us and Lakes Appreciation Month is right around the corner, what better time to pay a visit to and learn more about the lakes in your area.

Princeton Hydro conducts work on lakes throughout the Northeast to preserve, protect and improve water quality and ecological health, ensuring that your community lakes can be enjoyed now and into the future. Today, we’re putting the spotlight on Greenwood Lake:

Greenwood Lake, a 7-mile-long interstate lake that straddles the border of New York and New Jersey, is a popular recreation spot for residents and tourists of both states. Considered to be one of the top bass fishing lakes in New Jersey, Greenwood Lake is abundant with largemouth and smallmouth bass, yellow perch, chain pickerel and catfish. The lake is also extensively used by residents for swimming and boating.

For over 35 years, Princeton Hydro’s scientists have worked with New Jersey, local governing municipalities, and the various environmental organizations involved with the protection of Greenwood Lake and its watershed. In the early 2000s, we developed a comprehensive Restoration Plan and a proactive monitoring program that we have used over the years to properly manage the lake and its watershed. The plan was developed for the Greenwood Lake Commission and the Township of West Milford with funding provided through the New Jersey Department of Environmental Protection’s Nonpoint Source 319(h) Program. The Restoration Plan focuses heavily on the implementation of various types of stormwater best management practices (BMPs) to help reduce the influx of sediment and nutrients into the lake. We track the positive effects and benefits achieved through these stormwater projects by conducting both storm-event based and in-lake water quality monitoring.

The goal of the stormwater-based efforts is to ensure the lake’s total phosphorus (TP) load is systematically reduced in accordance with the lake’s established Total Maximum Daily Load (TMDL). The TMDL is a regulatory term in the U.S. Clean Water Act, that identifies the maximum amount of a pollutant (in this case phosphorus) that a waterbody can receive while still meeting water quality standards. Princeton Hydro was instrumental in developing the TMDL for Greenwood Lake. Phosphorus entering the lake from runoff is the primary driver of the lake’s eutrophication. The direct results of eutrophication are increases in the density of aquatic plants and nuisance algae. All this added productivity leads to reduced clarity, reductions in dissolved oxygen concentrations, and a number of other ecological impacts that compromise the quality, aesthetics, and use of the lake.

Last year, Princeton Hydro and the Greenwood Lake Commission, with input from the West Milford Environmental Commission, proposed an updated Watershed Implementation Plan (WIP) for the lake. Approved and funded by the NJ Highlands Council, the updated WIP includes a variety of components that build upon the original Restoration Plan and incorporate newly advanced stormwater management and Nonpoint Source Pollution (NPS) reduction technologies.

Belcher's Creek at Edgecumb and Glencross

The WIP includes in‐lake and stream monitoring; the assessment of the existing stormwater structures installed through grant‐based, watershed activities; and the identification of watershed-based projects that can be completed to support the Lake’s compliance with TMDL TP levels with a specific focus on the stormwater runoff produced by Belcher’s Creek, a major tributary to Greenwood Lake.

The WIP also includes the following nine minimum elements considered necessary by both NJDEP and USEPA for funding eligibility:

  1. Identify causes and sources of pollution
  2. Estimate pollutant loading into the watershed and the expected load reductions
  3. Describe management measures that will achieve load reductions and targeted critical areas
  4. Estimate amounts of technical and financial assistance and the relevant authorities needed to implement the plan
  5. Develop an information/education component
  6. Develop a project schedule
  7. Describe the interim, measurable milestones
  8. Identify indicators to measure progress
  9. Develop a monitoring component

While many of these elements have been indirectly addressed to varying degrees in the original Restoration Plan, in order to maximize Greenwood Lake’s opportunities to obtain State and Federal funding for the design and implementation of watershed control measures, the WIP now explicitly correlates the nine elements to eight specific deliverables, which are as follows:

  1. Conduct a detailed in‐lake and watershed‐based water quality monitoring program and compare the data to that collected in 2004 and 2005 to document changes or shifts in water quality.
  2. Meet with the Township of West Milford, Passaic County and other stakeholders to
    inventory recently completed BMPs and other watershed management measures.
  3. Conduct a field‐based evaluation of the stormwater project completed since the original 319‐grant funded Restoration Plan.
  4. Conduct site assessments to identify other potential stormwater/watershed BMP projects.
  5. Conduct a field assessment of the Belchers Creek Corridor to identify potential Nonpoint Source Pollution Reduction Projects.
  6. Assemble the WIP with all the 9 elements fully satisfied.
  7. Schedule and implement stakeholder and public meetings to evaluate project status.
  8. Submit of final version of WIP to the NJDEP and present the findings and recommendations to the public.

This project was initiated in September 2018 and is projected for completion by September 2019. The Greenwood Lake Commission, serves as the inter‐State steward of the Greenwood Lake watershed, and is working closely with Princeton Hydro and the watershed stakeholders (Township of West Milford, Passaic County and others), to ensure the WIP is a holistic document.

Stay tuned for more Greenwood Lake updates as the WIP progresses. For more information about Princeton Hydro’s lake management projects and capabilities, or to discuss your project needs and goals, please contact us.

Some of the photos utilized in this blog are from The Village of Greenwood Lake.

6 Tips To Prepare Your Pond For Spring

It’s officially time to say goodbye to winter and “spring” your pond out of hibernation mode. We’ve put together six tips for getting your pond ready for Spring and ensuring it remains healthy all year long.

1. SPRING CLEANING 

The first step in preparing your pond for Spring is to give it a thorough cleaning. Remove leaves, debris, and any surface algae that may have accumulated over the winter. For shallow ponds, you may be able to use a net or pond rake to remove debris and sediment from the bottom and along the perimeter of the pond.

2. INSPECT YOUR POND FOR DAMAGE

Inspect your pond, including berms, outlet structures, and trash racks for any damage that may have occurred over winter due to ice. If you observe any damage, we recommend contacting a professional right away. One of our engineers or certified pond managers can determine if the damage is superficial or requires more significant repairs. Also, if your pond is equipped with an aeration system, before starting it up, be sure to schedule a system inspection. A thorough inspection and proper start-up procedure will ensure the system remains fully and effectively operational for the entire summer.

3. PUT YOUR POND TO THE TEST

The routine testing of your pond’s water quality is an important part of preventing harmful algae growth, fish kills, and other problems. We recommend conducting a “Spring start up” water quality analysis of your pond. The resulting data will inform the management process and allow for the development of a pro-active, eco-friendly management plan. Maintaining your pond’s water quality helps to control nuisance aquatic species and promote environmental conditions supportive of a healthy and productive fishery.

4. AQUASCAPE YOUR SHORELINE

It’s important to check the pond’s shoreline for any signs of erosion. Mowing to the water line, especially in ponds that have fluctuating water levels, can lead to severe shoreline erosion. Eroding shorelines can be easily stabilized by planting native, riparian plants.

Deep-rooted, native emergent aquatic vegetation is able to tolerate alternating periods of exposure and dry inundation. The correct combination of native aquatic plants, emergent wetland plants, and transitional upland plants can correct or prevent chronic shoreline erosion problems. A properly planted (aquascaped) edge beautifies the shoreline, stabilizes erosion problems, creates fish and amphibian habitat, attracts pollinating species and a variety of birds, and decreases mosquito breeding.

5. CONSIDER INSTALLING AN AERATION SYSTEM

Sub-surface aeration systems eliminate stagnant water and keep your pond thoroughly mixed and properly circulated. These systems are the most cost-effective and energy-efficient way to maintain proper pond circulation. Proper aeration enhances fish habitat, minimizes the occurrence of algae blooms, and prevents mosquito breeding. It’s best to contact a certified lake/pond manager to first determine if aeration is the right solution for you. If it is, an aeration system tailored to your pond’s needs can be designed and installed.

6. HAVE AN ECOLOGICALLY BALANCED POND MANAGEMENT PLAN

There is more to pond management than weed and algae treatments alone. There is also a big difference between simple pond maintenance and ecologically-based pond management. A customized pond management plan acts as a “blueprint” that guides  proactive, long-term care for your pond.

Our certified lake and pond managers can assess the status of your pond and provide you with an environmentally holistic management plan that is based on the unique physical, hydrologic, chemical, and biological attributes of your pond. A management plan identifies the causes of your pond’s problems and provides you with the guidance needed to correct these problems. The results are far more environmentally sustainable than simple (and often unnecessary) reactive weed and algae treatments.

 

To learn more about our lake and pond management services or schedule a consultation, visit: http://bit.ly/pondlake.

Employee Spotlight: Meet Our New Team Members

We’re excited to announce the expansion of our growing business with the addition of six team members who have experience and qualifications in a variety of fields related to water resource management.

Meet the new team members:

alexi sanchez de boado, DC Regional Office Manager and Senior Project Manager

As DC Regional Office Manager and Senior Project Manager, Alexi focuses on watershed management and green infrastructure. For almost two decades, he has managed watershed management projects in the DC metro area, and beyond, for federal, state, county and local governments and other government entities under the authority of the Clean Water Act, National Pollution Discharge Elimination System (NPDES), and related regulations.

Serving as an urban watershed manager and regulator for six years for the District of Columbia’s Watershed Protection Division, Nonpoint Source Management Branch, Alexi managed cross-jurisdictional, urban watershed rehabilitation projects, developed and coordinated the District’s Low Impact Development (LID) Initiatives Program, and oversaw complex stream and watershed assessment projects with a huge variety of stakeholders, from local NGOs to federal land holders. Since then, he has consulted as a scientist in both large and small consulting firms focusing on stormwater pollution, stream restoration, watershed planning, and green infrastructure.

Alexi holds a Master of Science in Environmental and Forest Biology from the State University of New York (SUNY) College of Environmental Science and Forestry (ESF) and a Master of Public Administration from the Maxwell School of Citizenship and Public Affairs at Syracuse University.

In his spare time, Alexi enjoys attending concerts, biking, and traveling, especially through Latin America.

Amanda cote, regulatory specialist

Amanda graduated from Bridgewater State University in Massachusetts with a Bachelor of Science in Geography. She has background knowledge in GIS which lead her to work in college labs making maps and running various applications.  She has also participated in water resources projects and is eager to learn.

In her free time, she enjoys being in the great outdoors. Adventuring is a huge part of her life in any form that she can experience it: hiking, fishing, snowshoeing, swimming, backpacking, etc. But of all places to explore, Amanda’s favorite place to be is on top of a mountain, reflecting on and appreciating the journey she took to climb to its peak.

Matt PapPas, staff engineer

Matt is a newcomer to the engineering field, just graduating in the summer of 2018 with a Bachelor Degree in Civil Engineering and minor in Environmental Engineering from the University of Delaware. As an undergraduate, he was an active member of the UD ASCE chapter, where he was a leader in the organization and eventual captain of the concrete canoe team.

Prior to Princeton Hydro, he worked for a large construction firm in Delaware where he became quite familiar with the practical engineering world and was able to develop his working knowledge of constructability as well as hone his technical writing skills.

In his spare time, Matt enjoys cooking, hiking and wood carving.

Johnny quispe, Environmental Scientist

Johnny is a PhD candidate at Rutgers University’s Graduate Program of Ecology and Evolution investigating the effects of sea level rise on coastal ecosystems and communities. Through his research, he is identifying migration opportunity zones for marsh migration as well as areas for restoration and flood risk management. Johnny integrates social, economic, engineering, and natural systems into his projects to make coastal communities more resilient to natural disasters and climate change.

After Johnny earned his Bachelor of Science in Environmental Policy, Institutions, and Behaviors at Rutgers University, he focused on the conservation, restoration, and remediation of sites in NJ via a variety of roles in the nonprofit, public, and academic sectors. Johnny interned at the New Jersey Department of State and the Office of the Lieutenant Governor, New Jersey Future, Jersey Water Works, and at USEPA Region 2 Headquarters, where he conducted research for the Emergency and Remedial Response Division. In his spare time, he enjoys traveling, hiking, and playing board games.

Jake Schwartz, Project Engineer

Jake is a Project Engineer with a BS in Civil Engineering from Rowan University, which he earned in 2017. After graduating college, Jake worked for a civil and environmental consulting company, where he gained experience with stormwater design, flooding, grading, site layout, construction inspection/administration, and environmental regulation. Prior to his career in civil engineering, Jake worked his way up in the pool industry, starting as a swim instructor. He quickly moved up to a life guard position, and then eventually became responsible for managing 12 commercial swimming pools. As a pool manager, Jake was responsible for system upkeep and water chemistry in the swimming pools. This position enabled Jake to acquire hands on experience with water chemistry and hydraulic principles. In this position, Jake also oversaw 40 staff members, leaving him with substantial leadership experience. Jake’s goal is to use his knowledge and experience to design sustainable site plans for Princeton Hydro’s projects.

Outside of work, Jake enjoys hiking, swimming, going to the beach, and hanging out with friends.

RYAN WASIK, EIT, water resource engineer

Ryan is a Water Resource Engineer with a B.S. in Civil Engineering and a minor in Environmental Engineering from Widener University in in Chester, PA. After graduating, he worked as a highway inspector for roadway reconstruction and rehab projects in Delaware. Then, he worked as a project engineer designing and drafting for a wide range of civil/site design projects throughout the Philadelphia region and New Jersey. He has experience in roadway design, ADA ramp design, site grading and layout, utility design, erosion and sediment control measures, and stormwater design/inspections.

In his free time, Ryan enjoys playing golf, disk golf, running, and playing bass guitar.

November Events Spotlight: Conferences Throughout the Country

Princeton Hydro is participating in a variety of conferences taking place throughout the country that address topics ranging from lake management to green infrastructure resiliency:

October 30 – November 2: North American Lake Management Society (NALMS) Conference

NALMS is hosting its 38th International Symposium in Cincinnati Ohio, titled “Now Trending: Innovations in Lake Management.” This year’s symposium includes a robust exhibit hall, a variety of field trips, and a wide array of presentations on topics ranging from the latest in monitoring technologies to combating invasive species to nutrient and water quality management and more. Princeton Hydro’s Dr. Fred Lubnow, Director of Aquatic Programs, and Dr. Stephen Souza, Founder, both of whom have been members of NALMS since its inception, are presenting and exhibiting during the conference.

LEARN MORE

 

October 31 – November 2: Society for American Military Engineers (SAME) Small Business Conference (SBC)

SAME gives leaders from the A/E/C, environmental, and facility management industries the opportunity to come together with federal agencies in order to showcase best practices and highlight future opportunities for small businesses to work in the federal market. Princeton Hydro is proud to be attending the 2018 SAME SBC Conference, which is being held in New Orleans and co-locating with the Department of Veteran’s Affairs’ National Veterans Small Business Engagement. The program consists of networking events, small business exhibits, a variety of speakers and much more.

LEARN MORE & REGISTER

 

November 2: The 2nd Annual New Jersey Watershed Conference

We are a proud sponsor of this year’s New Jersey Watershed Conference, which is an educational event that aims to advance knowledge and communications on issues related to water quality and quantity across the state. The agenda features a variety of presentations from local experts on watershed management, stormwater, green infrastructure, and the problems and solutions related to the health of our watersheds. Princeton Hydro is exhibiting & our Marketing Coordinator, Kelsey Mattison, is leading a workshop on “How Social Media can be a Champion for your Watershed.”

LEARN MORE & REGISTER

 

November 4 – 8: 2018 American Water Resources Association Conference

The AWRA’s 53rd Annual Water Resources Conference is being held in Baltimore, MD. Community, conversations and connections are highlights of every AWRA conference and the 2018 conference will provide plenty of opportunities for all three, including an exhibitor hall, networking events, and variety of presentations and technical sessions. Princeton Hydro’s Christiana Pollack, GISP, CFM is giving a presentation on flood assessment and mitigation. 

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November 8 – 10: Engineers Without Borders (EWB) USA Conference

The EWB, a nonprofit humanitarian organization that partners with developing communities worldwide in order to improve their quality of life, is hosting its USA National Conference in San Francisco.  The ​annual ​conference ​will ​address ​the ​theme ​“Engineers Unlock Potential.” ​Experts, ​practitioners, ​decision-makers, ​young ​professionals ​and ​students ​from ​a ​range ​of ​sectors ​will come together to network, exchange ideas, foster new thinking and develop solutions to the world’s most pressing infrastructure ​challenges. Princeton Hydro Staff Engineer Natalie Rodrigues, EIT, CPESC-IT, a EWB member, is attending the conference and presentation. Her session, titled “So You Think You Might Like to be an EWB Regional Officer or State Representative, ” is designed for those interested in taking the next step beyond Chapter or Project participation at EWB-USA, as well as for current Regional Steering Committee members who want to “amp up” their game.

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November 13: Society for American Military Engineers (SAME) Philadelphia Resiliency Symposium

SAME Philadelphia is hosting an all day symposium featuring experts on infrastructure resiliency in the face of extreme storms, flooding and other natural disasters. Presentation topics include, Flood Hazard Risk and Climate Change Effects for Bulk Oil Storage Facilities; Post-Storm Infrastructure Improvements and Stream Restoration; and Resilience Risk Analysis and Engineering. Princeton Hydro President Geoffrey Goll, P.E. is giving a presentation titled, “Enhancing Coastal Habitat & Increasing Resiliency through Beneficial Reuse of Dredged Material in New Jersey.” We hope to see you there!

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November 16: NJ Chapter American Water Resources Association (NJ-AWRA) Future Risk Symposium

As the frequency and intensity of storm events changes, how should watershed managers, engineers, and planners make informed decisions for the future? NJ-AWRA’s 2018 Future Risk Symposium, held at Duke Farms in Hillsborough, NJ, will focus on Future Flooding in Riverine Systems with presentations on climate trends, modeling, and planning that can be used in NJ to prepare for future flood events in New Jersey’s riverine systems. Princeton Hydro’s Christiana Pollack, GISP, CFM is giving a presentation on flood assessment, and the concepts and methods used to estimate flood risk for existing conditions and the year 2050.

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STAY TUNED FOR MORE EVENT SPOTLIGHTS!

Efforts to Manage Hydrilla in Harveys Lake Prove Difficult but Effective

Collaboration between state agencies and local organizations in Luzerne County bring in grant money to determine Hydrilla infestation levels in Harveys Lake. Treatment efforts are scheduled for 2019.

Story provided by Princeton Hydro Senior Limnologist Michael Hartshorne, and originally published in the Pennsylvania iMapInvasives Fall 2018 Newsletter

Hydrilla (Hydrilla verticillata)

Hydrilla (Hydrilla verticillata) is a relatively new invasive plant in Pennsylvania with the first documented occurrence in 1989 in Adams County. Still, it was not until recently that lake managers, park rangers, and others in the natural resource field have turned their attention to this aggressive invader. Looking incredibly similar to our native waterweed (Elodea canadensis), hydrilla differs in that it is comprised of 4-8 whorled, toothed leaves in contrast to the smooth edged, 3-leaved whorl of E. canadensis.

 

Harveys Lake, located in the Borough of Harveys Lake (Luzerne County) is a large, deep glacial lake with limited littoral (i.e., shoreline) habitat. A significant body of work has been conducted at the lake with the original Phase I: Diagnostic-Feasibility Lake study conducted in 1992 and a Total Maximum Daily Load (TMDL) issued for phosphorus in 2002.

From 2002 to present, Princeton Hydro has assisted the Borough in the restoration of the lake with a heavy focus on stormwater best management practices (BMPs) supplemented by routine, in-lake water quality monitoring. The goal of the storm water/watershed-based efforts was to reduce the lake’s existing, annual total Hydrilla (Hydrilla verticillata) phosphorus load so it’s in full compliance with the established TMDL.

Mapped locations noted in 2014 and 2015 of hydrilla in Harveys Lake as documented in the Pennsylvania iMapInvasives database.

Over the last 15 years, the installation of these watershed-based projects has led to improved water quality conditions; specifically, phosphorus and algae concentrations have been reduced. While water quality conditions improved Harveys Lake, it was during one of the routine, summer water quality monitoring events conducted in July 2014 that a dense stand of hydrilla was noted at the Pennsylvania Fish and Boat Commission’s public boat launch. More than likely, the plant entered the lake as a “hitchhiker” on the boat or trailer being launched from this public boat launch by someone visiting the lake.

Hydrilla (Hydrilla verticillata) Credit: Nick Decker, DCNR Bureau of State Parks

Since the initial identification and confirmation of the hydrilla, the Borough of Harveys Lake has worked in conjunction with the Harveys Lake Environmental Advisory Council, the Luzerne County Conservation District, the Pennsylvania Department of Environmental Protection, and Princeton Hydro to secure funding for additional surveys to determine the spatial extent and density of growth followed by an aggressive eradication plan.

Grant funds already allocated to Harveys Lake under the state’s Non-Point Source Pollution Program were used to conduct a detailed boat-based and diving aquatic plant survey of Harveys Lake to delineate the distribution and relative abundance of the hydrilla in 2014. During these surveys, the distribution of the hydrilla was found to be limited to the northern portion of the lake with the heaviest densities just off the boat launch with plants observed growing in waters 20-25 feet deep.

A follow-up survey had shown hydrilla coverage to increase from 38% of surveyed sites to 58% of sites in 2016 with hydrilla now present at the lake’s outlet area. Spatial coverage of hydrilla increased from approximately 50 acres in 2014 to 210 acres in 2016, an increase of 160 acres.

This map shows the 2018 proposed treatment area of Harvey’s Lake. Due to funding issues, treatment is now scheduled for 2019. The current hydrilla distribution encompasses the entire littoral zone of Harvey’s Lake.

In hopes of preventing hydrilla escaping into the lake’s outlet stream, the Borough of Harveys Lake funded an emergency treatment of the two-acre outlet area in 2016 utilizing the systemic herbicide Sonar® (Fluridone). A follow-up treatment of 159 acres was conducted in 2017, again utilizing the Fluridone-based systemic herbicide.

The next treatment, which will attempt to cover the majority of the littoral habitat covered by hydrilla, is scheduled for late spring/early summer of 2019. It should be noted that Sonar® is being applied at a low concentration that is effective at eradicating the hydrilla, but will not negatively impact desirable native plant species.

The treatments conducted to date have documented some reductions in the vegetative coverage of hydrilla as well as tuber production relative to the original plant surveys conducted in 2016. However, it is recognized that it will take multiple years of treatment to eradicate this nuisance plant from the lake, as well as a highly proactive, interactive program to educate residents as well as visitors to the lake in preventing the re-introduction of this or other invasive species to Harveys Lake.

 

The successful, long-term improvement of a lake or pond requires a proactive management approach that addresses the beyond simply reacting to weed and algae growth and other symptoms of eutrophication. Our staff can design and implement holistic, ecologically-sound solutions for the most difficult weed and algae challenges. Visit our website to learn more about Princeton Hydro’s lake management services: http://bit.ly/pondlake

Michael Hartshorne‘s  primary areas of expertise include lake and stream diagnostic studies, TMDL development, watershed management, and small pond management and lake restoration. He is particularly skilled in all facets of water quality characterization, from field data collection to subsequent statistical analysis, modeling, technical reporting, and the selection and implementation of best management practices. He has extensive experience in utilizing water quality data in concert with statistical and modeling packages to support load reduction allocations for the achievement of water quality standards or tailored thresholds set forth to reduce the rate of cultural eutrophication. He also has significant experience in conducting detailed macrophyte, fishery, and benthic surveys.

EMPLOYEE SPOTLIGHT: Meet the Interns

This summer, Princeton Hydro is hosting five interns, each of whom are passionate about protecting water quality and preserving our natural resources. From June to August, our interns will gain professional work experience in a variety of subject areas, ranging from stormwater management to dam restoration to ecological design to lake management and much more. They are assisting on a variety of projects, getting real-world practice in their areas of study, and working with a Princeton Hydro mentor who is helping them gain a deeper understanding of the business of environmental and engineering consulting and setting them up for career success.

 

Meet Our Interns:

 

Ivy Babson, Environmental Science Intern

Ivy is a rising senior from University of Vermont, majoring in Environmental Science with a concentration in Ecological Design, and minor in Geospatial Technologies. In the future, she hopes to implement ecological design in urban areas and create a sustainable environment that would allow future generations to care for and interact with a healthy earth.

Ivy will work alongside Senior Aquatics Scientist Dr. Jack Szczepanski and the Princeton Hydro Aquatics team on projects related to lake and pond management, including fisheries management, data collection and analysis, and water quality monitoring. Recently, Ivy assisted Aquatic Ecologist Jesse Smith in completing an electrofishing survey in a Northern New Jersey river.

Learn more about Ivy.

 

Marissa Ciocco, Geotechnical Intern

Marissa is entering her fourth year at Rowan University where she is a Civil and Environmental Engineering major with a Bantivoglio Honors Concentration. In the future, Marissa hopes to work towards creating a greener and safer environment.

During her internship, Marissa will be mentored by Jim Hunt P.E., Geotechnical Engineer, who has already engaged Marissa in a few construction oversight projects, including a culvert restoration effort in Medford Lakes, NJ and observing geotechnical borings in Evesham, NJ.

Learn more about Marissa.

 

Will Kelleher, Environmental Science Intern

Will is a rising junior at the University of Vermont, studying Environmental Science with a concentration in Water Resources. His current career interests are focused around wetlands restoration and water chemistry. He recently spent two weeks studying water management and sustainable technology in the Netherlands and in the past has helped with biological and chemical stream monitoring with Raritan Headwaters Association.

Mentored by Senior Aquatics Scientist Dr. Jack Szczepanski, Will’s area of focus will be lake and pond management. He’ll spend most of his time in the field alongside members of the Aquatics Team collecting water quality data and mapping aquatic plants, learning about aquatic habitat creation, and implementing various invasive aquatic weed control efforts.

Learn more about Will.

 

Veronica Moditz, Water Resources Intern

We are thrilled to welcome back Veronica, who interned with us last year, and is in her final year at Stevens Institute of Technology, pursuing a Bachelor Degree in Environmental Engineering and a Master Degree in Sustainability Management. She is currently the secretary for Steven’s Environmental Engineering Professional Society chapter. In the future, she hopes to work on more sustainable approach to engineering problems.

Veronica will work alongside Project Engineer and Construction Specialist Amy McNamara, EIT, and Mary L. Paist-Goldman, P.E., Director of Engineering Services, on a variety of environmental engineering projects. Most recently, she assisted with a construction oversight and stormwater management project in Morris County, NJ.

Learn more about Veronica.

 

Tucker Simmons, Water Resources Engineer

Tucker is a Civil and Environmental Engineering major at Rowan University focusing on Water Resources Engineering. His Junior Clinic experience includes the study of Bio-Cemented sand and the Remote Sensing of Landfill Fires. In the future, Tucker hopes to work on creating a more sustainable environment.

Throughout his internship, Tucker will be mentored by Dr. Clay Emerson, P.E. CFM, Senior Water Resources Engineer, and will work on projects related to stormwater management, hydrologic and hydraulic analysis, and various aspects of environmental restoration. He recently assisted with a sink hole inspection in Tredyffrin Township, PA and mapped the water depths of a lake in Bucks County, PA.

Learn more about Tucker.

 

Stay tuned for updates on what our interns are working on!