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.”

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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.

The Borough of Mountain Lakes has received grant funding from the New Jersey Highlands Council to develop a comprehensive Lake and Watershed Management Plan for nine lakes within the Borough. To lead this effort, the Borough engaged Princeton Hydro, a leader in ecological and engineering consulting. The initiative will focus on characterizing hydrologic and nutrient dynamics within the Borough’s lake systems and watersheds to guide targeted water quality improvement and management strategies.

“Mountain Lakes takes great pride in our lakes, which play an important role in defining our community. Through our partnership with the Highlands Council and Princeton Hydro, we’re taking a proactive, data-driven approach to protecting both the environmental and recreational value of our lakes and waterways, with the goal of preserving these vital natural resources for generations to come,” said Borough of Mountain Lakes Manager Mitchell Stern.

A selection process was undertaken by the Borough of Mountain Lakes, Princeton Hydro, and the New Jersey Highlands Council to define the scope of this Lake and Watershed Management Program. In accordance with Policy 1L2 and Objective 1L2a of the NJHC Regional Master Plan, which establish lake management tiers and prioritize lakes greater than 10 acres for protection and management, nine lakes were selected for the study: Birchwood Lake, Crystal Lake, Wildwood Lake, Sunset Lake, Mountain Lake, Shadow Pond, Olive Pond, Grundens Pond, and Cove Pond. These lakes represent the waterbodies in the Borough and were chosen to ensure the program focuses on areas with the greatest potential impact on water quality, watershed function, and community value.

Princeton Hydro’s work will include watershed modeling, hydrologic and pollutant load analyses, and in-lake and watershed-based water quality monitoring. Once the data is analyzed, Princeton Hydro will develop a General Assessment Report that identifies the primary drivers of eutrophication and outlines a prioritized set of management strategies to effectively reduce nutrient loading and enhance long-term lake health.

“The regional, science-based approach to lake and watershed management has proven to be a powerful tool for municipalities in the Highlands Region,” said Christopher Mikolajczyk, CLM, Senior Manager of Aquatics at Princeton Hydro, Certified Lake Manager, and lead designer for this initiative. “We’re excited to collaborate with Mountain Lakes to help identify cost-effective, data-driven strategies that will enhance water quality throughout the watershed and help safeguard these treasured natural resources.”

The New Jersey Highlands Water Protection and Planning Council (Highlands Council) is a regional planning agency that partners with municipalities and counties in the Highlands Region to promote proactive watershed protection. Established under the New Jersey Highlands Water Protection and Planning Act of 2004, the Council has funded numerous water-quality-related planning initiatives.

Historically, municipalities and private lake associations have managed water quality issues independently. However, taking a coordinated, watershed-based approach enables communities to more effectively address pollution sources, improve water quality, and prevent the spread of invasive species and harmful algal blooms.

Mountain Lakes joins several other Highlands region municipalities that have received Highlands council funding to implement similar lake and watershed management initiatives. In 2019, the Borough of Ringwood became the first municipality in New Jerey to adopt a regional, public-private approach to lake management, partnering with four lake associations across six lakes. Since the completion of the Ringwood plan, NJDEP has funded recommendations from the plan. This model has since inspired additional projects, including watershed assessments for West Milford Township, Rockaway Township, Byram Township, Vernon Township, and Somerset County Parks Commission. Princeton Hydro worked with each agency to develop the respective scope of work to secure grant funding from the Highlands Council.

Photo from the Borough of Mountain Lakes. [post_title] => Borough of Mountain Lakes Launches Lake and Watershed Management Program with Funding from NJ Highlands Council [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => borough-of-mountain-lakes-launches-lake-and-watershed-management-program-with-funding-from-the-new-jersey-highlands-council [to_ping] => [pinged] => [post_modified] => 2025-11-11 17:38:59 [post_modified_gmt] => 2025-11-11 17:38:59 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=18685 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [2] => WP_Post Object ( [ID] => 17900 [post_author] => 1 [post_date] => 2025-07-21 14:35:31 [post_date_gmt] => 2025-07-21 14:35:31 [post_content] =>

Welcome to the latest edition of our Client Spotlight blog series, which provides an inside look at our collaboration, teamwork, and accomplishments with one of our client partners.

In this special edition, we’re shining the spotlight on the Town of Mina and Findley Lake Watershed Foundation (FLWF), two organizations working closely together to protect and preserve Findley Lake in Chautauqua County, New York. This charming 300-acre lake is a cherished focal point for recreation, tourism, and community pride, and safeguarding it is a shared responsibility. The Town of Mina and FLWF, a volunteer-led nonprofit, have built a strong partnership dedicated to maintaining the lake’s health and ensuring its long-term sustainability.

We spoke with Rebecca Brumagin, Town of Mina Supervisor, and Ed Mulkearn, Board President of the FLWF.

We kicked-off the conversation with a question for Rebecca:

Q: Rebecca, can you provide an overview of the Town of Mina and the core values the Town prioritizes?

A:

[embed]https://youtu.be/DkloMSAMoyE[/embed]

Rebecca continues: “As part of our 2024 Comprehensive Plan, the Town of Mina identified four core community values that guide our decision-making, with our top priority being Findley Lake!

The lake is the heart of our community. Ensuring it remains clean, beautiful, and accessible for recreation and overall enjoyment is essential to our identity. That’s why we work so closely with FLWF. During the comprehensive planning process, FLWF developed a Lake Management Plan, which now guides our environmental efforts.

Our second core value is economic development. Findley Lake is experiencing an exciting period of growth, with several initiatives underway, including a new warehouse distribution center, growing retail presence, and revitalization in the downtown area. It’s truly a renaissance moment for our community.

Third, we’re deeply committed to preserving and enhancing our community character. We value our rural lifestyle and are working to improve it with expanded trails, new boardwalks, and safer, more accessible green spaces for all to enjoy. And, our fourth core value centers on strengthening local government, becoming more efficient, effective, and responsive to the needs of our residents. We want people to feel heard, supported, and engaged in the future of our town.”

Q: Ed, can you tell us about the history of FLWF and how it evolved into the organization it is today?

A:

“FLWF was established in 2002, but our roots go back much further. Before that, our work was carried out by the Findley Lake Property Owners Association, which formed in the late 1940s after the lake was no longer needed as a power source for milling operations.

At that time, the lake and dam were donated by Larry Schwartz to a group of local, stewardship-minded residents. That group did the best they could with limited resources and knowledge. But as science, lake management practices, and environmental awareness progressed, so did our approach.

By transitioning to a 501(c)(3) nonprofit in 2002, we were able to access grant funding and expand our work significantly. Since then, we’ve purchased weed harvesters, partnered with Princeton Hydro for lake studies, and supported major infrastructure projects like the new sewer system currently in development to address septic-related pollution.

We’ve also taken steps to reduce streambank erosion and manage phosphorus loading that affects lake oxygen levels. Our board is strong and diverse—we have dedicated members with the expertise needed to keep moving the organization and the lake forward. At our core, FLWF is committed to maintaining, enhancing, and improving the quality of Findley Lake and its watershed through science-based action and collaboration.”

Q: Ed, what are the core values that guide FLWF, and which current projects highlight those values in action?

A:

[embed]https://youtu.be/l7ljPic09iE[/embed]

Q: Rebecca, what are some of the initiatives the Town of Mina is leading to support ecological uplift, water quality improvements, and environmental stewardship?

A:

[embed]https://youtu.be/hTb0GMQirgE[/embed]

Rebecca continues: “We’ve made significant strides in advancing the health of our local environment, thanks in part to support from the New York State Department of Environmental Conservation (DEC). We’ve completed three DEC-funded studies that are guiding our next steps.

One study focused on culverts throughout the watershed with the goal of improving water flow and reducing flood risk. Every culvert was assessed to identify those that need repair or replacement. Another study analyzed stormwater runoff, identifying ten key inflow areas to Findley Lake where erosion and sedimentation pose potential threats. Each site was evaluated and prioritized, and we’ve since secured a DEC grant to address the highest-priority site. And, the third study explored in-lake nutrient control strategies, which laid the groundwork for our current partnership with Princeton Hydro on nutrient management efforts.

Beyond lake-focused work, we’re also committed to enhancing community access to nature. We’ve received support from Chautauqua County for efforts that will benefit both the environment and quality of life for residents and visitors alike.”

Q: Ed, reflecting on past collaborations, can you highlight a project or two that FLWF has worked on with Princeton Hydro?

A:

“We first partnered with Princeton Hydro a few years ago when our board recognized the need for expert guidance on lake management. While we have a strong, professional board, we lacked the specialized knowledge in lake ecology and water quality science to move forward confidently with major decisions.

After researching several firms, we chose to bring Princeton Hydro on board to help us better understand nutrient dynamics in the lake. One of our key concerns was the persistent late-summer algae blooms, which we later learned were linked to phosphorus being released from the lake’s sediments.

Princeton Hydro conducted an in-lake nutrient study that clearly explained this internal loading process and helped us chart a path forward. Building on that work, we’re now working with the Princeton Hydro team on a bathymetric and sediment analysis to guide our next step, which will be to install an aeration system to reduce phosphorus release and improve water quality.

Princeton Hydro’s expertise has been instrumental in making complex science understandable and actionable, which has helped us take meaningful steps toward restoring the health of Findley Lake.”

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Q: Rebecca, is there anything you'd like to add about the Town’s collaboration with Princeton Hydro?

A:

[embed]https://youtu.be/vtEIi23Ov98[/embed]

Following Rebecca’s remarks, Ed adds: “I’d just like to echo what Rebecca said—the Princeton Hydro team we worked with this Spring was truly a pleasure to collaborate with. Their depth of knowledge was impressive, but just as important was their ability to communicate complex concepts in a way that was clear and easy for our board to understand. That kind of approachability made a big difference. It was a great experience working with them.”

Q: Ed, for those interested in supporting FLWF’s mission, how can individuals get involved and contribute to your efforts?

A:

“We’re always grateful for donations, they fuel much of what we do. But beyond financial support, one of the most valuable ways people can contribute is by sharing their experiences and ideas.

There are countless lakes and watershed organizations out there facing similar challenges, and many have come up with innovative, cost-effective solutions. We’re always eager to learn from others; whether it's a new technology, a successful restoration approach, or a creative funding strategy. Collaboration and information-sharing are incredibly powerful tools in watershed management. If you’ve worked on a similar issue or simply have ideas that could help, we’d love to hear from you. The more we connect and learn from each other, the better we can protect and improve Findley Lake for generations to come.”

Following Ed’s comments, Rebecca adds: “One of the things that makes the Town of Mina so special is the strong culture of volunteerism. We’re fortunate to have many residents, often individuals who’ve had professional careers elsewhere, who bring their skills, energy, and passion to our community.

Even though we’re a small town, we benefit from a wide network of nonprofit organizations and local initiatives. For example, the Findley Lake Nature Center is actively working on trail development, and there are many other opportunities for people to get involved in stewardship, whether it’s helping maintain green spaces, supporting water quality efforts, or sharing expertise on local projects.

What’s especially unique about our community is how welcoming we are. Newcomers don’t have to wait decades to feel at home here—they’re embraced right away, and their ideas are valued. That openness has really enhanced our ability to protect Findley Lake and strengthen the town as a whole.”

To close out the conversation, we asked Rebecca and Ed if there was anything else they’d like to share.

In the video below, Ed reflects on the strong sense of community in the Town of Mina and the local support that fuels the ongoing efforts to protect and preserve Findley Lake:

[embed]https://youtu.be/nrsMt1WMODw[/embed]

After Ed’s remarks, Rebecca shares a few additional reflections: “One particularly meaningful designation we’ve received is from New York State, which has identified us as one of only two rural NORCs (Naturally Occurring Retirement Communities) out of 43 statewide. This designation recognizes our vibrant population of older adults and has allowed us to pursue new forms of support and services. We’re currently looking into developing a pocket neighborhood to help seniors remain in the community, where they continue to be active, involved, and deeply valued.

And here’s a fun fact that speaks to the energy of Findley Lake: it serves as the practice site for the women’s rowing team from Mercyhurst University, who happen to be the reigning national champions. Pretty cool, right?”

Yes, Rebecca, we think that’s very cool!

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Photo from Chautauqua County Visitors Bureau[/caption]

A heartfelt thank you to Rebecca and Ed for their partnership and for taking the time to speak with us to share their passion for protecting Findley Lake and strengthening the Town of Mina. Their leadership and collaboration exemplify the power of community-driven stewardship.

To learn more about their work and how you can get involved, we encourage you to visit the Town of Mina’s website and FLWF at findleylakewf.org.

Click here to read the previous edition of our Client Spotlight Series featuring Farmington River Watershed Association Executive Director Aimee Petras.

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Each July, we take time to reflect on the beauty, value, and importance of lakes during Lakes Appreciation Month. Since 1998, this national initiative founded by the North American Lake Management Society (NALMS) has encouraged communities to get outside, engage with their local waterbodies, and take action to protect them.

This year, we’re sharing four simple and meaningful ways to celebrate. If you're a lake regular or you're just starting to dip your toes into lake stewardship, you'll find something valuable here!

1. Get to Know Your Lake

There’s no better way to appreciate your local lake than by exploring it up close. Take a morning paddle, enjoy a peaceful shoreline walk, or head out with a fishing rod and a friend. Lakes offer the perfect setting for adventure, reflection, and connection with nature. Whether it’s your first visit or your hundredth, there’s always something new to discover and appreciate at your local lake.

And thanks to digital tools, exploration doesn’t stop at the water’s edge. For example, in Pennsylvania, the Bucks County Conservation District, in collaboration with Bucks County Planning Commission and Princeton Hydro, recently launched an interactive ArcGIS StoryMap showcasing the Lake Luxembourg watershed and Conservation Pool Restoration Project. This interactive tool lets you experience the lake’s ecology in a whole new way. Take a deeper dive—without getting your feet wet—and check out the StoryMap here.

2. Join the Secchi Dip-In

Join lake lovers across North America for the annual Secchi Dip-In, a citizen science event where volunteers collect water clarity data using a simple Secchi disk. This collective initiative helps monitor lake health over time and contributes valuable data to local lake managers and the broader scientific community.

Getting involved is simple—grab a Secchi disk, take a turbidity reading, and submit your data online using the Secchi Dip-in database. Need guidance on how to use a Secchi disk? Check out our instructional video for a step-by-step walkthrough:

[embed]https://youtu.be/cj7YEctvqRQ?si=jgI-d4SjNXillUr_[/embed] While you're on the water, keep an eye out for harmful algal blooms (HABs). You can report potential blooms using the bloomWatch app, a helpful tool that connects citizen scientists with local environmental officials. Click here to learn more about identifying, monitoring and reporting HABs.

3. Create and Share Lake-Inspired Content

Get creative and let your appreciation for lakes shine. Try your hand at Lakes Appreciation Month Bingo, make a short video, write a lakeside haiku, or paint a scene from your favorite shoreline. When you express your love for lakes through art, you can also inspire others to connect with and care for their local lakes.

You can also participate in the NALMS “Show Your Lakes Appreciation” Challenge. While you’re out enjoying your favorite lake, snap a #lakeselfie, capture a scenic sunset, or photograph your pet mid-paddle. Post your photo on your favorite social media platform with the hashtag #LakesAppreciation and include the name of the lake in your caption for a chance to win prizes and be featured online. The contest runs all month long!

Here's a winning entry from last year—a joyful shot of “Jo Jo the dog kayaking on Lake Michigan.”

4. Take Action and Give Back

Looking to make a tangible impact? Volunteer for a local lake cleanup, support your watershed association, or become a lake steward helping to monitor your lake's water quality, remove invasive species, and more! Even taking small actions in your own backyard, like reducing fertilizer use or installing a rain garden, can make a big difference for water quality.

Princeton Hydro has had the privilege of partnering with lake associations, municipalities, and nonprofit organizations across the country on a wide range of lake restoration and stewardship efforts. These partnerships show what’s possible when communities come together to invest in their lakes. Read about our recent collaboration with Smith Mountain Lake in Virginia.

Whether you’re picking up trash, attending a public meeting, or just learning more about lake science, your involvement matters.

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Lakes are vital ecosystems and treasured community assets. Let’s use this month to celebrate them, protect them, and remind others just how important they are! To explore more ways to get involved this Lakes Appreciation Month, visit NALMS.org. To learn more about how Princeton Hydro manages and monitors lakes, click here. [post_title] => Celebrate Lakes Appreciation Month: 4 Ways to Show Your Love for Lakes [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => celebrate-lakes-appreciation-month-4-ways-to-show-your-love-for-lakes [to_ping] => [pinged] => [post_modified] => 2025-11-07 19:41:03 [post_modified_gmt] => 2025-11-07 19:41:03 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=17700 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [4] => WP_Post Object ( [ID] => 17695 [post_author] => 1 [post_date] => 2025-06-28 00:29:22 [post_date_gmt] => 2025-06-28 00:29:22 [post_content] =>

Nestled in Luzerne County, Pennsylvania, Harveys Lake spans 622 acres and is the largest natural lake by volume in the Commonwealth. Beyond its scenic beauty and popularity as a recreational destination, the lake plays a critical ecological role in the region.

Harveys Lake forms the headwaters of Harveys Creek, which flows into the Susquehanna River and ultimately the Chesapeake Bay. As such, it is part of the greater Susquehanna River Valley and contributes to the health of the Chesapeake Bay watershed. The lake and its outflow are designated High Quality – Cold-Water Fisheries, supporting sensitive aquatic life, providing vital cold-water habitat, and contributing to regional biodiversity.

Given its ecological significance and its connection to regional waterways, efforts to manage stormwater and reduce nutrient pollution in the Harveys Lake watershed are more than just local improvements, they are integral to protecting downstream water quality all the way to the Chesapeake Bay.

In 2022, building on decades of water quality initiatives, the Borough of Harveys Lake launched a forward-thinking pilot project to enhance stormwater treatment using innovative nutrient-filtering technologies. Supported by funding from the National Fish and Wildlife Foundation (NFWF) Chesapeake Bay Small Watershed Grant Program and designed and implemented in partnership with Princeton Hydro, this project explores the use of biochar and EutroSORB® filtration media to capture dissolved nutrients, an important step toward improving water quality and meeting regulatory goals.

This blog explores the local history of water management at Harveys Lake, the science behind this novel pilot approach, and the broader implications for watershed protection across the region.

Historical Management of Harveys Lake

Once a remote, wooded landscape, the Harveys Lake area was settled in the early 19th century and gradually developed into a hub for timbering and milling. By the late 1800s, the lake was regularly stocked with game fish, and with the arrival of the railroad in 1887, it quickly became a popular summer destination. The shoreline soon featured hotels, restaurants, and even an amusement park.

As the community flourished, the lake's natural systems began to show signs of strain. Like many waterbodies across the country, Harveys Lake faced growing water quality challenges driven by stormwater runoff, nutrient pollution, and a lack of formal environmental protections. By the 1960s, declining water clarity and seasonal algal blooms began to impact recreation, contributing to the lake’s gradual transition from a bustling public getaway to a primarily residential community.

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Harveys Lake, Luzerne County, PA in February 2023 (photo by Jason Miller)[/caption]

A significant shift occurred following the passage of the U.S. Environmental Protection Agency’s Clean Water Act of 1972. Harveys Lake established a municipal sewer authority, and construction began on a utility line around the lake's perimeter to reduce point-source pollution. Still, algae blooms persisted throughout the 1980s, fueled by nonpoint sources such as stormwater runoff, lawn fertilizers, and waterfowl droppings.

In 1994, a Phase I Diagnostic Feasibility Study was conducted that formally identified Harveys Lake as impaired due to recurring algal blooms linked to elevated nutrient levels. Following this study, a Total Maximum Daily Load (TMDL) was established, and management efforts were initiated to meet long-term water quality goals.

Since 2003, the Harveys Lake watershed has undergone extensive stormwater management efforts, including the installation of numerous manufactured treatment devices (MTDs) to reduce pollutant loading. Most of these MTDs are nutrient separating baffle boxes (NSBBs), chosen due to the watershed’s steep slopes, dense residential development, and shallow bedrock. The first NSBB, pictured below, was installed at Hemlock Gardens:

In 2009, the Borough of Harvey’s Lake worked with Princeton Hydro to develop a Stormwater Implementation Plan that laid the foundation for future restoration efforts. Over the following years, the Borough of Harveys Lake, supported by state and regional grants, implemented 34 stormwater best management practices (BMPs) and installed four floating wetland islands throughout the watershed. Volunteers install native plants in one of the FWIs installed in Harveys Lake. Photo by: Mark Moran, The Citizen’s Voice.

These projects were strategically designed to reduce nutrient loading, enhance water quality, and move the lake closer to achieving its TMDL targets. Click here to read more about these efforts.

Innovative Solutions for Stormwater Nutrient Reduction

While NSBB stormwater BMPs are highly effective at capturing sediments and associated pollutants, they are limited in their ability to remove dissolved nutrients, particularly nitrogen and phosphorus. This is evident in the Harveys Lake Watershed, where NSBBs remove approximately 70% of total suspended solids (such as sediment and plant debris), 35% of total phosphorus, and 0% of total nitrogen. To address this gap and improve overall nutrient removal efficiency, the Borough of Harveys Lake received funding from the NFWF Chesapeake Bay Small Watershed Grant Program to augment existing MTD stormwater BMPs using new filter technologies.

Partnered with Princeton Hydro for design, implementation, and technical support, the Borough launched a unique pilot project involving the installation of biochar and EutroSORB® (manufactured by SePRO Corporation) to evaluate the effectiveness of these two innovative materials in removing dissolved phosphorus and total nitrogen from stormwater runoff before it reaches Harveys Lake.

Biochar, a carbon-rich material derived from plant biomass, is valued for its high surface area and nutrient-adsorption capacity. EutroSORB® is a manufactured media specifically engineered to bind and retain dissolved phosphorus with demonstrated effectiveness in aquatic systems.

Filter socks filled with either biochar or EutroSORB® were installed at key stormwater outfalls and stream inlets that drain directly to the lake. At four NSBB sites, the socks were secured beneath manhole covers using a rope-and-carabiner system designed for easy, seasonal replacement. Each sock weighs approximately 50–60 pounds when saturated and was carefully positioned to avoid dislodgement or blockage of outlet pipes during high-flow events.

At the Hemlock Gardens site, which features a larger, multi-tray baffle box, twelve filter socks were installed across two horizontal trays to maximize contact time between stormwater and the filter media.

By integrating these innovative filter techniques into the existing BMP infrastructure, the Borough of Harveys Lake is taking a proactive, science-based approach to nutrient reduction and long-term water quality improvement.

Measuring Success: Sampling, Monitoring, & Key Findings

Princeton Hydro implemented a comprehensive water quality monitoring program in the Harveys Lake watershed to assess the real-world performance of the biochar and EutroSORB® filtration systems under varying hydrologic conditions, with a particular focus on dissolved nutrients that contribute to eutrophication.

Monitoring Set-Up

Six stormwater monitoring stations were established at locations where biochar or EutroSORB® were deployed within NSBBs or stream inlets. Each site included paired upstream (pre-treatment) and downstream (post-treatment) sampling points to capture the nutrient concentrations entering and exiting the filtration media.

Stormwater sampling was conducted during six separate rainfall events between March and April 2025. At each location, during storm flow conditions, discrete grab samples were collected via a portable polyethylene sampling pole and analyzed for key water quality parameters.

Data Analysis & Pollutant Load Modeling

Beyond concentration-based comparisons, Princeton Hydro used empirical monitoring data to model pollutant loads upgradient and downgradient of the filtration media. These load estimates provide insights into pollutant removal effectiveness on a mass basis, with a focus on:

Total Nitrogen (TN),
Total Phosphorus (TP),
Total Suspended Solids (TSS), and
Soluble Reactive Phosphorus (SRP).

Emphasis was placed on SRP—the biologically available form of phosphorus most readily assimilated by algae and a key driver of harmful algal blooms and eutrophication. Because phosphorus is the target pollutant in Harveys Lake’s TMDL, SRP reduction serves as a critical indicator of the filtration media’s performance and its potential role in long-term water quality management strategies.

Key Findings

Overall, the study revealed variable but promising results across media types and installation locations:

SRP: Reductions were more pronounced in the EutroSORB® dataset, with 50-83% of NSBB samples and 67% of stream samples showing improvement. Biochar performed well in stream applications, achieving SRP reductions in 83% of samples, and moderately in NSBBs, with 33-67% showing positive results.
TN: Reductions were most evident in EutroSORB®-treated NSBBs, with 67-100% of samples showing a net decrease in concentrations.
TP: Removal was most effective in NSBBs utilizing EutroSORB®, where 67% of samples showed a net reduction, with values ranging from -14% to -70%. Biochar-treated NSBBs demonstrated more modest results, with 33-50% of samples showing TP reductions.

These early findings suggest that both EutroSORB® and biochar hold promise as cost-effective tools for reducing soluble phosphorus in stormwater runoff. Additionally, observed differences in removal efficiency, based on installation context (NSBB vs. stream), filter media volume, and site-specific hydrologic conditions, underscore the importance of continued monitoring and system refinement.

Engaging the Community & Enriching the Landscape

As part of the project’s commitment to long-term sustainability and public education, a native pollinator garden was established near the Harveys Lake Department of Public Works garage, adjacent to the Little League fields.

[gallery link="none" ids="17609,17612,17608"]

After the final sampling in April 2025, the nutrient-saturated biochar and EutroSORB® socks were removed from the stormwater treatment systems. The spent biochar, having captured phosphorus and nitrogen from runoff, was repurposed as a soil amendment to enrich a 500-square-foot planting area. This repurposing effort served a dual purpose: demonstrating a closed-loop approach to managing excess nutrients while also creating a community-oriented space that supports local biodiversity.

The Harveys Lake Environmental Advisory Council volunteered to help plant the garden, installing 450 native plant plugs across nine species including Foxglove Beardtongue, Clustered Mountain Mint, Blue Wild Indigo, and Common Yarrow to attract pollinators such as butterflies, bees, and songbirds.

Designed by Princeton Hydro, the pollinator garden serves as both an ecological asset and an educational tool. Its prominent location next to the ballfields encourages community engagement, and an interpretive sign on-site helps visitors understand the garden’s purpose and its connection to local water quality initiatives. The sign features a QR code linking to an interactive ArcGIS StoryMap, developed by Princeton Hydro, which explores the broader context of the project. It draws connections between nutrient management efforts in Harveys Lake and similar challenges facing the entire Chesapeake Bay watershed, emphasizing how local actions contribute to regional water quality improvements. To support public outreach, the StoryMap was also shared on the Borough’s website, making this educational resource widely accessible to the community.

Click here to learn more about and explore the StoryMap.

It is important to note that while this project illustrates a successful example of biochar reuse, all reuse applications must be assessed on a case-by-case basis. For example, biochar exposed to hazardous pollutants is not suitable for soil use. In this case, the biochar had only been used to absorb excess nutrients, making it appropriate for the garden setting.

A Scalable, Shareable Solution

Supported by the U.S. Environmental Protection Agency and the NFWF’s Chesapeake Bay Stewardship Fund, which promotes community-based conservation strategies to protect and restore Chesapeake Bay’s natural resources, this project was designed with scalability in mind. A core objective was to evaluate whether these filtration media could be more broadly implemented throughout the Chesapeake Bay watershed as a low-cost, community-integrated strategy for achieving water quality goals.

Through continued innovation and shared learning, small-scale efforts like this can drive large-scale impact, proving that effective water quality solutions don’t have to be costly or complex. The Harveys Lake model offers a replicable framework that communities across the region can adopt and adapt, empowering local action that contributes meaningfully to the restoration and resilience of Chesapeake Bay.

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The Borough of Harveys Lake, in partnership with Princeton Hydro, launched a new interactive ArcGIS StoryMap that chronicles the community’s long-standing commitment to water quality and showcases a recently completed pilot project aimed at reducing stormwater nutrient pollution.

This engaging digital resource combines maps, multimedia, charts, diagrams, and narrative storytelling to bring the science and history of Harveys Lake’s multi-year environmental restoration efforts to life. It explores both the local impact and the broader significance of these initiatives, drawing connections to similar water quality challenges throughout the Chesapeake Bay Watershed.

Designed with accessibility in mind, the StoryMap invites users to explore project sites, restoration progress, and technical details without the need for specialized GIS training or software. Interactive features, such as zoomable maps, clickable pins, and site-specific details, offer an intuitive, user-friendly experience.

More than just a visualization tool, the StoryMap serves as a community-education and engagement platform. It highlights how local stormwater management strategies, like those implemented at Harveys Lake, can drive positive, region-wide change, underscoring the vital role of place-based solutions in improving watershed health across the Chesapeake Bay region.

What You’ll Discover Inside the StoryMap

The StoryMap begins with an exploration of the Chesapeake Bay Watershed—one of the most ecologically and economically significant estuaries in the United States. This region faces complex environmental challenges, including nutrient pollution, habitat loss, and climate change impacts. Over the past several decades, a wide range of stakeholders have engaged in coordinated restoration efforts to protect and improve water quality across the watershed.

Using interactive maps, expandable sections, and rich visuals, this introductory portion of the StoryMap places Harveys Lake in a broader regional context. It sets the stage for understanding how local action, such as nutrient reduction at Harveys Lake, plays a critical role in supporting the health of the entire Chesapeake Bay ecosystem.

The next section, “Harveys Lake: A Case Study,” highlights the Borough's ongoing dedication to protecting the lake and improving water quality through science-based solutions and collaborative efforts. The StoryMap provides:

A pictorial, historical timeline of water quality management at Harveys Lake;
An interactive Restoration Progress Map with clickable project sites;
Notable milestones in reducing nutrient pollution and managing stormwater; and
Restoration project highlights, complete with historical maps, illustrations, and photos

The final section of the StoryMap dives into a 2025 pilot initiative that used biochar and EutroSORB® filter media to reduce dissolved phosphorus and total nitrogen from stormwater runoff. Organized into subsections—Project Information, Methodology, Results and Discussion, Pollinator Garden, and Future Implications—the StoryMap offers a detailed look at this innovative nutrient-reduction strategy and its potential for replication across the Chesapeake Bay watershed.

In addition to detailing the pilot project, this section also spotlights the creation of a native pollinator garden, planted using the spent biochar as fertilizer. This closed-loop approach not only reinforces the project’s long-term ecological value but also demonstrates how thoughtful design can deliver multiple environmental benefits while cultivating a vibrant community-oriented space that supports local biodiversity.

To extend the impact of this initiative, the StoryMap was provided to the Harveys Lake Borough Environmental Advisory Council (EAC) and is publicly accessible via the Borough’s website. A QR code linking to the StoryMap is also featured on the new pollinator garden sign at the project site, allowing visitors to engage with the digital experience in real time.

Click here to explore the StoryMap now!

By blending maps, visuals, and interactive storytelling, this StoryMap serves as both an educational tool and a digital archive of the latest Harveys Lake water quality project and its long history of stewardship. We invite you to explore this engaging platform and see firsthand how thoughtful, science-based restoration is shaping a healthier future for Harveys Lake, and the entire Chesapeake Bay watershed.

This material is based on work supported by the U.S. Environmental Protection Agency (Assistance Agreement No. CB96358101) and the National Fish and Wildlife Foundation’s Chesapeake Bay Stewardship Fund, which supports community-based strategies to conserve and restore the Chesapeake Bay’s natural resources. Click here to learn more information about the grant program.

Click here to learn more about Harveys Lake or how to get involved in a Harveys Lake Borough Environmental Advisory Council stewardship program.

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The Bucks County Conservation District, in collaboration with Bucks County Planning Commission and Princeton Hydro, has launched an interactive ArcGIS StoryMap showcasing the Lake Luxembourg Conservation Pool Restoration Project. This engaging web application weaves together interactive storytelling, multimedia, charts, diagrams, and dynamic web maps to provide an in-depth look at the decade-long journey to restore Lake Luxembourg's Conservation Pool.

Designed as a publicly accessible resource, the StoryMap allows users to explore project details in an intuitive, interactive format—zooming and panning through specific project areas, viewing site attributes, and navigating restoration initiatives without the need for specialized GIS software or training. Its goal is to connect the community with its watershed, showcase the significance of restoration efforts, and inspire environmental stewardship.

Let’s take a closer look at the restoration project and how the StoryMap brings it to life.

The Lake Luxembourg Conservation Pool Restoration Project

In the summer of 2024, the Bucks County Conservation District in collaboration with Bucks County government completed the Conservation Pool Restoration Project, the culmination of a decade-long effort to improve water quality in the Core Creek watershed.

[caption id="attachment_17211" align="alignnone" width="1631"]

Overview of the Core Creek watershed. The Lake Luxembourg reservoir sits at the southern, downstream end of the watershed.[/caption]

The Conservation Pool is an upstream section of Lake Luxembourg, a 174-acre reservoir that serves as the final major stop for Core Creek before it flows into Neshaminy Creek. Located northeast of the Woodbourne Road bridge, the Pool accounts for one-tenth of the lake’s total area. Surrounded by wetlands, forests, and agricultural fields, it also receives water from two smaller tributaries in addition to Core Creek.

The project, with engineering and design beginning in 2016, focused on enhancing the Conservation Pool’s ability to filter pollutants by reducing sediment and nutrient buildup. To achieve this, the project team created a sediment forebay—an upstream settling basin designed to capture sediment before it enters the main lake—by dredging 15,000 cubic yards of phosphorus-rich sediment from the Pool’s upstream section. Native vegetation was planted along the shallow banks to stabilize the shoreline, filter excess phosphorus, and establish an emergent wetland system that supports native wildlife.

Over the course of a month, approximately 36,000 live plugs were planted at the Lake Luxembourg Conservation Pool. Wooden stakes, construction fencing, and twine was installed around planting areas to deter geese from eating the young plants:

[gallery link="none" columns="2" size="medium" ids="17214,17213"] Then, on September 6, 2024, the project team worked with volunteers to install more native plants:

This long-term management approach enhances pollution control in the watershed while ensuring future maintenance and sediment removal can be carried out efficiently. Princeton Hydro continues to work with watershed stakeholders to improve Lake Luxembourg’s water quality, including partnering with BCCD to reassess and update stabilization practices in areas affected by the changing climate and invasive species.

Now, thanks to the ArcGIS StoryMap, the entire restoration process can be explored in an interactive and engaging way!

The StoryMap at a Glance: A Comprehensive Interactive Experience

Restoring a watershed is a complex, multi-year, multi-pronged effort. While project reports and technical documents provide valuable data, they don’t always capture the full scope of the work in an accessible way. That’s where the Lake Luxembourg Conservation Pool Restoration Project StoryMap comes in. This interactive digital experience transforms years of planning, permitting, construction, and ecological restoration into a visually rich, user-friendly platform.

The journey begins with “A Watershed Story: Understanding the Core Creek Watershed,” which introduces users to the region’s significance and challenges. Engaging visuals, clickable maps, and educational diagrams help explain watershed dynamics, land use changes, and the importance of water quality management.

Next, “Past Restoration Projects in the Core Creek Watershed” highlights nine municipal and private projects designed to reduce sediment and nutrient loads, featuring an interactive map of efforts like the Lake Luxembourg Southeast Shoreline Stabilization and Pocket Wetland Creation.

The StoryMap then shifts focus to the Conservation Pool Restoration Project, exploring key project components with interactive site maps and detailed insights, including:

Project history & funding sources – tracing the multi-year planning and permitting process
Construction milestones – including drone flyovers, time-lapse photography, and before-and-after galleries
Ecological impact – showcasing shoreline stabilization, wetland restoration, and wildlife support

A highlight of the StoryMap is the “Construction at a Glance” section, featuring a compelling YouTube video that captures the restoration effort from start to finish. Click below to watch the video now:

[embed]https://youtu.be/QS3q8S440H4?si=xrZ1vqKH0cUHm1uA[/embed]

The final section, “Future of the Core Creek Watershed,” looks ahead at upcoming restoration efforts, the ongoing impact of climate change, and strategies for long-term ecosystem resilience. Topics include climate projections for Bucks County, extreme weather impacts, and collaborative conservation efforts.

By blending maps, visuals, and interactive storytelling, this StoryMap serves as both an educational tool and a digital archive of the Lake Luxembourg Conservation Pool Restoration Project. Explore the StoryMap now and see for yourself how this vital environmental restoration initiative is shaping the future of the watershed.

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Welcome to our Spring Events Spotlight! This season, the Princeton Hydro team is excited to sponsor and participate in a variety of conferences, webinars, community gatherings, and symposiums. Explore the lineup, find event details and registration links, and join us as we connect, collaborate, and share insights.

March 22: World Water Day

World Water Day, established by the United Nations in 1993, highlights the vital role of water in our world. This year’s theme, "Glacier Preservation," underscores the critical role of glaciers in sustaining life and the water cycle. To celebrate, The Watershed Institute is hosting a World Water Day event packed with interactive activities, including games, water-themed arts and crafts, a vernal pool exploration hike, and up-close encounters with aquatic critters. Participants will also discover ways to safeguard local waterways and help keep our water resources clean and healthy.

Get more info and register.

March 25: Save the Environment of Moorestown Annual Meeting

Save the Environment of Moorestown (STEM) will hold its annual meeting on Tuesday, March 25, at 7 p.m. at the Community House. The event will feature guest speaker Michael McGraw, CSE, QAWB, ACE, Senior Project Manager and Senior Wildlife Biologist in our Regulatory Compliance & Wildlife Surveys team, who will discuss the findings of a recent ecological study of Swede Run.

Mike, who has over 20 years of experience in ecological assessments and wildlife surveys, led the study, which focused on the section of Swede Run within the Swede Run Field Open Space. Funded by a 2024 New Jersey Audubon Grant, the study assessed ecological, geomorphic, and water-quality conditions. The findings will help STEM secure grant funding for future habitat restoration efforts, building on past work completed in collaboration with the U.S. Fish and Wildlife Service and the township. Refreshments will be provided at the meeting.

Learn more.

March 29: 2025 Watershed Congress

Presented by the Delaware Riverkeeper Network, the 2025 Watershed Congress takes place at Alvernia University in Reading, PA. 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, a proud event sponsor, is leading a breakout session: “20 Years of Watershed Management of New Jersey’s Largest Lake” presented by Patrick Rose, Aquatics Project Manager, and Ivy Babson, PWS, Environmental Scientist.

Get more info and register.

March 29: NJCOLA Member Meeting - Learn About the Latest in HAB Management

Join us for the New Jersey Coalition of Lake Associations (NJCOLA) Member Meeting at the scenic Lake Mohawk Country Club for a day of information sharing and educational workshops. This year’s event delves into the latest updates on Harmful Algal Bloom (HAB) Management, focusing on the 2024 New Testing Requirements for Treatments. Princeton Hydro Senior Technical Director, Ecological Services, Dr. Fred S. Lubnow, will be a featured speaker and panelist, presenting "The Nearshore Monitoring and Management of HABs in Lakes and Reservoirs." Gain expert insights into effective strategies for monitoring and mitigating HABs, and connect with lake homeowners, environmental professionals, and community leaders who are dedicated to preserving New Jersey’s lakes.

Get more info and register.

April 9: 6th Annual Harmful Algal Bloom Summit

We’re excited to share that the NJDEP’s 6th Annual Harmful Algal Bloom (HAB) Summit will take place virtually via Microsoft Teams on Wednesday, April 9. This year’s theme, “Kicking the HAB-bit Together: Collaborating to Get Ahead of HABs,” highlights the growing shift from reactive, crisis-based approaches to proactive, collaborative, and sustainable solutions for managing harmful algal blooms. The summit will feature a dynamic lineup of speakers addressing emerging trends and timely topics in the HAB field. Among the presenters is Princeton Hydro’s Aquatics Project Manager and Environmental Scientist, Patrick Rose, who will be speaking about an exciting new Research & Development initiative funded by the U.S. Army Corps of Engineers’ Engineer Research and Development Center (ERDC). His presentation will explore the evaluation of innovative treatment strategies—both proactive and reactive—aimed at cost-effectively controlling near-shore HABs.

Get more info and register.

April 12: Free Workshop - Learn How to Create a Rain Garden

Join the Lower Makefield Township Environmental Advisory Council for a free, open-to-the-public lecture on how to build a rain garden. As part of the Advisory Council’s Environmental Lecture Series, this 1-hour workshop, led by Princeton Hydro President Geoffrey M. Goll, PE, will explore the environmental benefits of rain gardens and provide practical tips on how to create one on your own property. The event will be held in Yardley, PA, at the LMT Administrative Building, 1100 Edgewood Road.

Learn more about the Environmental Advisory Council.

April 16: New Jersey Invasive Species Strike Team Conference

Presented by the Friends of Hopewell Valley Open Space and hosted by Duke Farms, we are excited to participate in the 18th Annual New Jersey Invasive Species Strike Team Conference. Considered the most comprehensive state-wide forum on invasive species, the conference encompasses insights from both academic research and field experience, and features practical demonstrations by land stewards in addition to formal presentations. This year, presentation topics include "Pest and Pathogens of New Jersey," "Implementation of Invasive Weed Control Program," and "Assessing Deer Population Densities in Northern NJ." Princeton Hydro is sponsoring the conference and exhibiting. We hope to see you there!

Get more info and register.

April 22: Colorado Lake and Reservoir Management Association Spring Luncheon

CLRMA and its members are dedicated to managing, studying, restoring, and protecting Colorado’s lakes and reservoirs. On April 22, CLRMA will host its Annual Spring Luncheon, a lunch-and-learn event where participants will explore lake restoration projects and get a detailed look at CLRMA’s water resource restoration efforts. The program features Chris Mikolajczyk, CLM—CLRMA President-Elect and Princeton Hydro Senior Manager of Aquatics—presenting “Lake Management 101.” Princeton Hydro is proud to sponsor this event! Click here to learn more about CLRMA.

Get more info and register.

May 2 & 3: The New York State Federation of Lake Associations (NYSFOLA) Annual Conference

Founded in 1983, NYSFOLA represents over 200 lake associations across New York. This year, the organization celebrates its 42nd annual conference at the Fort William Henry Hotel and Conference Center in Lake George. In the theme “Back to the Future: Old Lake Issues and New Solutions,” the event features panel discussions, workshops, networking opportunities, and an exhibitor hall. Princeton Hydro is leading two workshops:

Chris Mikolajczk, CLM, Senior Manager of Aquatics, presents "Old Lake Issues? The EPA National Lakes Assessment (2000s) and Funding New Experimental Solutions."
Dr. Fred Lubnow, Senior Technical Director of Ecological Services, presents "Internal Loading: Updated Solutions for an Old and Increasing Problem for Lakes."

Our team is honored to sponsor this event, eager to share our expertise and gain important insights, and looking forward to connecting with fellow lake management professionals throughout the conference.

Get more info and register.

May 2: Coastal Resilience in NJ - Funding Through Implementation

The Society of American Military Engineers (SAME) New Jersey Post invites you to its annual Coastal Resilience in NJ event—a full-day program focused on innovative strategies, funding pathways, and actionable solutions for building resilient coastal communities. Held at the Rutgers EcoComplex in Bordentown, NJ from 8 AM - 4:30 PM, the event features expert-led presentations, a panel on urban resilience, a U.S. Army Corps of Engineers briefing, and discussions with leaders from local, state, and federal agencies, NGOs, and academia. The day concludes with a complimentary happy hour, including the fresh oyster bar from Barnegat Oyster Collective, which is back by popular demand. Princeton Hydro is a Gold Sponsor for the event and exhibiting—we hope to see you there!

Get more info and register.

May 9: New Jersey Sustainability Summit

Sustainable New Jersey collaborates with state agencies, nonprofits, academia, and industry to identify best practices and award certification to communities that meet rigorous sustainability standards. The New Jersey Sustainability Summit brings together leaders from the political, private, and public sectors, all dedicated to building a more sustainable future. This dynamic one-day forum, held on Friday, May 9, at Bell Works in Holmdel, NJ, highlights innovative projects, key successes, and lessons learned from across the state.

Get more info and register.

May 19 - 21: Choose Clean Water Conference

Every year, the Choose Clean Water Conference gathers individuals from local, state, and national nonprofits, elected officials, government agencies, and businesses within the Chesapeake Bay Watershed to discuss ways these different sectors can work together toward our collective goal—clean water. This conference is an excellent opportunity for Coalition members to learn about innovative restoration approaches from experts, engage in discussions with other attendees from different parts of the watershed, and see on-the-ground examples of local work. This year's conference takes place at the Hotel Madison in Harrisonburg, Virginia.

Get more info and register.

IN CASE YOU MISSED IT: EXCITING EVENTS FROM EARLIER THIS YEAR

The Watershed Institute's 8th Annual New Jersey Watershed Conference

This year's Annual Conference, held in February, centered on the theme “Resiliency through Restoration” and explored collaborative strategies for building climate-resilient communities. Sessions focused on restoring degraded watersheds through both nature-based and engineered solutions to address pressing and future water-related challenges, including flooding, harmful algal blooms, and drought. As a proud sponsor, Princeton Hydro exhibited at the event and contributed expertise through two presentations:

"A Multi-Disciplinary Approach to Understanding a Proven Method for Holistically Improving Watersheds by Enhancing Cattle Ranch Performance" – Presented by Senior Wildlife Biologist Mike McGraw, CSE, QAWB, ACE.
"A Guide to Implementing Stormwater Retrofits and BMPs" – Co-presented by Chris Sotiro, Policy & Program Coordinator at New Jersey Future; Dr. Clay Emerson, PE, CFM, Senior Technical Director at Princeton Hydro; and Erin Bennett, Princeton Hydro’s Proposals & Marketing Manager.

32nd Annual FEMA National Dam Safety Program Technical Seminar

The 32nd Annual FEMA NDSPTS took place in February at the National Disaster & Emergency Management University in Emmitsburg, Maryland. The annual event brought together over 300 dam safety professionals to discuss emerging challenges, advancements, and collaborative strategies for maintaining the nation’s dam infrastructure. This year’s seminar introduced a dynamic new format designed to enhance learning and collaboration, blending training sessions, workshops, and traditional presentations for a comprehensive approach to dam safety challenges and innovations. Princeton Hydro President Geoffrey M. Goll, PE, presented "Streamlining the NEPA Process and Focusing on Adaptive Management for Dam Removal," sharing insights on improving project efficiency and resilience.

Stay tuned to our blog for more event details!

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Welcome to the latest edition of our “A Day in the Life” blog series! Today, we’re diving into the world of lake management, biological sampling, and watershed restoration with Patrick Rose, an Environmental Scientist and Project Manager in Princeton Hydro’s Aquatics Division.

Since joining Princeton Hydro in 2019, Pat has played a key role in a range of aquatic projects, from water quality monitoring to fisheries management. His expertise spans in-lake and watershed management, including cyanobacteria monitoring, invasive species control, and statistical analysis of water quality and biological data. Pat has contributed to major initiatives such as developing Nine Element Watershed Implementation Plans for two of New Jersey’s largest lakes, crafting cyanotoxin mitigation strategies, and conducting lake phosphorus assessments to guide restoration efforts.

His journey into aquatics began with a transformative summer course at Lake Atitlán in Guatemala, which ignited his passion for watershed science. After earning both an undergraduate degree in Environmental Science and a graduate degree in Lake Management from SUNY Oneonta, he spent a year with AmeriCorps in Knoxville, Tennessee, working on water quality initiatives with high school students and government agencies. He later completed a co-op managing aquatic invasive plants in the Pacific Northwest before joining Princeton Hydro as an intern in 2016, transitioning to a full-time role in 2019.

Now, let’s step into Pat’s boots (or waders) and see what a typical day in the field looks like, starting with the essential preparations before heading out on the water.

Preparing Equipment and Safety Gear for a Day in the Field

Pat’s days are as varied as the ecosystems he studies. When fieldwork is on the schedule, his morning starts early, often before sunrise. The first step is checking the weather forecast to anticipate any conditions that could impact the day’s work.

Next, he heads to the Princeton Hydro field office, where the team’s trucks, boats, and specialized aquatics equipment, such as the Truxor DM, Marsh Master 2MX-KC-FH, and Airboat, are stored. Before hitting the road, Pat and his team conduct a thorough inventory, gathering all necessary tools and performing critical equipment checks and calibrations.

[gallery link="none" size="medium" columns="2" ids="17135,17131"]

“It’s important to ensure that all of the equipment is accounted for and in good working order before leaving for the project site because the site can be a few hours away,” Pat explains. “We calibrate our water quality meters every morning to ensure that all of our measurements are accurate.”

Even for routine monitoring projects at familiar sites, planning is essential. Some projects require full-day or multi-day sampling efforts, especially when testing large waterbodies at multiple locations. A well-structured plan helps keep the process efficient while allowing flexibility for unexpected challenges. As part of the Health and Safety Plan (HASP), the team also reviews emergency protocols, including identifying key points of contact and the nearest hospital in case of an emergency.

If the project involves a boat, the team double-checks all required safety gear, including life jackets, fire extinguishers, flares, air horns, and first aid kits. They also bring protective gloves, especially when working in areas where harmful algal blooms (HABs) are suspected. To prevent the spread of invasive species, they follow strict decontamination protocols, washing boats at the end of each field day.

With the gear packed, safety checks complete, and a solid plan in place, it’s time to hit the water and begin the day’s fieldwork.

On the Water: Conducting Water Quality Monitoring in the Field

Once Pat and the project team arrive at the site, they prepare the boat for launch and conduct a final safety check before heading out on the water.

While they may have specific sampling locations identified in advance, the team remains vigilant for any additional signs of water quality issues, such as HABs, invasive aquatic weeds, or other ecological disturbances. They also take note of positive indicators of a healthy ecosystem, including native fish species, beneficial aquatic plants, and diverse wildlife activity.

Decisions about field measurements at each location are guided by the client’s directives, an approved lake management plan, and any known or suspected water quality challenges the team is working to mitigate.

One of the primary tools Pat relies on is the multiprobe water quality meter, which allows him to efficiently measure key water quality parameters, including temperature, dissolved oxygen, pH, and specific conductivity. This instrument provides real-time data, enabling the team to assess conditions on-site and make informed decisions about sampling and management strategies.

Watch this video where Pat demonstrates how to use a multiprobe water quality meter: [embed]https://youtu.be/6J1oV1qdh4k[/embed]

In addition to using the multiprobe, the team collects water samples for laboratory analysis, testing for conductivity, turbidity, nutrient levels, and, in some cases, fecal coliform bacteria. Shoreline assessments are also a crucial part of monitoring efforts. Pat and his team walk the banks to document erosion, bank stability, and native plant growth, recording their observations through field notes and photo documentation.

With data collection complete, the next step is analyzing the results and translating the findings into actionable insights.

Exploring Lake Hopatcong: A Case Study in Trout Habitat Monitoring

One of the projects Pat is most involved with is the trout habitat monitoring study at Lake Hopatcong, New Jersey’s largest lake. The lake’s trout fishery is a major recreational attraction, drawing anglers from across the region and contributing to the local economy. However, an analysis of 30 years of water quality data revealed a concerning trend—rising surface water temperatures, which can negatively impact trout habitat and survival rates.

[gallery columns="2" link="none" ids="17136,17132"]

In response to these concerns, the Lake Hopatcong Commission (LHC) Trout Committee was formed in 2021. Working in collaboration with the Lake Hopatcong Foundation and the Knee-Deep Club, the committee launched a three-year trout tagging study to evaluate the lake’s ability to support a sustainable trout population. Princeton Hydro is responsible for all technical aspects of the study, including data collection, analysis, and reporting, with funding provided by the New Jersey Highlands Council.

To understand how habitat conditions fluctuate during peak summer stress periods, Pat and his team conducted weekly sampling in July and August at both deep-water stations and nearshore areas. “We take GPS measurements at every site around the shoreline where we measure temperature and dissolved oxygen,” Pat explains. “Then, we send the locations to our GIS team so they can create detailed habitat maps.”

The study focuses on two key elements:

1. Deep-Water Sampling:

Pat and his team collect in-situ water quality profiles at five deep-water stations across the lake.
Using a calibrated multiprobe water quality meter, they take readings at 1-meter intervals from the surface to the lake bed, refining the intervals near habitat boundaries to improve accuracy.
Core parameters include temperature and dissolved oxygen, with additional data on specific conductance and pH.
These measurements help define the upper habitat limit (controlled by temperature) and the lower limit (governed by dissolved oxygen levels).

2. Nearshore & Stream Sampling:

Pat’s team surveys potential trout refuge areas along the shoreline, where trout might seek cooler, oxygen-rich waters in late summer.
Over the course of the study, they have sampled 116 locations in 2022 and 110 locations in 2023, gathering in-situ temperature and dissolved oxygen data to identify possible refuge sites.
They also measure these parameters in major stream inlets, assessing sources of cooler water that could support trout habitat.

By collecting and analyzing this data, the study provides critical insights into how trout habitat is changing and what can be done to protect and enhance suitable conditions for this important fishery. Click here to read more about the Lake Hopatcong Trout Habitat and Tagging Study.

Building Partnerships for a Thriving Lake

[caption id="attachment_17219" align="alignright" width="444"]

Floating Wetland installation at Lake Hopatcong[/caption]

Managing aquatic projects isn’t just about addressing challenges—it’s about bringing people together to protect and enhance vital ecosystems. Successful water quality restoration efforts thrive on collaboration, education, and community engagement.

“Lakes serve many purposes, and different groups value different aspects,” Pat explains. “Fishermen often want sufficient aquatic vegetation for a healthy fishery, while boaters and swimmers typically prefer little to no vegetation. The best way to ensure a balanced approach is to involve all stakeholders in the conversation.”

At Lake Hopatcong, Pat and his team work closely with the Lake Hopatcong Commission, Lake Hopatcong Foundation, local government entities, volunteers, and community members. Regular communication and engagement efforts ensure that project goals reflect the needs of the entire community. By fostering open dialogue, gathering feedback, and sharing scientific insights, they aim to inspire stewardship and long-term investment in the lake’s health.

Looking Ahead

As Pat continues to make meaningful contributions to Princeton Hydro’s mission, he remains dedicated to expanding his expertise and leadership in lake and watershed management. He thrives on the balance between technical fieldwork, client collaboration, and mentorship, and he’s always eager to take on new challenges in aquatic science.

For students interested in the field, Pat emphasizes the value of hands-on experience: “Take as many courses as you can in aquatics and related fields,” he advises. “Seek out internships, research opportunities, or assist graduate students and professors. Real-world experience is invaluable.”

With passionate professionals like Pat leading the way, the future of lake management and watershed restoration is in good hands.

Click here to read the previous "Day in the Life" blog series edition featuring Tara Srinivasan, Environmental Scientist and GIS Analyst, and stay tuned for more behind-the-scenes stories from our talented team!

[post_title] => A Day in the Life: Managing Lakes & Monitoring Water Quality with Pat Rose [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => a-day-in-the-life-pat-rose [to_ping] => [pinged] => [post_modified] => 2025-07-11 10:43:41 [post_modified_gmt] => 2025-07-11 10:43:41 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=17218 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [9] => WP_Post Object ( [ID] => 16986 [post_author] => 1 [post_date] => 2025-03-14 02:21:48 [post_date_gmt] => 2025-03-14 02:21:48 [post_content] =>

The removal of Paulina Lake Dam marks a significant step in restoring the Paulins Kill River. With the spillway demolished, dredging completed, and the trail bridge stabilized as of October 2024, the transformation has been remarkable. A new project video now captures this rapid evolution and celebrates the progress made.

Watch the Latest Project Video

We invite you to watch the new video documenting the removal process for the Paulina Lake Dam. The video's captivating aerial footage, taken by The Nature Conservancy (TNC) Volunteer Drone Team before demolition and by Princeton Hydro throughout and after the removal process, showcases the dramatic transformation of the site. The video walks viewers through each removal phase, from initial notching to full demolition, while highlighting what’s next in the ongoing Paulins Kill River restoration effort.

Click below to watch it now: [embed]https://www.youtube.com/watch?v=VDbe6oUPEOI[/embed]

A Legacy of Connectivity and Restoration

The removal of Paulina Lake Dam is part of a broader effort to restore the Paulins Kill River and its ecosystem. Since 2019, four dam removals, including Columbia Lake’s remnant and main dams (2019), County Line Dam (2022), and Paulina Lake Dam (2024), have reconnected 45 miles of river habitat, allowing native species like brook trout and migratory fish to thrive.

Beyond enhancing aquatic and terrestrial connectivity, the dam’s removal mitigates safety hazards, improves water quality, and expands recreational opportunities for the community. It also contributes to ongoing wetland and riparian zone restoration, including the reforestation of the floodplain and protection of critical habitats.

What’s Next?!

While the dam is gone, restoration efforts are not quite over. In early Spring, the project team will initiate the third and final project phase by visiting the site to assess and plan for adaptive management work, which will commence in July 2025. During this final push, the project team will enhance habitat features, stabilize riverbanks in select locations, and plant native trees, ensuring a thriving ecosystem for years to come. Stay tuned for more updates as we continue to witness the transformation of the Paulins Kill.

Click here to learn more about the project. [post_title] => Paulina Lake Dam Removal Update: Celebrating Progress and Looking Ahead [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => paulina-lake-dam-new-video [to_ping] => [pinged] => [post_modified] => 2025-07-11 10:46:43 [post_modified_gmt] => 2025-07-11 10:46:43 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=16986 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) [10] => WP_Post Object ( [ID] => 15958 [post_author] => 1 [post_date] => 2024-11-13 19:30:21 [post_date_gmt] => 2024-11-13 19:30:21 [post_content] =>

We’re thrilled to announce that Princeton Hydro’s Senior Manager of Aquatics and Certified Lake Manager, Chris L. Mikolajczyk, has been appointed as President-Elect of the Colorado Lake and Reservoir Management Association’s (CLRMA) 2025 Board of Directors. This appointment highlights Chris’s dedication to lake management and his commitment to advancing aquatic resource conservation efforts.

CLRMA, which was founded in 1996, brings together citizens, scientists, and professionals with a shared passion for protecting Colorado’s lakes and reservoirs. The annual CLRMA board election took place on October 22, 2024 during the organization’s fall conference. This event, a cornerstone for water resource professionals and conservation advocates throughout Colorado, fosters connections and knowledge-sharing on aquatic ecosystem health, water quality, and the legal and financial aspects of lake management.

Chris will serve as President-Elect for a one-year term, after which he will become President. In this role, Chris will work closely with CLRMA members to plan and host educational events, including spring and fall conferences, and summer gatherings, such as lake appreciation days and family-friendly workshops. With his extensive experience in lake management, as well as a term as the President of the North American Lake Management Society (NALMS), Chris is well-prepared to contribute to CLRMA’s mission of protecting and enhancing Colorado’s lakes and reservoirs.

“It’s an honor to join the CLRMA board and have the opportunity to contribute to the sustainability of Colorado’s valuable water resources,” said Chris. “I look forward to collaborating with the CLRMA team to advance our shared mission of fostering resilient, healthy lakes and reservoirs.”

Chris joined Princeton Hydro in 1999 and has spent the past 25 years managing and restoring lakes and aquatic ecosystems. Over his career, he has led numerous lake management and water quality projects across the U.S. and has played an active role in professional organizations such as NALMS. Chris’s experience includes lake diagnostics, watershed management planning, stormwater quality modeling, and leading various aquatic restoration initiatives. He brings a wealth of knowledge to CLRMA and is excited to expand his involvement in Colorado’s lake conservation community.

Alongside Chris, the newly elected 2025 CLRMA Board members include:

President: Erin Stewart
Treasurer: Cindy Brady
Director: Alex Bentz
Director (1-year term): Caleb Owen
Director at Large: Steve Lundt

Additional CLRMA Board members who will continue their roles include Suresh Niraula (Past President), Meghan Chantler (Secretary), Claire Farmer (Director), and James Eklund (West Slope Director).

Together, the CLRMA board provides a forum for sharing expertise and solutions on issues facing Colorado’s lakes, from water quality and ecosystem resilience to watershed protection.

Princeton Hydro is proud to support Chris in his work with CLRMA as we continue our mission of delivering sustainable, science-based solutions for water resource management and lake restoration across the country. This mission has recently extended to Colorado, where we completed our first project—a bathymetric assessment of Fairplay Beach Reservoir in partnership with the Town of Fairplay. This project involved mapping the reservoir’s underwater landscape to support its conservation, adding critical data for future restoration and management efforts in this beautiful high-altitude ecosystem.

As we look ahead, Princeton Hydro is excited to bring our expertise to Colorado’s unique aquatic environments and partner with local communities and conservation organizations to protect the state’s natural resources. Stay tuned for more updates as we continue exploring new waters and contributing to sustainable resource management across the region.

For more information about CLRMA and its work in protecting Colorado’s lakes and reservoirs, visit their website here.

Photo by: Chris L. Mikolajczyk, CLM. [post_title] => Princeton Hydro’s Chris Mikolajczyk Appointed President-Elect of Colorado Lake and Reservoir Management Association Board [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => princeton-hydros-chris-mikolajczyk-appointed-president-elect-of-colorado-lake-and-reservoir-management-association-board [to_ping] => [pinged] => [post_modified] => 2025-07-17 15:38:34 [post_modified_gmt] => 2025-07-17 15:38:34 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?p=15958 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 0 [filter] => raw ) ) [post_count] => 11 [current_post] => -1 [before_loop] => 1 [in_the_loop] => [post] => WP_Post Object ( [ID] => 18636 [post_author] => 1 [post_date] => 2025-11-10 17:09:04 [post_date_gmt] => 2025-11-10 17:09:04 [post_content] =>

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

Photo by the Lake Hopatcong Commission[/caption]

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Posted on November 10, 2025 by Princeton Hydro

Q: Rebecca, can you provide an overview of the Town of Mina and the core values the Town prioritizes?

A:

Q: Ed, can you tell us about the history of FLWF and how it evolved into the organization it is today?

A:

Q: Ed, what are the core values that guide FLWF, and which current projects highlight those values in action?

A:

Q: Rebecca, what are some of the initiatives the Town of Mina is leading to support ecological uplift, water quality improvements, and environmental stewardship?

A:

Q: Ed, reflecting on past collaborations, can you highlight a project or two that FLWF has worked on with Princeton Hydro?

A:

Q: Rebecca, is there anything you'd like to add about the Town’s collaboration with Princeton Hydro?

A:

Q: Ed, for those interested in supporting FLWF’s mission, how can individuals get involved and contribute to your efforts?

A:

To close out the conversation, we asked Rebecca and Ed if there was anything else they’d like to share.

1. Get to Know Your Lake

2. Join the Secchi Dip-In

3. Create and Share Lake-Inspired Content

4. Take Action and Give Back

Historical Management of Harveys Lake

Innovative Solutions for Stormwater Nutrient Reduction

Measuring Success: Sampling, Monitoring, & Key Findings

Monitoring Set-Up

Data Analysis & Pollutant Load Modeling

Key Findings

Engaging the Community & Enriching the Landscape

A Scalable, Shareable Solution

What You’ll Discover Inside the StoryMap

The Lake Luxembourg Conservation Pool Restoration Project

The StoryMap at a Glance: A Comprehensive Interactive Experience

March 22: World Water Day

March 25: Save the Environment of Moorestown Annual Meeting

March 29: 2025 Watershed Congress

March 29: NJCOLA Member Meeting - Learn About the Latest in HAB Management

April 9: 6th Annual Harmful Algal Bloom Summit

April 12: Free Workshop - Learn How to Create a Rain Garden

April 16: New Jersey Invasive Species Strike Team Conference

April 22: Colorado Lake and Reservoir Management Association Spring Luncheon

May 2 & 3: The New York State Federation of Lake Associations (NYSFOLA) Annual Conference

May 2: Coastal Resilience in NJ - Funding Through Implementation

May 9: New Jersey Sustainability Summit

May 19 - 21: Choose Clean Water Conference

IN CASE YOU MISSED IT: EXCITING EVENTS FROM EARLIER THIS YEAR

The Watershed Institute's 8th Annual New Jersey Watershed Conference

32nd Annual FEMA National Dam Safety Program Technical Seminar

Stay tuned to our blog for more event details!

Preparing Equipment and Safety Gear for a Day in the Field

On the Water: Conducting Water Quality Monitoring in the Field

Exploring Lake Hopatcong: A Case Study in Trout Habitat Monitoring

Building Partnerships for a Thriving Lake

Looking Ahead

Watch the Latest Project Video

A Legacy of Connectivity and Restoration

What’s Next?!

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