Princeton Hydro Founder Receives Lake Management Achievement Award

We’re thrilled to announce that Princeton Hydro Founder Dr. Stephen J Souza received the North American Lake Management Society’s “2017 Lake Management Success Stories Award” for his work with Lake Mohawk.

While accepting his award Dr. Souza stated, “this would not have been possible had it not been for the foresight of the Lake Mohawk Country Club and the support we have received over the years from the Lake Board, the current General Manager Barbara Wortman, Steve Waehler and the Lake Committee, Ernie Hofer and Gene DePerz of the Lake Mohawk Preservation Foundation, and of course the late Fran Smith.”

Steve went on to thank his staff at Princeton Hydro, especially Chris Mikolajczyk and Dr. Fred Lubnow, for their efforts over the years “collecting and analyzing a variety of lake data and implementing the innovative restoration practices responsible for the lake’s water quality improvements.”

Since 1990, Dr. Souza has worked with the Lake Mohawk Country Club and the Lake Mohawk Preservation Foundation to develop and implement successful lake management strategies to restore and protect the health of the lake and its surrounding watershed.

The NALMS award recognizes an individual or team with notable accomplishment of lake and reservoir management efforts that demonstrate improvements in lake/reservoir condition or watershed management in a cost-effective manner.

Many thanks to Lake Mohawk for the continued partnership and steadfast commitment to water quality. And, thanks to NALMS for bestowing Dr. Souza with this great honor.

Celebrate “Lakes Appreciation Month” All Year

It’s officially the last day of #LakesAppreciation Month, but that certainly doesn’t mean our love for lakes is limited to one month out of the year. Here are a few ideas from North American Lake Management Society (NALMS) for how to appreciate your community lakes all year long:

  1. Appreciate them by enjoying them; plan outings with your family and friends
  2. Arrange a lake or watershed clean-up event; check out these tips for how to get started
  3. Help monitor your local waterbody; New Jersey residents can go here to learn about Community Water Monitoring volunteer opportunities
  4. Inspire others to #getoutside and enjoy; as you’re out and about appreciating your local lakes, remember to take photos and share on social media using these hashtags: #LakesAppreciation and #NALMS

Always remember to enjoy your local lakes responsibly. Here are a few tips to help you have fun in nature while having minimal environmental impact.

(Pictured above: Budd Lake in Mount Olive Township, Morris County, New Jersey)

6 Tips to Prepare Your Pond for Spring

It’s officially time to say good-bye 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 Your Pond

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, contact Princeton Hydro immediately. One of our engineers 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, contact us 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. Princeton Hydro professionals can conduct a “Spring start up” water quality analysis of your pond. The resulting data will enable us to develop pro-active, eco-friendly approaches to control nuisance aquatic species and promote environmental conditions supportive of a healthy and productive fishery.

4. Recognize and Reduce Erosion by Aquascaping the Shoreline

It’s important to check the pond’s shoreline for any signs of erosion, which can be easily stabilized by planting native, riparian plants. This is called “aquascaping”. Aquascaping is a great way to beautify the shoreline, stabilize erosion problems, create fish and amphibian habitat, attract pollinating species and song birds, and decrease mosquito breeding.

Our pond and wetland scientists can design and construct a beautiful, highly functional aquascaped shoreline for your pond.

5. Consider Installing an Aeration System

Sub-surface aeration systems eliminate stagnant water and keep your pond thoroughly mixed and properly circulated. Sub-surface aeration 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. Contact us to discuss if aeration is the right solution for you. If it is, we can design and install the appropriate system for your pond.

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 developed by a Princeton Hydro professional is the “blueprint” you need to proactively care for your pond in a very environmentally responsible manner.

Our Certified Lake and Pond Managers will 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. The plan will identify the causes of your pond’s problems and provide 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.

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These are just a few tips to get your pond ready for a new season of enjoyment. Princeton Hydro can help you every step of the way. Our success in caring for ponds, lakes and reservoirs is the result of starting with the right plan and applying customized, environmentally-sound management techniques. Please contact us to discuss your pond management needs and to schedule an assessment.

Tracking and Managing Harmful Algae Blooms

A Presentation by Princeton Hydro Founder Dr. Stephen Souza
Available for Free Download Here

The presentation covers all things related to identifying, addressing and preventing Harmful Algae Blooms (HABs), including:

  • Understanding what defines HABs, Cyanobacteria and Cyanotoxins
  • Dispelling common misconceptions about HABs
  • Educating on the health implications associated with HABs, specifically related to drinking water and recreational water usage
  • Learning about PARETM – Princeton Hydro’s unique strategy for addressing HABs
    • (P)redict – Forecasting a bloom
    • (A)nalyze – Measuring and quantifying a bloom
    • (R)eact – Implementing measures to prevent and control a bloom
    • (E)ducate – Providing community outreach and public education

To learn more about Princeton Hydro’s Invasive Weed and Algae Management Services, visit our website or contact us!

 

Princeton Hydro Opens a New Office

We are pleased to announce the opening of our new Mid-Atlantic office located in Millersville, Maryland, allowing us to better serve existing and future clients throughout Maryland and Delaware. With the addition of this new location, Princeton Hydro now has five full-service offices from Maryland to Connecticut

For the past nine years Princeton Hydro, LLC has provided pond and lake management services to clients throughout Maryland and Delaware. We are now pleased to announce the official opening of our Mid-Atlantic office, located in Millersville, MD. From this strategic location we will be able to provide both existing and future clients in the Maryland and Delaware region with a full suite of services including but not limited to:

Over the past 20 years Princeton Hydro has become the recognized industry leader in the management and restoration of lakes and ponds. Our certified lake and pond managers are backed by a dedicated staff of water resource engineers, wetland scientists and fishery biologists who have the expertise and experience to solve even the most difficult lake and pond problems.

To commemorate the opening of our Maryland office, Princeton Hydro is extending discounted prices to new and existing clients in Maryland and Delaware for 2017 lake and pond management services. If you would like to schedule a no-cost, no-obligation site consultation, please contact Scott Churm, Director of Aquatic Operations, at schurm@princetonhydro.com.

We appreciate your business!

 

Lake Management and Restoration in the Hudson River Valley

Lake Management Planning in Action
at Sleepy Hollow Lake and Truesdale Lake

The Hudson River Valley encompasses 7,228 square miles along the eastern edge of New York State. It comprises 3 million residents, 133 communities and 553 significant freshwater lakes, ponds and reservoirs. Princeton Hydro has worked with municipalities and organizations in the Hudson River Valley for over 18 years actively restoring, protecting and managing waterbodies throughout the area.

Princeton Hydro is currently implementing customized Lake Management Plans at two waterbodies in the Hudson River Valley: Sleepy Hollow Lake, a 324-acre drinking water reservoir/recreational lake located in Green County, NY and Truesdale Lake, an 83-acre lake in Northern Westchester County, NY.

Sleepy Hollow Lake

Stretching over two and a half miles long and reaching depths of approximately 70 feet, Sleepy Hollow Lake is a NYSDEC Class “A” drinking water reservoir that provides potable water for the Sleepy Hollow community. The lake is also extensively used by residents for swimming, boating and water-skiing. And, it is recognized as an outstanding large-mouth bass and white crappie (current New York State record holder) fishery!

Princeton Hydro was hired by the Association of Property Owners (APO) at Sleepy Hollow Lake to develop a comprehensive lake management plan. The first step involved an in-depth analysis of the biological, chemical and physical attributes of the lake, with the goal being to generate a database that can be used to better understand the interactions defining the Sleepy Hollow Lake ecosystem.

The data collection and investigation phase includes:

  • Watershed Investigation: an in-depth assessment of the major and minor tributaries and road network in order to identify areas of stream bank and ditch erosion; sources of both sediment and nutrient loading to the lake
  • Bathymetric Survey: the accurate mapping of water depths and the quantification of the amount of accumulated, unconsolidated sediment present in the lake
  • Fisheries & Food Web Study: the collection of fish and plankton data for the purpose of creating a comprehensive fisheries management program focused on managing the lake’s outstanding fishery, further promoting the ecological balance of the lake, and enhancing lake water quality
  • Aquatic Plant Mapping: the development of detailed maps identifying the plant species present in the lake along with their relative abundance and distribution throughout the lake, but especially within the shallower coves
  • Hydrologic & Pollutant Budget: the computation of the lake’s hydrologic budget and pollutant loading budget. The hydrologic budget represents the water balance of the lake and is an estimate of all of the inputs and losses of water. The pollutant budget represents an estimate of the amount of nitrogen and phosphorus entering the lake from various sources. These data are used to evaluate the effectiveness of lake management options, enabling us to determine the best, most ecologically sound and most cost-effective approach to protect and improve the lake’s water quality now and into the future.

Princeton Hydro is now in the process of utilizing all of the data developed during the investigation phase of the project to create a comprehensive Lake Management Plan that will be used to guide the APO’s future lake restoration and protection initiatives. The Lake Management Plan and supporting data will also be used by Princeton Hydro on behalf of the APO to seek grant funding for various lake and watershed restoration projects.

Princeton Hydro is also overseeing the aquatic plant management program at Sleepy Hollow Lake, the focus of which is to control invasive plant species in a manner consistent with and complimentary of the lake’s overall ecological enhancement.

Truesdale Lake

At Truesdale Lake, Princeton Hydro is working with the Truesdale Lake Property Owners Association (TLPOA) to develop a comprehensive Lake Management Plan. The Plan provides a detailed project implementation roadmap for TLPOA, including recommendations for priority ranking of particular activities and restoration measures. A key element of the Plan are the short-term (1-year) and long-term (5-year) water quality and problematic algae and invasive aquatic plant control goals. Another highlight of the Plan is the review of Federal, State, County and local grants, programs and initiatives that may provide funding for identified lake and watershed projects.

During the Plan’s development, Princeton Hydro has provided the TLPOA with lake management consultation services such as community education initiatives, the coordination of NYSDEC permitting activities associated with the implementation of lake restoration measures, and the oversight and administration of an aquatic weed management program at the lake.

Earlier this year, Truesdale Lake experienced excessive aquatic weed growth, which significantly reduced the water quality, recreational use and aesthetics of the lake. Princeton Hydro utilized its Truxor, an eco-friendly, amphibious machine, to cut and remove the nuisance weed growth from the lake. This program helped reduce the negative impacts to the lake and lake users caused by the dense weed growth. Future use of the Truxor to remove invasive weeds is already part of the long-term Lake Management Plan for TLPOA. The Truxor will be used in concert with other measures to control invasive weed growth and restore a more balanced native aquatic plant community.

For more information about Princeton Hydro’s work in the Hudson River Valley or to discuss your project goals, please contact us.

Success Spotlight: Strawbridge Lake

The Princeton Hydro team recently completed a spadderdock removal project at Strawbridge Lake, a 33-acre lake considered to be one of the most valuable open space assets in Moorestown, New Jersey.

Spadderdock is an invasive aquatic plant found in lakes and ponds throughout the Eastern US. It can grow quickly and reach large populations totally covering the water surface and shading the bottom so that nothing else can grow. Spadderdock can eliminate important, native plant species and clog waterways.

Princeton Hydro utilized its Truxor DM 5045, an eco-friendly amphibious machine, to dig up the plants at their roots and remove them from the lake. Check out the below before and after photos to see the dramatic transformation. Special kudos to our Senior Scientist J.P. Bell for a job well done! Read more about pesticide-free #lakemanagement solutions!

Client Spotlight: Roaring Brook Lake, Putnam Valley, NY

A Comprehensive Lake Management Plan Designed by Princeton Hydro

roaring-brook-lake Since 1998, Princeton Hydro has been working with the Town of Putnam Valley, often referred to as the Town of Lakes, to restore and maintain its waterbodies. The most recent area of focus is Roaring Brook Lake, a 115-acre man-made lake surrounded by a wooded landscape community that includes 260+ homes. The lake provides a variety of recreational opportunities for boaters, anglers, swimmers and outdoor lovers and is the center point of the Roaring Brook Lake District.

The Town of Putnam Valley and the Roaring Brook Lake District hired Princeton Hydro to conduct a thorough analysis of the lake’s ecological health, identify problems affecting the quality of the lake, and develop a detailed plan to improve and protect the lake. Specifically, Princeton Hydro will implement a detailed assessment of the lake that involves water quality monitoring, bathymetric mapping (measurement of lake depth and sediment thickness), aquatic plant surveys, and quantification of the lake’s hydrologic and pollutant budgets. These data will be utilized collectively to produce a comprehensive management plan for Roaring Brook Lake and its watershed.

Water Quality Monitoring

Water quality data are used to interpret the existing chemistry of the lake, identify water quality trends, pinpoint problems and assess nutrient levels.

At Roaring Brook Lake, Princeton Hydro will specifically collect in-situ data from the surface to the bottom of the water column. The resulting temperature, dissolved oxygen, pH and conductivity data will be used in combination with laboratory generated data to assess the lake’s thermal stability and investigate the potential for internal phosphorus loading. In addition, samples will be collected to identify phytoplankton and zooplankton in the lake; some of the plankton is considered a nuisance while others are considered valuable relative to the lake’s food web.

Bathymetric Assessment

The bathymetric assessment will generate accurate lake water depth, and provide sediment thickness and distribution data for the entire body of water. These data are then used to evaluate the need for dredging, asses how and where aquatic plants become colonized and other management options that can affect long-term decisions regarding the restoration and protection of Roaring Brook Lake. The bathymetric data are also used in the various trophic models that help predict the lake’s response to incoming nutrients.

Specifically, Princeton Hydro will utilize hydrographic surveying methods to conduct the bathymetric assessment of Roaring Brook Lake. A specialized dual frequency fathometer will be used to measure water depth and the thickness of the unconsolidated sediment present throughout the lake. The fathometer is directly tied into GPS, so data are consistently collected at the exact position of the survey transects. The GPS data and accompanying water depth data will be placed into a GIS format for the generation of morphometric data and bathymetric maps of the lake.

Aquatic Plant Mapping

Aquatic plants hold sediments in place, reduce erosion and provide habitat for fish and other important wildlife and insects. Although native aquatic plants are imperative to a lake’s health, an overabundance of these plants and the presence of invasive plants can have very negative impacts.

Princeton Hydro will be conducting a complete mapping of the aquatic plant community within Roaring Brook Lake to identify the plant species present in the lake, their relative abundance and location, and provide a basis for future evaluation of changes in the plant community. This data will greatly inform lake management activities moving forward. Additionally, with this data, Princeton Hydro will be able to assess the effectiveness of the resident grass carp – currently stocked in the lake – in keeping the submerged vegetation under control.

 

Hydrologic and Pollutant Budget

The hydrologic budget represents the water balance of a lake, accounting on an annual scale for all of the inputs and losses of water. The hydrologic data is used extensively in conducting trophic state analyses and is important in determining the feasibility and utility of many in-lake restoration techniques. At Roaring Brook Lake, Princeton Hydro will investigate and quantify four key components of the hydrologic budget, including direct precipitation, overland runoff (stormwater, snowmelt, etc.), tributary inflow and groundwater seepage.

Once the hydrologic budget is complete and land-use has been categorized and quantified, a pollutant budget can then be developed. The development of a detailed pollutant budget is a critical component of any lake management plan. For the purpose of the Roaring Brook Lake study, the term pollutant refers to the nutrients nitrogen and phosphorus as well as total suspended solids. The pollutant budget represents a quantification of the input of pollutants from various sources to the lake. Because the amount of nitrogen and phosphorus present in the lake stimulates eutrophication and results in water quality impacts, proper quantification of the nutrient load is critical for the development of a site-specific and cost effective management plan.

Data Analysis

The data analysis for Roaring Brook Lake will focus on identifying an acceptable in-lake condition (i.e. specific level of algal biomass in the lake) and correlate this to the lake’s annual phosphorus load through a robust water quality model.

The data analysis will involve the review of both historical and current data and will be used to identify correlations and relationships between existing pollutant concentrations/loads and unacceptable water quality conditions (i.e. algal blooms, high rates of turbidity, nuisance densities of aquatic plants, etc.). Water quality thresholds and goals will be established for assessing the long-term progress of the lake management plan.

Lake Management Plan

roaring-brook-lake-1Properly managing your lakes and ponds starts with developing a customized management plan and involves a holistic approach to ensure continued success.

A good management plan is informed by substantial data collection and analysis (as described above); includes any necessary permit requirements and a proposed timetable for implementation; provides recommendations for priority ranking of particular activities and restoration measures; and discusses predicted benefits of the plan’s implementation and how each activity is linked to the established water quality goals. A well-crafted and thorough lake management plan will also include a review of the various Federal, State, County and local grants, programs and initiatives that may provide funding for the identified in-lake and watershed projects.

• • •

Princeton Hydro’s work with Roaring Brook Lake marks the 16th project they’ve conducted for the Town of Putnam Valley. Princeton Hydro’s proven success in watershed management stems from the cumulative training and experience of its staff, and its ability to develop watershed management solutions that are both practical and effective, which has led to the firm’s very high success rate in improving water quality.

If you’re interested in developing a customized, comprehensive management plan for your lake or pond, please contact us!

 

 

 

 

Stormwater Projects in Action

Improving Barnegat Bay through Green Infrastructure and Stormwater Management

FREE BROCHURE DOWNLOAD

American Littoral Society, Ocean County Soil Conservation District and Princeton Hydro recently held a Stormwater Projects in Action workshop. The workshop focused on a number of 319(h) funded projects designed by Princeton Hydro and implemented by American Littoral Society in the Long Swamp Creek/Lower Toms River sub-watersheds of Barnegat Bay. Those projects exemplified how green infrastructure techniques could be used to retrofit, upgrade and compliment standard stormwater management methods. This included the restoration of healthy soils and the construction/installation of bioretention basins, rain gardens, porous pavement, and sub-surface Manufactured Treatment Devices (MTDs).

Event participants learned about the problems affecting Barnegat Bay due to over-development and improper stormwater management. They were presented with examples of the types of green infrastructure solutions that can be implemented in any setting in order to achieve cleaner water and less flooding.

A brochure detailing each of the projects and providing an in-depth look at the incredible work being done to save Barnegat Bay was distributed to event attendees. You can download your free copy here:

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Princeton Hydro President Dr. Stephen Souza gave two presentations at the event. The first presentation explored the Matrix Scoring Tool that Princeton Hydro’s Senior Environmental Scientist Paul Cooper along with Dr. Souza developed to quantitatively evaluate the relative benefit of conducting one stormwater project versus another in a particular area. The 2nd presentation provided an overview of the five stormwater improvement projects that Princeton Hydro conducted as part of the $1,000,000 319(h) grant secured for American Littoral Society. If you’re interested in receiving a copy of either presentation, submit a comment below or email us.

Clean water is fundamental to all life.

 

 

Truxor DM 5045 – The Newest Addition to the Princeton Hydro Family

Truxor DM5045 Stock Image We’re thrilled to announce the arrival of our new Truxor DM 5045!

This multi-functional, eco-friendly, amphibious machine effectively controls invasive weeds and problematic algae growth without the use of pesticides.

Its light-weight construction and highly advanced weight distribution system provide low ground pressure and high floating capacity. This allows the Truxor to operate on water, in deep or very shallow depths, and on dry land without disrupting sensitive environments, like nature preserves, wetlands, canal banks, golf courses and areas that are difficult to access with conventional equipment. And, the Truxor’s highly maneuverable and precise control system ensures easy passage through narrow channels and around hazards.

Equipped with a wide range of tools and accessories, the Truxor DM 5045 can perform a variety of functions, including weed cutting and harvesting, mat algae and debris removal, silt pumping, dredging, channel excavation, oil spill clean-up and much more!

This is the second Truxor to be welcomed to the Princeton Hydro family, which also includes a Marsh Master, another versatile, fully amphibious vehicle. Watch our Truxor DM 5000 in action.

If you’re interested in learning more about our innovative lake and pond management techniques or wondering if the Truxor is the right tool for one of your projects, please contact us!