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Princeton Hydro Committed to improving our ecosystems, quality of life, and communities for the better.

Princeton Hydro was formed in 1998 with the specific mission of providing integrated ecological and engineering consulting services. Offering expertise in aquatic and terrestrial ecology, water resources engineering, and geotechnical investigations, our staff provides a full suite of environmental services. Our team has the skill sets necessary to conduct highly comprehensive assessments; develop and design appropriate, sustainable solutions; and successfully bring those solutions to fruition. As such, our ecological investigations are backed by detailed engineering analyses, and our engineering solutions fully account for the ecological and environmental attributes and features of the project site. We take great pride in our reputation with both clients and regulators for producing high-quality projects over a wide variety of service areas; doing so requires a highly skilled team committed to keeping abreast with current research, technology and regulations. Our capabilities are reflected in our award-winning projects that consistently produce real-world, cost-effective solutions for even the most complex environmental problems.

Join Princeton Hydro's Senior Technical Director of Engineering, Clay Emerson, PhD, PE, CFM, this Friday for “Stormwater...
10/14/2026

Join Princeton Hydro's Senior Technical Director of Engineering, Clay Emerson, PhD, PE, CFM, this Friday for “Stormwater Design Myths and Misconceptions,” a free webinar hosted by The Watershed Institute!

Clay will join Gabe Mahon, PE, of the New Jersey Department of Environmental Protection (NJDEP) to examine common issues encountered when reviewing stormwater management designs and discuss considerations for improving design submissions.

✅ Register now: https://shorturl.at/deB6O

🌧️ Stormwater Design: Myths & Misconceptions 🌧️

Are you ready to rethink how we manage stormwater in New Jersey? Join us for a FREE, virtual Technical Fridays session on October 16 at 12 p.m. as we bust common myths and reveal the realities of stormwater design!

💡 Learn from top experts:
🔹 Dr. Clay H. Emerson, Senior Technical Director, Princeton Hydro
🔹 Gabe Mahon, Bureau Chief, NJDEP Division of Watershed Protection and Restoration
🔹 Moderated by Mike Pisauro, Esq., The Watershed Institute

Why attend?
✔️ Discover how climate change is reshaping rainfall and flooding in NJ
✔️ Get practical tips for engineers, planners, developers, and advocates
✔️ Understand the MS4 permit and how better designs can speed up approvals
✔️ Earn 1.5 PE & CFM CEUs (additional credits available for purchase)

This is your chance to ask questions, connect with peers, and make a real impact on your community’s water future. Can’t make it live? All registrants will receive the recording!

🔗 Register now—spaces are limited!
Questions? Contact Pri Oliveira at [email protected]

2,318 native plants in the ground! We’re proud to be part of this collaborative effort to help protect Lake Hopatcong an...
10/14/2026

2,318 native plants in the ground! We’re proud to be part of this collaborative effort to help protect Lake Hopatcong and support healthier habitat in the watershed.

A huge thank-you to all of the volunteers who came out and made this planting possible, and to our project partners for bringing everyone together! 🌱👏

Yesterday was a great day for the Colorado lake management community!Princeton Hydro’s Chris Mikolajczyk, CLM, President...
10/14/2026

Yesterday was a great day for the Colorado lake management community!

Princeton Hydro’s Chris Mikolajczyk, CLM, President of the Colorado Lake and Reservoir Management Association, led a successful CLRMA Fall Conference and presented a session on the North American Lake Management Society Certified Lake Manager Program.

We’re incredibly proud of Chris and the work he continues to do with CLRMA, and it was a pleasure for Princeton Hydro to support this year’s conference.

Congratulations to Chris and the entire CLRMA team on a great event!

Supporting local environmental action starts with supporting the organizations working directly in our communities! 🌿On ...
10/14/2026

Supporting local environmental action starts with supporting the organizations working directly in our communities! 🌿

On October 19, Princeton Hydro President Geoffrey M. Goll, PE, a proud Trustee of the Association of NJ Environmental Commissions (ANJEC), will be at ANJEC’s Dine & Donate at Triumph Red Bank, alongside fellow ANJEC Board member Raymond LeChien.

Stop by to meet Geoff and Raymond, learn more about ANJEC and the important role local environmental commissions play throughout New Jersey, and enjoy dinner or drinks while supporting environmental protection across the state.

C’mon Out and Support ANJEC
~ DINE & DONATE ~
Monday, October 19th
4:00 - 9:00 p.m.
Triumph Restaurant & Brewery
Red Bank, NJ

View Triumph Red Bank Menu here:
—>https://www.triumphbrewing.com/wp-content/uploads/redbank-menu.pdf

Join us at the 2026 North Jersey Rivers Conference!Princeton Hydro is proud to sponsor this year’s conference, hosted by...
10/13/2026

Join us at the 2026 North Jersey Rivers Conference!

Princeton Hydro is proud to sponsor this year’s conference, hosted by the New Jersey Highlands Coalition at Centenary University in Hackettstown, NJ. Connect with professionals and advocates working to protect northern New Jersey’s rivers, streams, and watersheds while exploring the latest research, restoration successes, conservation challenges, and practical strategies for protecting our water resources.

Stop by the Princeton Hydro exhibitor table to meet our team and learn more about our work in river restoration, watershed management, and aquatic resource protection throughout New Jersey and beyond.

✅Register today: https://shorturl.at/3BhYH

In celebration of World Migratory Bird Day, Princeton Hydro’s Senior Wildlife Biologist Michael McGraw, CSE, QAWB, ACE l...
10/12/2026

In celebration of World Migratory Bird Day, Princeton Hydro’s Senior Wildlife Biologist Michael McGraw, CSE, QAWB, ACE led a fall migration bird walk at Garrett Williamson in Newtown Square, PA.

Bringing together experienced birders, newcomers, and nature enthusiasts of all ages, the walk explored the property’s diverse habitats and recorded an impressive 45 bird species, including Merlin, Bay-breasted Warbler, Cape May Warbler, and Savannah Sparrow.

The morning also included a special recognition of Garrett Williamson’s location within the Ridley Creek State Park Important Bird Area, with Janet Krevenas of Bird Town PA – Newtown Square and Vice Chair of the Newtown Township Environmental Advisory Council presenting an Important Bird Area sign alongside members of the Garrett Williamson community.

Mike has been leading spring and fall migration walks at Garrett Williamson for more than six years, and we’re proud to see the connections he continues to build through a shared appreciation for birds, biodiversity, and the natural world.

Thank you to Garrett Williamson, CRC Watersheds, Bird Town PA – Newtown Square, and Newtown Township EAC & Bird Town for helping bring the community together for another great walk!

📸 Photography by Amelia “Mimi” Zammarelli.

Princeton Hydro is proud to sponsor and exhibit at this year’s Villanova Urban Stormwater Partnership Stormwater Symposi...
10/12/2026

Princeton Hydro is proud to sponsor and exhibit at this year’s Villanova Urban Stormwater Partnership Stormwater Symposium, “Propelling Solutions,” hosted by the Villanova Center for Resilient Water Systems at Villanova University!

Be sure to catch Richard Farella, PE, CFM, Senior Water Resources Engineer at Princeton Hydro, presenting “Urban Flood & Habitat Resiliency in the Lower Darby Creek Watershed: A Case Study in Modeling and Community Engagement.”
Richard will explore how watershed modeling, habitat enhancement, and stakeholder engagement can work together to address flood risk while supporting ecological resilience.

Attending the symposium? Stop by our exhibit, say hello to the Princeton Hydro team, and join Richard for his presentation! We hope to see you there.

Tomorrow, the Colorado Lake and Reservoir Management Association (CLRMA) will bring lake and water resource professional...
10/12/2026

Tomorrow, the Colorado Lake and Reservoir Management Association (CLRMA) will bring lake and water resource professionals together for its Fall Conference, “Doing More with Less: A Lake Manager’s Toolbox on a Budget.”

Princeton Hydro’s Chris Mikolajczyk, CLM, President of CLRMA, will welcome attendees to the conference and later lead a session introducing the North American Lake Management Society Certified Lake Manager Program.

The day will explore practical approaches to lake management, water quality, and working within real-world resource constraints, with plenty of opportunity for professionals to exchange ideas and learn from one another.

We’re glad to be participating and supporting Chris as he helps lead this year’s program. If you’re attending, we look forward to seeing you there!

Events   Photo credit: Tevin Trinh Register for the 2026 Fall Conference | Tuesday, October 13th | 10:00 am - 3:00 pm Doing More with Less: A Lake Manager’s Toolbox on a Budget Venue: The Denver Taft Offices [675 Fifteenth Street Suite 2300 Denver, CO 80202] [Allow extra time for finding parking]...

Princeton Hydro recently partnered with the Borough of Florham Park to install two floating wetland islands at Spring Ga...
10/11/2026

Princeton Hydro recently partnered with the Borough of Florham Park to install two floating wetland islands at Spring Garden Lake, supporting ongoing efforts to improve water quality and enhance aquatic habitat.

Planted with native vegetation, these islands mimic natural wetlands, helping remove excess nutrients from the water while creating habitat for aquatic wildlife.

Our Aquatic Ecology team planted, launched, and anchored the islands, bringing this nature-based solution to life!

We're proud to continue our partnership with the Borough of Florham Park, working together since 2002 to support the long-term health and resilience of Spring Garden Lake.

Watch our team in action and learn more about the project in our latest blog.

The Borough of Florham Park and Princeton Hydro recently completed the installation of two floating wetland islands (FWIs) at Spring Garden Lake, advancing ongoing efforts to improve water quality and enhance aquatic habitat within this valued community resource. The project was implemented as part....

This fall, Princeton Hydro’s field team has been hard at work at Swartswood State Park, supporting invasive species mana...
10/10/2026

This fall, Princeton Hydro’s field team has been hard at work at Swartswood State Park, supporting invasive species management efforts led by the New Jersey Department of Environmental Protection (NJDEP).

Our team recently assisted with targeted seed-head removal of invasive Phragmites australis (common reed), manually clipping and collecting seed heads to help limit their spread and support long-term wetland restoration.

We’re proud to support NJDEP’s ongoing efforts to protect New Jersey’s wetlands and promote healthier, more resilient habitats!

Take a behind-the-scenes look at our field crew in action and learn more about this important work in our latest blog.

This fall, Princeton Hydro’s field team has been hard at work at Swartswood State Park, supporting ongoing invasive species management efforts led by the New Jersey Department of Environmental Protection (NJDEP). The work focuses on controlling Phragmites australis (common reed), an aggressive inv...

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35 Clark Street
Trenton, NJ
08611

Opening Hours

Monday 8:30am - 5:30pm
Tuesday 8:30am - 5:30pm
Wednesday 8:30am - 5:30pm
Thursday 8:30am - 5:30pm
Friday 8:30am - 5:30pm

Telephone

+19082375660

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