(h)EELing Our Waterways, One (Eel) Mop At A Time

By LRWP Summer 2024 Research Intern Maya Fenyk

This spring’s eel project has been driven by the incredible support and active participation of our community. With thanks to the NY/NJ Harbor & Estuary Program for Project Support, and thanks to all community members who lent a hand: your engagement and dedication have been crucial to our efforts in supporting and h-EEL-ing the American glass eel population.

The LRWP believes that by combining scientific research and community action we strengthen our Lower Raritan community’s connection to local waterways while also highlighting our links to the broader aquatic ecosystem, even across vast distances. Our Spring 2024 eel story suggests far-reaching implications beyond our watershed’s borders.

Why Now? The Ord-EELs Facing the Anguilla rostrata (American Glass Eel) and Their App-EEL As A Symbol of Cultural and Environmental Harmony 

The eels are coming! The eels are coming! We here in the Lower Raritan Watershed get to play Paul Revere every time a new crop of juvenile anguilla rostrata, or as they are affectionately known “elvers”, navigate from the Sargasso Sea in the North Atlantic to our local rivers, streams, and estuaries in spring. As one can imagine, an over 1000 mile trek is dangerous for all animals big and small. However, the American glass eels face some unique challenges, or should I say ord-EELs, to get to their (almost) forever home. Unfortunately, the American glass eel is designated as a threatened species by the International Union of Conservation of Nature. This is due to a wide range of problematic issues, including habitat loss, overfishing, pollution, and barriers to migration such as dams and culverts. Although conservation efforts including habitat restoration, regulation of fishing practices, and monitoring of glass eel populations are increasing, there are still significant threats.

The American Glass Eel is particularly vital, serving as both an indicator species and a keystone species across diverse environments, with significant physical and cultural implications. A keystone species is one that boxes outside its weight class, contributing much more to the ecosystem than would be expected. Glass eels specifically regulate prey populations, contribute to nutrient cycling, and serve as indicators of ecosystem health. Though we are familiar with the terminology of a keystone species in an environmental context, we can also use it to refer to species that have integral roles in cultural contexts, specifically within indigenous knowledge systems. 

American glass eels hold an essential place in the cultural heritage of Maine’s Passamaquoddy tribe. Elder Donald Socotomah says: “The eels have been part of our traditions forever. We have them in our legends. We have all kinds of stories, thousands of years old.” The interconnectedness of eels with the wider Passamaquoddy culture showcases a very important narrative of community and intergenerational conveyance. 

Traditionally, the Passamaquoddy people have relied on the abundance of glass eels as a vital source of sustenance, harvesting them using techniques passed down through generations. Elders within the community play a central role in teaching younger members about the importance of glass eels and the traditional methods of harvesting and preparation. During the spring migration season, members of the Passamaquoddy Tribe gather along the rivers and estuaries of Maine, awaiting the arrival of glass eels. The harvesting of eels becomes a communal activity, bringing together families and clans to celebrate the bounty of nature and reaffirm their cultural identity. Once harvested, glass eels are prepared in accordance with traditional recipes and culinary practices unique to the Passamaquoddy culture. The threatened state of American eels has significantly impacted the cultural traditions of the Passamaquoddy people. To help secure the continuance of the eel population and their cultural traditions, the Passamaquoddy people have developed innovative eel aquaculture practices, and were recently awarded a $4.3 million dollar grant by the USDA Rural Development department as a contribution to their efforts. 

However, the interplay of eels within the Passamaquoddy tribe transcends their role as food. Glass eels hold spiritual significance for the Passamaquoddy people, serving as messengers of balance and harmony within the natural world. The health of eel populations is seen as a reflection of the overall well-being of the ecosystem and the interconnectedness of all living beings. This message of harmony and interconnection is not only beautiful but also applicable to the habitat connectedness that our catadromous friends exemplify. 

Eel migrations between freshwater and marine environments facilitate the transfer of energy and nutrients, connecting different habitats and supporting biodiversity. In this context, the concept of swimways becomes particularly relevant. Swimways, akin to avian flyways, are emerging as a crucial concept for the conservation of migratory fish, underscoring a significant aspect of cultural connectivity between humans and wildlife. This idea is exemplified by the innovative “fish doorbell” project in Utrecht, Netherlands, where citizens globally assist fish migration by pressing an online doorbell to open canal locks. This community-driven initiative reflects a broader effort by scientists to map and protect fish migration routes worldwide, similar to bird conservation strategies that have successfully preserved flyways across regions and nations. The first global map of swimways includes routes for 665 migratory fish species, highlighting the necessity of international collaboration in safeguarding these critical ecological pathways. Such efforts are pivotal for maintaining biodiversity and ensuring the survival of migratory species, which are increasingly threatened by obstacles like dams, overfishing, and climate change. You can find out more about the multitude of efforts undertaken to develop swimways around the world here: https://academic.oup.com/bioscience/article/72/2/116/6521755

The swimways initiative fosters a deeper understanding and global awareness of the interconnectedness of ecosystems and the cultural responsibility of humans to protect these vital aquatic routes. By supporting the natural migratory patterns of eels and other aquatic organisms, swimways help maintain the intricate web of life that sustains diverse ecosystems. Embracing these pathways not only honors the ecological significance of eels but also aligns with the Passamaquoddy’s and other indigenous tribes’s  profound understanding of interconnectedness and balance within the natural world.

This past spring, our community dedicated itself to understanding the profound ecological and cultural significance of eels, striving to deepen our connection to the broader ecological tapestry they represent. To achieve this, we immersed ourselves in every aspect of their conservation, ensuring we became gracious human hosts for our anguillid friends. Our efforts included constructing eel habitats, installing them, regularly monitoring their condition, and re-installing them whenever nature posed challenges. Through this hands-on involvement, we not only contributed to the well-being of the eels but also fostered a greater appreciation for the delicate balance of our shared environment.

These Mops Are The ‘Eel Deal 

On March 12, twelve  people came and engaged to build artificial eel habitats (a.k.a eel mops). In true citizen science fashion, we assembled these mops entirely out of materials that you could find at your local hardware store! The materials used in our eel mop construction was: 

  • Brown polypropylene rope (25 ft length, 5/8 in. diameter)
  • Plant Saucer (12 in.)
  • Cable ties (15 count, medium sized)
  • Eyebolt (5/16”)
  • Washer (5/16”)
  • Extra rope (cut to desired length)
  • Pie Plates
  • Cement

Reflecting on the process, the most difficult part was unwinding the polypropylene rope to simulate the grasses. It took a lot of effort but it was sure worth it to make a hospitable home for the eels! After we unfurled the rope, we folded and rubber banded each bundle of rope to create loops. We then marked the saucer with 15 pairs of evenly spaced holes and drilled them, along with a central hole for the eyebolt. After that we attached the rope bundles to the saucer with cable ties, then removed the rubber bands. To secure everything we mixed cement and poured it into a pie tin, placing a plastic-wrapped pencil in the center while it set. After the cement dried (which was a time consuming process too), we attached the cement weight to the saucer with the eyebolt, washer, and bolt. With 12 helping hands, and a process as streamlined as this we were able to construct the eel mop seamlessly and quite quickly. It is important to note however, that despite eel mops being easy to make, in order to deploy the mops you MUST  obtain a scientific collection permit from the NYS Department of Environmental Conservation, which the LRWP did prior to the collection process. 

Install of the Habitats, Aren’t They Surr-eel?

Many who saw the mops thought they consisted of real river grasses. Who knew it was just an optical eel-lusion! On March 26, seven of the LRWP’s volunteers came out to help us install the eel mop in the Green Brook. The hope was that this Eel BnB looked cozy enough to entice some of the migrating glass eels to make it their pit stop. 

We were very hopeful about finding eels, as their presence is a strong indicator of a healthy stream ecosystem, but we wouldn’t know until we gave the eels time to settle in. 

Having A Hard Time Falling Asleep? Count Eels Instead of Sheep! 

March 30th and April 13th, were our eel counting days. Unfortunately, the anguilla rostrata remained eel-lusive. Over those two days 15 wonderful volunteers checked the eel mop for inhabitants. Though we didn’t find any eels on those days we still found some macroinvertibrate friends, including very exciting dragonfly larvae! Akin to the eels, dragonflies are also an indicator species, and their presence let us know we were doing everything we can to be inviting hosts, the eels were just late to the party. Unfortunately, on our April 13th monitoring day we found out that our eel mop had broken due to damage from a big storm, so we had to remove the eel mop for repairs. 

Big Storms Sure Aren’t Id-eel… 

The damage from the storm certainly put a dent into our springtime monitoring plans, but we did our best to get the eel mop patched up as quickly as possible. On May 18, two of the LRWP’s board members, Heather Fenyk and Anton Getz, reinstalled the mop to see if the renovated home would entice some eels during the tail end of the season. The reinstall went quite smoothly and we looked forward to the last monitoring day of the season. 

Fun Fact: Eels Are Fashionably Late to Gatherings, But We Love to Have Them Anyway! 

On our last day of monitoring May 25, a week after the reinstall of the eel mop, we found a singular juvenile American glass eel. Eleven volunteers squealed in unison at the sight.

We measured our new friend and found that they were about 3.5 inches long and had started developing pigment. Based on research guidelines these characteristics would place this glass eel into the early elver stage of development, and approximately just over a year old. Happy 1st Birthday!  Of course after a lot of oohing and ahhing, picture-taking, and measurements, we put the eel back into the Green Brook for it to continue to grow to adulthood in our streams. We can’t convey how exciting it is to have the American glass eel confirmed as present in the Lower Raritan Watershed. Their arrival truly signals a thriving stream, and we’re so grateful that the health of the Green Brook is being reflected in the biodiversity.

What’s Next? Our Eel Spi-eel. 

Though the Lower Raritan Watershed Partnership engages in a variety of habitat assessment, macroinvertebrate, and pathogens monitoring projects, this was the first year that we were able to participate in eel monitoring. We embarked on this specific project in 2024 as a joint effort with installation of the Stormwater Systems Bandalong Bandit Litter Trap just downstream of the eel mop. The Litter Trap was installed in the aquatic nexus of Green Brook Borough, Dunellen Borough, and Plainfield – with the goal of relieving litter flows from this problem area. We are so proud of the work that we have done to both heal and observe the Green Brook, and the community involvement that has made both the projects a reality. 

Our goals for the 2024 Glass Eel monitoring cycle were multifold: 

  1. To establish a baseline for eel data for the portion of the Green Brook.
  2. Provide insight into the litter reduction project impact on aquatic life in the portion of the Green Brook.
  3. Give a voice to the link between litter reduction and environmental health within the context of a high profile and multi-municipality project. 
  4.  Engage community members in hands-on civic science environmental education activities, providing data regarding migratory behavior of spring eels in a neglected waterway. 
  5. Enhance public perception and usability of recreational areas along the Raritan River. 

Despite some setbacks, we successfully accomplished all of these goals this monitoring cycle. We were able to establish the baseline through successful eel capture, with the timing of our discovery providing valuable insights into seasonal eel observations in our waterway. Additionally, our efforts shed light on a simultaneous litter reduction project, highlighted by the installation of New Jersey’s first litter trap. This milestone speaks volumes about our community’s dedication to the health of the lower Raritan watershed. Continued commitment from the community is propelling biodiversity and environmental health on an upward trajectory. As of 2024, we celebrate the fourth year of multi-site, multi-municipality clean-ups along the Green Brook, building on years of targeted efforts. Since our concentrated community initiatives began, several tons of litter have been removed from the Green Brook, marking significant progress in our shared environmental stewardship. This also speaks volumes towards our goal of highlighting the link between litter reduction and environmental health. Furthermore, throughout the project, the LRWP engaged 40 volunteers in the different stages of the eel mop build, installation, and monitoring. This gave 40 community members hands-on experience in environmental education and civic science. Through this community engagement initiative, we also successfully improved the public perception and usability of recreational areas along the Raritan River.

Our journey through eel monitoring has not only deepened our understanding of ecological interconnectedness but also strengthened community bonds and environmental stewardship. Despite challenges, including storm damage and the eels’ tardy arrival, our perseverance and community spirit prevailed. The successful establishment of an eel baseline and insights into our litter reduction project underscore our commitment to the health of the lower Raritan watershed. As we look ahead, we remain dedicated to fostering biodiversity and enhancing public enjoyment of our precious waterways. This collaborative effort has empowered dozens of volunteers with hands-on environmental education, building a community focused on restoration for the Raritan River and larger watershed. We eagerly anticipate future eel monitoring endeavors, pending securing the necessary funding. This project has exemplified the strength of community collaboration, and we aspire to build upon these achievements with future initiatives.

Raritan Pathogens Results 6.20.2024

Every Thursday during the summer, from May to October, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County run a volunteer-based monitoring program along the Raritan River. We collect water quality samples at SIX non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory, and report the results to the public on Friday afternoons. Our mission is to share this data with the community and partners to ensure the safe use of the Raritan river for all.

Our lab results for water quality samples taken on Thursday June 20, 2024 show Enterococcus bacteria levels exceeding the EPA federal water quality standard of 104 cfu/100mL at only one of our monitoring sites this week. Problem sites are indicated by red frowns on the map and chart for 2nd Street Park (Perth Amboy) this week. Green smiles on the chart and map indicate the sites with bacteria levels safe for recreation, and include the following: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick) , Edison Boat Basin and Ken Buchanan Waterfront Park (Sayreville), and South Amboy Waterfront Park (South Amboy).

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, stormwater runoff, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. If you are planning on recreating on the Raritan this weekend, make sure to stay safe and wash up after any activities!

This week, we were fortunate enough to be joined by Rutgers President Holloway at our second monitoring site: The Class of 1914 Rutgers Boathouse! Photo Credit: Trish Maguire

Our volunteers took the reins yesterday and demonstrated how we conduct water quality monitoring as a collective team, check out President Holloway holding our YSI equipment! Photo Credit: Trish Maguire

Irene Riegner looking intently through her binoculars to complete our field observation and identify any wildlife present in the area at the time of sampling, Photo Credit: Jocelyn Palomino

Can you spot the osprey nest at our Sayreville site? Photo Credit: Jocelyn Palomino

Frank Dahl and Amane Kariya suited up in waders together to collect our sample and data for our South Amboy site, thank you both! Photo Credit: Jocelyn Palomino

The team pictured at our last monitoring location of the day, helping Amane who managed to handle the YSI and sample catching all-in-one go, Photo Credit: Frank Dahl

Raritan Pathogens Results 6.13.2024

By LRWP Monitoring Outreach Coordinator Jocelyn Palomino

During the summer, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County run a volunteer-based monitoring program along the Raritan river that takes place every Thursday, from May to October. We collect water quality samples at SIX non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory, and report the results to the public on Friday afternoons. Our mission is to share this data with the community and partners to ensure the safe use of the Raritan river for all.

Our lab results for water quality samples taken on June 13, 2024 show Enterococcus bacteria levels exceeding the EPA federal water quality standard of 104 cfu/100mL at only one of our monitoring sites this week. Problem sites are indicated by red frowns on the map and chart which includes: 2nd Street Park (Perth Amboy). Green smiles on the chart and map indicate the sites with bacteria levels safe for recreation and include: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick) , Edison Boat Basin and Ken Buchanan Waterfront Park (Edison), and South Amboy Waterfront Park (South Amboy).

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, stormwater runoff, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. If you are planning on recreating on the Raritan this weekend, make sure to stay safe and wash up after any activities!

A large flow of debris, geese poop and trash in the waters at the Rutgers Boathouse docks, Photo Credit: Rose Lawless

An osprey nest at Ken Buchanan Waterfront Park we have observed over the years, only a fraction of the abundant wildlife out on the Raritan! Photo Credit: Rose Lawless

Sofi Grossman threw the waders on for the first time in South Amboy Waterfront Park, thank you Sofi!! Photo Credit: Rose Lawless

Jocelyn Palomino and Sofi Grossman collecting data for the weekend at 2nd. Street Park with the Perth Amboy Carnival in the back, be sure to stay safe by the water! Photo Credit: Rose Lawless

Voice Your Vision: Planning for Recreational Access to the Raritan River

By LRWP Summer 2024 Research Intern Maya Fenyk

Yesterday, at a special listening session on recreational access to blue and green spaces within the Lower Raritan Watershed, one watershed resident shared their favorite way to access nature: “Lately, I’ve really enjoyed watching the bald eagles over the River.” Even 20 years ago, the idea that bald eagles could be a regular facet of our highly industrialized central New Jersey environment would have sounded like a fever dream, and now it is reality. During the June 11, 2024 listening session, hosted by the Lower Raritan Watershed Partnership (LRWP) and NY/NJ Harbor & Estuary Program (HEP), participants communicated a vision for the next 20 years: a robust network of blueways and greenways connecting local parkland and foot and bike paths within the Lower Raritan Watershed to larger regional and national networks of trails.

The input from this session, summarized below, will not only inform the LRWP’s understanding of recreational priorities but also help shape the HEP Action Agenda for recreation in our region for the next decade and beyond. The session was attended by 31 community members who contributed thoughts on recreational access and the larger state of the watershed. A recording of the session will be available on the LRWP youtube channel, and a bulleted summary of community member responses to a set of questions framed by HEP, is shared here:

Key takeaways can be summarized in response to two questions. The first, “If you could pick one change that’s necessary to have a greener, healthier, and more resilient community — what would that be?” and the second, “What are the challenges and obstacles that face local communities connection and access to nature?”

To the first question regarding required changes to realize a greener, healthier, more resilient community, participants communicated six core visions:


23% of respondents advocated for a shift towards environmentally centered leadership, policy, and planning, emphasizing the urgent need for eco-conscious governance.

23% of respondents voiced their desire for increased access to natural features, highlighting the intrinsic connection between human well-being and proximity to nature.

23% of respondents emphasized the critical role of environmental education, advocating for initiatives to raise awareness and empower communities to become stewards of their surroundings.

15% of participants underscored the importance of enhancing habitat connectivity, recognizing the significance of preserving ecological corridors for biodiversity and ecosystem resilience.

8% of respondents pinpointed increased funding as the key catalyst for change in the Lower Raritan Watershed, emphasizing the tangible impact of financial investment in environmental initiatives.

8% advocated for granting rights — akin to human rights — to the Raritan River, signaling a growing movement towards recognizing the intrinsic rights of natural entities.

To the second question regarding challenges and obstacles to realizing this vision, central concerns focused on infrastructure, transportation, and habitat fragmentation. 

One participant highlighted how infrastructure like Route 18 acts as a formidable barrier, impeding access to many natural areas. Others pointed to lost opportunities for retrofits that could remedy past disconnections to natural spaces through, e.g. reengineering roadways or repairs of Landing Lane Bridge. As was noted in our session, the construction of Route 18 started as a slum clearing project. This reflects a historical pattern of social injustices where urban planning decisions disregarded not only the environmental impacts but also equity impacts on our communities, and highlights the need for a holistic approach to restoring community health. By acknowledging the historical context of such projects and their environmental implications, we can work towards more equitable and environmentally responsible solutions for our communities.

Limited mass transit connections to green/blue spaces was another concern voiced by participants, with suggestions made to not only prioritize transportation between live-work activities, but also to open and natural spaces. Addressing these challenges requires advocacy for infrastructure improvements, such as championing Boyd Park’s transformation into a state park, as suggested by community members at the session yesterday. 

Additional questions included: 

  • Do you wish you had more and/or different opportunities to experience the natural environment? 
  • What kind of opportunities come to mind?
  • What are other concerns or stressors that your community is currently facing?
  •  How has climate change impacted your community?
  • Are there places/sites in your community where these concerns are more prevalent?

We invite you to read through the full set of ideas generated during the community engagement session (see above), to watch the video of the session, and welcome your thoughts on how to improve recreational access to blue and green spaces within the Lower Raritan Watershed and beyond.

Although the information in this document has been funded wholly or in part by the United States
Environmental Protection Agency under agreement to the Hudson River Foundation for the
New York-New Jersey Harbor & Estuary Program, it has not undergone the Agency’s
publications review process and therefore, may not necessarily reflect the views of the Agency,
and no official endorsement should be inferred. The viewpoints expressed here do not
necessarily represent the belief or opinions of the New York-New Jersey Harbor & Estuary
Program, Hudson River Foundation, or United States Environmental Protection Agency. They
assume no responsibility or liability for the contents or use of the information herein nor does
mention of trade names, commercial products, or causes constitute endorsement or
recommendation for use.

Congrats to Admiral William F. Halsey Health & Public Safety Academy!

We love sharing our water quality (and other) data, and love hearing how folks analyze these data. Earlier this week we received the following message from the Admiral William F. Halsey Health & Public Safety Academy (Elizabeth, NJ):

Dear Lower Raritan Watershed Partnership –

We are pleased to inform you that we utilized the data you provided to conduct statistical analyses, including a correlational study and one-way ANOVA, yielding interesting results. Our study, titled “Beyond the Flush: The Journey of Enterococcus and Fecal Coliform in Our Environment,” was presented at the GCSE’s 2024 EnvironMentors National Science Fair at the U.S. Department of Agriculture in Washington, D.C., where we placed third.

This award would not have been possible without your support and assistance. I would like to express my heartfelt thanks for allowing us to use your data.

Congratulations to all involved!

Admiral William F. Halsey High School student Yahya Mohammed was recognized by the United States Department of Agriculture for his analyses of the LRWP’s pathogens data for the years 2019-2023.

Raritan Pathogens Results 6.06.2024

By LRWP Monitoring Outreach Coordinator Jocelyn Palomino

During the summer, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County run a volunteer-based monitoring program along the Raritan river that takes place every Thursday, from May to October. We collect water quality samples at SIX non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory, and report the results to the public on Friday afternoons. Our mission is to share this data with the community and partners to ensure the safe use of the Raritan river for all.

Our lab results for water quality samples taken on June 6, 2024 show Enterococcus bacteria levels exceeding the EPA federal water quality standard of 104 cfu/100mL at 5 of our monitoring sites this week. Problem sites are indicated by red frowns on the map and chart which include: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick), Edison Boat Basin and Ken Buchanan Waterfront Park (Edison), and 2nd Street Park (Perth Amboy). Green smiles on the chart and map indicate the sites with bacteria levels safe for recreation and include: South Amboy Waterfront Park (South Amboy).

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, stormwater runoff, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. Please be sure to wash thoroughly after any activities on the Raritan this weekend!

Sofi Grossman, Frank Dahl and Rose Lawless are a perfect example of how monitoring is done in teamwork at Riverside Park! Photo Credit: Heather Fenyk

Dark, cloudy skies over the Raritan on Thursday morning… Our volunteers grab the samples right of the Rutgers Dock at our second monitoring site, Photo Credit: Rose Lawless

A beautiful shot by Rose Lawless of the old coal power plant in Sayreville near our fourth monitoring location, Photo Credit: Rose Lawless

Sofi Grossman checking out the waters at our South Amboy site to take note of any recreational activities! Photo Credit: Rose Lawless

Our sixth monitoring site is at the end of 2nd Street Park in Perth Amboy, right near the combined sewer outfall. Heavy rain events can cause untreated sewer to overflow into the waters where local residents recreate, Photo Credit: Rose Lawless

Raritan Pathogens Results for 5.30.2024

By LRWP Monitoring Outreach Coordinator Jocelyn Palomino

During the summer, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County run a volunteer-based monitoring program along the Raritan river that takes place every Thursday, from May to October. We collect water quality samples at SIX non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory, and report the results to the public on Friday afternoons. Our mission is to share this data with the community and partners to ensure the safe use of the Raritan river for all.

After the rainfall experienced on Wednesday, our lab results for water quality samples taken on May 30, 2024 show Enterococcus bacteria levels exceeding the EPA federal water quality standard of 104 cfu/100mL at 4 of our monitoring sites this week. Problem sites are indicated by red frowns on the map and chart which include: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick), Edison Boat Basin (Edison) and 2nd Street Park (Perth Amboy). Green smiles on the chart and map indicate the sites with bacteria levels safe for recreation and include: Ken Buchanan Waterfront Park (Edison) and South Amboy Waterfront Park (South Amboy).

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, stormwater runoff, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. If you decide to recreate on the Raritan this weekend, please do so safely and be sure to wash thoroughly after all activities!

We encounter all types of wildlife during monitoring, we always make sure to record data on which animals are present at the time of our sample collection, as it could possibly contribute to the fecal bacteria in the water. Photo Credit: Rose Lawless

Don’t forget to keep an eye-out for our stickers with a QR code that directs you to the weekly water quality results on our website! Photo Credit: Rose Lawless

Volunteers Andrew Gehman and Rose Lawless working together to collect the data on this week’s water conditions at Ken Buchanan Waterfront Park, THANK YOU!! Photo Credit: Jocelyn Palomino

From collecting samples to conducting field observations, water quality monitoring takes teamwork to successfully gather the appropriate data to better understand what our results mean. Photo Credit: Jocelyn Palomino

Speaking of wildlife… we had a visitor lurking by at 2nd St. Park in Perth Amboy who was enjoying the sand! Photo Credit: Rose Lawless

Raritan Pathogens Results 5.23.2024

By LRWP Monitoring Outreach Coordinator Jocelyn Palomino

On Thursday May 23, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County kicked-off the 2024 Summer Pathogens Monitoring Program! This volunteer-based program runs from May to October and takes place every Thursday monitoring along the Raritan River. We collect water quality samples at SIX non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory, and report the results to the public on Friday afternoons. We are looking forward to sharing our data with the community and partners to ensure the safe use of the Raritan river for all.

Unfortunately, the beginning of our 2024 season was cut short due to heavy rains and lightning, and we only collected 3 of 6 samples during our first run. Lab results for water quality samples taken on May 23, 2023 show that Enterococcus bacteria levels do not exceed the EPA federal water quality standard at the three upstream sites we collected at this week. Green smiles on the chart and map indicate sites with bacteria levels below the standard safe for recreation which only includes three sites this week: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick) and Edison Boat Ramp (Edison).

Please note that two of our samples were taken prior to the rain event (Riverside Park and Rutgers Boathouse), and keep in mind that the Raritan River receives significant stormwater runoff during rain events, often contributing to pollutant loading in our waterways.

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, stormwater runoff, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. If you decide to recreate on the Raritan this Memorial Day Weekend, please do so safely and be sure to wash thoroughly after all activities!

BIG thanks to Sofi Grossman and Frank Dahl, our first volunteers of 2024! Thanks also to Interstate Environmental Commission Intern Ruby Alcorn and IEC Environmental Analyst Samantha Wilder for coming out to help kick things off! Photo credit: Maya Fenyk

Our team collecting samples and data as the rainfall started early Thursday morning. The rain couldn’t stop us, but lightning could! Photo credit: Heather Fenyk

Our Quality Assurance Protocol Plan (QAPP) requires us to conduct pre and post-calibration of the monitoring equipment to ensure that our YSI is reading parameters, like pH and salinity, as accurately as possible. We use Project Coordinator Jocelyn Palomino’s car trunk as a makeshift lab. Photo credit: Heather Fenyk

Pathogens Monitoring with the LRWP, a Volunteer’s Perspective

Article by LRWP Volunteer Monitoring Irene Riegner

Water, water everywhere”—but can you drink it? For the last five years, citizen scientists under the guidance of the Lower Raritan Watershed Partnership have been monitoring the water quality of the lower Raritan River.  Last summer, I was one of those monitors.  Once a week from late spring through early fall, through spring rains and summer heat, we tested the waters from Perth Amboy north to Piscataway.  We tested quantitatively through water samples and instrument readings and qualitatively through observation.  The river was in better condition than I would have imagined:  Despite abandoned factories along its banks; despite surrounding industrial neighborhoods, junk yards, and heavy industry; despite the usual litter; despite sewage outflow; despite bird guano.

Near Highland Park, I watched a great blue heron gracefully stalking its prey.  Then, zap.  The fish entered its eternal afterlife.  In Piscataway, cormorants floated on the river and periodically dived for dinner.  Near the Edison Boat Basin, osprey, scrutinizing the river from their high perch, nested across from a landfill and next to a petro-chemical factory. The river must be alive; there must be a plentiful source of food in its depths. 

Water quality monitoring volunteer, and article author, Irene Riegner helps the LRWP and NJDEP scout locations installation of an ISCO water quality sampler for a Summer 2024 study

We took readings for dissolved oxygen, pH and salinity and measured the temperature.  The numbers varied but usually landed within favorable parameters, pointing to a reasonably healthy aquatic life.  On the other hand, elevated readings of enterococcus, an indicator of pathogenic disease, were troublesome. We took water samples for testing.  A red face on our charts indicated that enterococcus was above the permitted level.  Perhaps effluvia from a nearby outflow.  Perhaps runoff after a rainstorm.  Perhaps downstream waste flowing upstream with the current.

“Do you eat the fish you catch?” I asked the local fishermen casting their lines into the water.  “We throw ‘em back,” most of them answered.  Fishing and the river mean a morning with their buddies.  Sailing and the river mean recreation with family and friends. The sailboats are moored in the river near South Amboy, near the million dollar, Victorian style homes, snuggled between factories and dumps. I never observed anyone swimming from the sand beach in front of these homes. 

Last summer, I began learning about the river, learning to understand it as an organism with complex parts, both natural and human-constructed, whose reach radiates beyond its banks into the municipalities and parks that line its shores—and beyond.  Maybe with the communal effort of municipalities lining the Raritan and its tributaries, the river once again can become a focal point for recreation—and maybe, someday, we could even eat the fish and swim in it. 

The 2023 summer monitoring revealed the cleanest water yet.

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