We’re committed to improving our ecosystems, quality of life, and communities for the better.
Our passion and commitment to the integration of innovative science and engineering drive us to exceed on behalf of every client.
It’s River’s Month in Pennsylvania! To celebrate, the nonprofit Schuylkill River Greenways, in partnership with Berks Nature, Bartram’s Garden, The Schuylkill Center for Environmental Education, Stroud Water Research Center, and Princeton Hydro launched a new interactive ArcGIS StoryMap web page that reveals local perceptions of the Schuylkill River and documents the ecological status of the main stem through a year-long water quality and trash monitoring project: bit.ly/schuylkillriver. The ultimate goal of this new publicly-available resource is to connect residents and communities with the Schuylkill River and to encourage engagement with this special resource.
“For decades we have heard misgivings from residents throughout the watershed about the water quality of the Schuylkill River, and unfortunately the terrible reputation that the river had from years of polluting continues to linger. But the truth is that today the river is actually quite healthy and clean,” said Tim Fenchel, Deputy Director of Schuylkill River Greenways. “In this project we set out to work with our partners and community members to finally set the record straight with solid data about the health of the river.”
“This project brought together the conservation community and community scientists to understand the water quality and social perceptions of the Schuylkill River,” said Michael Hartshorne, Director of Aquatics at Princeton Hydro. “The results showed that the river, while having challenges as many waterbodies do, is a vibrant corridor that offers many recreational and environmental opportunities for those that live in the region.”
To understand local perceptions of the Schuylkill River’s residents, we first conducted a community opinion survey. Over 300 community members from Berks, Chester, Montgomery, and Philadelphia Counties participated. Overall, we found that a majority of people do care about the river (56%) and bike or walk along it (60%). However, many are not confident whether the river is clean or safe to use for recreational activity, clean enough to swim in, or safe to eat fish from. When asked about the cause of river contamination, an overwhelming majority (85%) cited “Trash and Litter” as the problem. This insight was used to drive the priorities for water quality monitoring and inspired the launch of a new Community Science trash monitoring program.
To determine the ecological status of the river, we collected water quality data for one year. Water temperature, dissolved oxygen, turbidity, and conductivity were continuously measured at four locations. Bacteria sampling for Enterococci coli (E. coli) was also conducted at each station over the course of the study.
“Protecting safe recreational access to rivers and streams is one of the most important contributions we as environmental stewards can make to local communities. This project has made great strides in supporting this cause on the Schuylkill River,” said David Bressler, Project Facilitator at Stroud Water Research Center.
To complement the water quality sampling, the team recruited “Community Scientists” to monitor and measure trash along the river by conducting 5-minute visual assessments. It aimed to document critical areas of trash accumulation or dumping points in order to guide management efforts to better deal with this pollution. Over 100 responses were logged by volunteers. Overall, the results were positive; between 73% and 90% of sites on the main stem of the Schuylkill River were rated as optimal. The participants deemed the study reach to be clean and safe for both human and aquatic life, however, there are certainly locations along the Schuylkill River that could be cleaned up.
The data collected tells the tale of a vibrant river corridor with numerous opportunities for kayaking, fishing, bird watching, hiking, and biking. The dry weather data showed water quality conditions to be ideal during the time periods most people would utilize the river. E. coli concentrations were low, and transparency is high as shown by turbidity levels. Still, the river is constrained within an environment that spans the more agriculturally rich upstream reaches down to urbanized Philadelphia. Agricultural erosion, stormwater, and suburban pollutants are a challenge upstream, while stormwater runoff, litter, and sewer overflows are a primary concern during rainfall events in the more urbanized portions of the river. During rainfall, we measured elevated E. coli, turbidity, and trash which causes poor water quality conditions. However, this should not deter those who love and enjoy the river from using it, understanding that the safest conditions are likely following periods of dry weather.
“Our coordinated monitoring effort has been a special opportunity to capture snapshots of the river from top to bottom at specific points in time. The data we collected drives home that the Schuylkill is by many measures a healthy river bouncing back from intense industrial pollution. Different issues affect different locations along its 135 miles, but we are all connected upstream and downstream!,” said Chloe Wang, River Programs Coordinator at Bartram’s Garden. “In addition to our learnings about water quality, having water samples analyzed at both a professional lab and using DIY methods at our own sites helped us to understand the accuracy of the low-cost tools we can use in community science and education programs.”
Additionally, the project partners were able to put the collected data to action by submitting it to the Pennsylvania Department of Environmental Protection, one of the regulatory agencies responsible for implementing the Clean Water Act for the Schuylkill. “There is so much more to learn about the river, but I hope this work helps people make informed decisions about when to get out on the water, and draws attention to opportunities to continue improving river health,” expressed Wang.
The water quality and trash assessment sampling protocol and interactive ArcGIS Story Map was designed by Princeton Hydro, with input from all the project partners. Detailed results and data from the perception and options survey, water quality monitoring, and trash assessment monitoring can be found on the StoryMap.
“Land and water are intrinsically connected – you can’t have healthy landscapes without healthy watersheds. Supporting this relationship is core to Berks Nature’s mission and conservation work, and through our 74-year tenure as Berks County’s land trust, we’ve seen the Schuylkill River flow cleaner and cleaner,” said Michael Griffith, Education & Watershed Specialist at Berks Nature. “We were thrilled to participate in this project not only as an opportunity to deepen our understanding of this regionally significant waterway, but also to shift public perceptions of the Schuylkill River as a community asset.”
“As we had hoped, we found that the river is indeed in great shape and we are now trying to spread the good news that all kinds of recreation on the river are safe and encouraged – including kayaking, boating, and fishing,” said Fenchel. “We have an incredible recreational and environmental asset in this river and we want everyone to know about it.”
This project was truly a team effort, with collaboration and engagement from all project partners. It was funded by the William Penn Foundation who has long been a supporter of this and similar projects throughout the Schuylkill and Delaware River Watersheds.
ABOUT SCHUYLKILL RIVER GREENWAYS: The mission of the Schuylkill River Greenways National Heritage Area is to connect residents, visitors and communities to the Schuylkill River and the Schuylkill River Trail by serving as a catalyst for civic engagement and economic development in order to foster stewardship of the watershed and its heritage.
ABOUT BARTRAM’S GARDEN: Bartram’s Garden is a 45-acre National Historic Landmark, operated by the John Bartram Association in cooperation with Philadelphia Parks and Recreation. It is a destination and an outdoor classroom, living laboratory, and membership organization for ever-expanding audiences―over 95,000 each year and counting.
ABOUT STROUD WATER RESEARCH CENTER: Stroud Water Research Center seeks to advance knowledge and stewardship of freshwater systems through global research, education, and watershed restoration. Since 1967, Stroud Water Research Center has been leading the effort to produce innovative solutions for preserving and restoring fresh water. The organization believes in an independent voice — and in adventure, inspiration, perseverance, and integrity.
ABOUT BERKS NATURE: As a nonprofit conservation organization, Berks Nature has been serving the Berks County community since 1974. Land preservation, water protection, trail management, community gardens, education programs, State of the Environment, Eco-Camp and valued partnerships are at the center of Berks Nature’s work every day.
ABOUT SCHUYLKILL CENTER FOR ENVIRONMENTAL EDUCATION: Founded in 1965, the Schuylkill Center is one of the first urban environmental education centers in the country, with 340 acres of fields, forests, ponds, and streams in northwest Philadelphia. They work through four core program areas: environmental education, environmental art, land stewardship, and wildlife rehabilitation.
ABOUT PRINCETON HYDRO: Princeton Hydro is committed to improving our ecosystems, quality of life, and communities for the better. The firm was formed in 1998 with the specific mission of providing integrated ecological and engineering consulting services. Offering expertise in natural resource management, water resources engineering, geotechnical design & investigation, and regulatory compliance, their staff provide a full suite of environmental services throughout the Northeast for the public and private sectors.
Array ( [0] => WP_Post Object ( [ID] => 4727 [post_author] => 3 [post_date] => 2020-05-29 17:21:35 [post_date_gmt] => 2020-05-29 17:21:35 [post_content] => Hydrology is the study of the properties, distribution, and effects of water on the Earth’s surface, in the soil and underlying rocks, and in the atmosphere. The hydrologic cycle includes all of the ways in which water cycles from land to the atmosphere and back. Hydrologists study natural water-related events such as drought, rainfall, stormwater runoff, and floods, as well as how to predict and manage such events. On the application side, hydrology provides basic laws, equations, algorithms, procedures, and modeling of these events. Hydraulics is the study of the mechanical behavior of water in physical systems. In engineering terms, hydraulics is the analysis of how surface and subsurface waters move from one point to the next, such as calculating the depth of flow in a pipe or open channel. Hydraulic analysis is used to evaluate flow in rivers, streams, stormwater management networks, sewers, and much more. Combined hydrologic and hydraulic data, tools, and models are used for analyzing the impacts that waterflow - precipitation, stormwater, floods, and severe storms - will have on the existing infrastructure. This information is also used to make future land-use decisions and improvements that will work within the constraints of the hydrologic cycle and won’t exacerbate flooding or cause water quality impairment. Simply put, hydrologic and hydraulic modeling is an essential component of any effective flood risk management plan. Putting Hydrologic & Hydraulic Analysis to Work in Philadelphia Eastwick, a low-lying urbanized neighborhood in Southwest Philadelphia, is located in the Schuylkill River Watershed and is almost completely surrounded by water: The Cobbs and Darby creeks to the west, the Delaware River and wetlands to the south, and the Schuylkill River and Mingo Creek to the east. The community is at continual risk of both riverine and coastal flooding, and faces an uncertain future due to sea level rise and riverine flooding exacerbated by climate change. Princeton Hydro, along with project partners KeystoneConservation and University of Pennsylvania, conducted an analysis of Eastwick, the flood impacts created by the Lower Darby Creek, and the viability of several potential flood mitigation strategies. Flood mitigation approaches can be structural and nonstructural. Structural mitigation techniques focus on reconstructing landscapes, including building floodwalls/seawalls and installing floodgates/levees. Nonstructural measures work to reduce damage by removing people and property out of risk areas, including zoning, elevating structures, and conducting property buyouts. For Eastwick, studying stream dynamics is a key component to determining what type of flood mitigation strategies will yield the most success, as well as identifying the approaches that don’t work for this unique area. Princeton Hydro’s study focused on the key problem areas in Eastwick: the confluence of Darby Creek and Cobbs Creek; a constriction at Hook Road and 84th Street; and the Clearview Landfill, which is part of the Lower Darby Creek Superfund site. Additionally, the study sought to answer questions commonly asked by community members related to flooding conditions, with the main question being: What impact does the landfill have on area flooding? The built-up landfill is actually much higher than the stream bed, which creates a major disconnection between the floodplain and the stream channel. If the landfill didn’t exist, would the community still be at risk? If we increased the floodplain into the landfill, would that reduce neighborhood flooding? Princeton Hydro set out to answer these questions by developing riverine flooding models primarily using data from US Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA), The National Oceanic and Atmospheric Administration (NOAA), and NOAA's National Weather Service (NWS). FEMA looks at the impacts of 1% storms that are primarily caused by precipitation events as well as coastal storms and storm surge. NOAA looks at the impacts of hurricanes. And, NOAA's NWS estimates sea, lake and overland storm surge heights from hurricanes. The models used 2D animation to show how the water flows in various scenarios, putting long-held assumptions to the test. The models looked at several different strategies, including the complete removal of the Clearview Landfill, which many people anticipated would be the silver bullet to the area’s flooding. The modeling revealed, however, that those long-held assumptions were invalid. Although the landfill removal completely alters the flood dynamics, the neighborhood would still flood even if the landfill weren’t there. Additionally, the modeling showed that the landfill is actually acting as a levee for a large portion of the Eastwick community. Ultimately, the research and modeling helped conclude that for the specific scenarios we studied, altering stream dynamics – a non-structural measure – is not a viable flood mitigation strategy. The USACE is currently undergoing a study in collaboration with the Philadelphia Water Department to test the feasibility of a levee system (a structural control measure), which would protect the Eastwick community by diverting the flood water. Funding for the study is expected to be approved in the coming year. Take a Deeper Look at Eastwick Flood Mitigation Efforts There are many studies highlighting flood mitigation strategies, environmental justice, and climate change vulnerability in Eastwick. Princeton Hydro Senior Project Manager and Senior Ecologist, Christiana Pollack CFM, GISP, presented on the flooding in Eastwick at the Consortium for Climate Risk in the Urban Northeast Seminar held at Drexel University. The seminar also featured presentations from Michael Nairn of the University of Pennsylvania Urban Studies Department, Ashley DiCaro of Interface Studios, and Dr. Philip Orton of Stevens Institute of Technology. You can watch the full seminar here: For more information about Princeton Hydro’s flood management services, go here: http://bit.ly/PHfloodplain. … [post_title] => Analyzing Mitigation Strategies for Flood-Prone Philadelphia Community [post_excerpt] => [post_status] => publish [comment_status] => open [ping_status] => open [post_password] => [post_name] => floodplain-management [to_ping] => [pinged] => [post_modified] => 2021-04-22 13:40:40 [post_modified_gmt] => 2021-04-22 13:40:40 [post_content_filtered] => [post_parent] => 0 [guid] => https://www.princetonhydro.com/blog/?p=4727 [menu_order] => 0 [post_type] => post [post_mime_type] => [comment_count] => 1 [filter] => raw ) [1] => WP_Post Object ( [ID] => 5431 [post_author] => 3 [post_date] => 2020-10-27 10:27:13 [post_date_gmt] => 2020-10-27 10:27:13 [post_content] => The Dunes at Shoal Harbor, a coastal residential community in Monmouth County, New Jersey, is situated adjacent to both the Raritan Bay and the New York City Ferry channel. In July 2018, Princeton Hydro was contracted to restore this coastal community that was severely impacted by Hurricane Sandy. Today, we are thrilled to report that the shoreline protection design plans have been fully constructed and the project is complete.
Hydrology is the study of the properties, distribution, and effects of water on the Earth’s surface, in the soil and underlying rocks, and in the atmosphere. The hydrologic cycle includes all of the ways in which water cycles from land to the atmosphere and back. Hydrologists study natural water-related events such as drought, rainfall, stormwater runoff, and floods, as well as how to predict and manage such events. On the application side, hydrology provides basic laws, equations, algorithms, procedures, and modeling of these events.
Hydraulics is the study of the mechanical behavior of water in physical systems. In engineering terms, hydraulics is the analysis of how surface and subsurface waters move from one point to the next, such as calculating the depth of flow in a pipe or open channel. Hydraulic analysis is used to evaluate flow in rivers, streams, stormwater management networks, sewers, and much more.
Combined hydrologic and hydraulic data, tools, and models are used for analyzing the impacts that waterflow - precipitation, stormwater, floods, and severe storms - will have on the existing infrastructure. This information is also used to make future land-use decisions and improvements that will work within the constraints of the hydrologic cycle and won’t exacerbate flooding or cause water quality impairment.
Simply put, hydrologic and hydraulic modeling is an essential component of any effective flood risk management plan.
Eastwick, a low-lying urbanized neighborhood in Southwest Philadelphia, is located in the Schuylkill River Watershed and is almost completely surrounded by water: The Cobbs and Darby creeks to the west, the Delaware River and wetlands to the south, and the Schuylkill River and Mingo Creek to the east. The community is at continual risk of both riverine and coastal flooding, and faces an uncertain future due to sea level rise and riverine flooding exacerbated by climate change.
Princeton Hydro, along with project partners KeystoneConservation and University of Pennsylvania, conducted an analysis of Eastwick, the flood impacts created by the Lower Darby Creek, and the viability of several potential flood mitigation strategies.
Flood mitigation approaches can be structural and nonstructural. Structural mitigation techniques focus on reconstructing landscapes, including building floodwalls/seawalls and installing floodgates/levees. Nonstructural measures work to reduce damage by removing people and property out of risk areas, including zoning, elevating structures, and conducting property buyouts.
For Eastwick, studying stream dynamics is a key component to determining what type of flood mitigation strategies will yield the most success, as well as identifying the approaches that don’t work for this unique area.
Princeton Hydro’s study focused on the key problem areas in Eastwick: the confluence of Darby Creek and Cobbs Creek; a constriction at Hook Road and 84th Street; and the Clearview Landfill, which is part of the Lower Darby Creek Superfund site. Additionally, the study sought to answer questions commonly asked by community members related to flooding conditions, with the main question being: What impact does the landfill have on area flooding?
The built-up landfill is actually much higher than the stream bed, which creates a major disconnection between the floodplain and the stream channel. If the landfill didn’t exist, would the community still be at risk? If we increased the floodplain into the landfill, would that reduce neighborhood flooding?
Princeton Hydro set out to answer these questions by developing riverine flooding models primarily using data from US Army Corps of Engineers (USACE), Federal Emergency Management Agency (FEMA), The National Oceanic and Atmospheric Administration (NOAA), and NOAA's National Weather Service (NWS). FEMA looks at the impacts of 1% storms that are primarily caused by precipitation events as well as coastal storms and storm surge. NOAA looks at the impacts of hurricanes. And, NOAA's NWS estimates sea, lake and overland storm surge heights from hurricanes.
The models used 2D animation to show how the water flows in various scenarios, putting long-held assumptions to the test.
The models looked at several different strategies, including the complete removal of the Clearview Landfill, which many people anticipated would be the silver bullet to the area’s flooding. The modeling revealed, however, that those long-held assumptions were invalid. Although the landfill removal completely alters the flood dynamics, the neighborhood would still flood even if the landfill weren’t there. Additionally, the modeling showed that the landfill is actually acting as a levee for a large portion of the Eastwick community.
Ultimately, the research and modeling helped conclude that for the specific scenarios we studied, altering stream dynamics – a non-structural measure – is not a viable flood mitigation strategy.
The USACE is currently undergoing a study in collaboration with the Philadelphia Water Department to test the feasibility of a levee system (a structural control measure), which would protect the Eastwick community by diverting the flood water. Funding for the study is expected to be approved in the coming year.
There are many studies highlighting flood mitigation strategies, environmental justice, and climate change vulnerability in Eastwick. Princeton Hydro Senior Project Manager and Senior Ecologist, Christiana Pollack CFM, GISP, presented on the flooding in Eastwick at the Consortium for Climate Risk in the Urban Northeast Seminar held at Drexel University. The seminar also featured presentations from Michael Nairn of the University of Pennsylvania Urban Studies Department, Ashley DiCaro of Interface Studios, and Dr. Philip Orton of Stevens Institute of Technology.
For more information about Princeton Hydro’s flood management services, go here: http://bit.ly/PHfloodplain.
…
The Dunes at Shoal Harbor, a coastal residential community in Monmouth County, New Jersey, is situated adjacent to both the Raritan Bay and the New York City Ferry channel. In July 2018, Princeton Hydro was contracted to restore this coastal community that was severely impacted by Hurricane Sandy. Today, we are thrilled to report that the shoreline protection design plans have been fully constructed and the project is complete.
In order to protect the coastal community from flooding, a revetment had been constructed on the property many years ago. The revetment, however, was significantly undersized and completely failed during Hurricane Sandy. The community was subjected to direct wave attack and flooding, homes were damaged, beach access was impaired, and the existing site-wide stormwater management basin and outfall was completely destroyed.
The installation of a 15-foot rock revetment (one foot above the 100-year floodplain elevation) constructed with four-foot diameter boulders;
The replacement of a failed elevated timber walkway with a concrete slab-on-grade walkway, restoring portions of the existing bulkhead, clearing invasive plants, and the complete restoration of the failed stormwater basin and outlet; and
The development of natural barriers to reduce the impacts of storm surges and protect the coastal community, including planting stabilizing coastal vegetation to prevent erosion and installing fencing along the dune to facilitate natural dune growth.
During the final walkthrough earlier this month, the Princeton Hydro team captured drone footage of the completed project site. Click below to watch the video:
<span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start">?</span>
For more images and background information on this project, check out the following photo gallery and read our original blog post from July 2018:
For more information about Princeton Hydro’s engineering services, go here.
The Lake Hopatcong Foundation (LHF) recently launched its newest initiative - a floating classroom. The custom-built 40-foot education vessel, named 'Study Hull', gives students an interactive, hands-on education experience to explore Lake Hopatcong, learn about freshwater ecology, and learn how to protect the watershed.
During its maiden voyage field trip, which was held on May 21, fourth-graders from Nixon Elementary and Kennedy Elementary schools utilized the boat’s laboratory instruments to study water hydrology, temperatures, plankton, and dissolved oxygen levels. They performed a series of tests and experiments designed to help them learn about the general health of the lake. They used Secchi Disks to determine the depth to which light is able to penetrate the water's surface. They also learned about runoff and nonpoint source pollutants, how to protect the lake’s water quality, and how to be good stewards of the water.
Princeton Hydro helped the LHF design a teaching curriculum on water quality. Dr. Jack Szczepanski, Senior Aquatics Scientist, and Christopher L. Mikolajczyk, CLM, Senior Project Scientist, trained the staff and volunteers on the curriculum and demonstrated various water quality monitoring techniques that can be conducted with the students.
“We’re really proud to be a part of this exciting initiative,” said Mikolajczyk. “It’s really important to get kids interested in science at an early age and teach them about their surrounding environment – where their drinking water comes from, how it gets polluted, the impacts pollution has on the lake’s ecosystem, and what steps can be made to protect the lake’s water quality. We're hoping the floating classroom field trip program will make a lasting, valuable impression with these kids.”
In the first year of operation it is expected that the Study Hull will host 1,000 fourth grade students. The long-term goal is to develop lesson plans for students in every grade from kindergarten through high school. Starting in July, the LHF is also offering the public tours of the floating classroom on Mondays at Hopatcong State Park.
The purchase of the floating classroom was made possible by financial support from USATODAY Network’s “A Community Thrives” program, which awarded the LHF with a $50,000 grant. The program recognizes three categories: arts and culture, education, and wellness. In each category, the first place winner received a $100,000 grant and the second and third place winners received $50,000 grants. The James P. Verhalen Family Foundation and the Szigethy Family also provided significant donations to help bring the floating classroom to life.
The LHF and Princeton Hydro are longtime partners. Starting back in 1983, Princeton Hydro’s Dr. Stephen Souza conducted the USEPA funded Diagnostic Feasibility study of the lake and then authored the Lake Hopatcong Restoration Plan. That document continues to be the backbone of why and how to restore the lake, manage the watershed, reduce pollutant loading, and address invasive aquatic plants and nuisance algae blooms.
Lake Hopatcong has one of the longest, continuous, long-term ecological databases in New Jersey; almost 30 years of consistently collected water quality data. The data is crucial in assessing the overall ecological health of the lake and proactively guiding its management, identifying and addressing emerging threats, documenting project success (a mandatory element of funding initiatives) and confirming compliance with New Jersey State Water Quality standards.
Princeton Hydro’s most recent work for Lake Hopatcong includes the implementation of green infrastructure stormwater management measures, installation of floating wetland islands to improve water quality, and invasive aquatic plant species management programs, community educational training, and surveys.
For more information about the Lake Hopatcong Foundation or the floating classroom, click here. For more information about Princeton Hydro’s lake management services, go here.
For over 100 years, the Old Mill Pond Dam in Spring Lake Heights, New Jersey has blocked critical anadromous fish species from reaching optimal spawning habitat. Today, we are thrilled to announce that, thanks to a fish ladder installed by the American Littoral Society (ALS), migratory fish can now scale the dam and access upstream spawning grounds.
The 60-foot-long fish ladder is a device that allows a channel of water to flow through it and is engineered to create both the proper water depth and velocity for fish to navigate through. In this case, it will enable fish to scale the 10-foot-high dam and go deeper into Wreck Pond Brook.
This video from ALS provides an up-close look at the Alaska-Steeppass Fish Ladder and more details about the project:
Re-opening river passage for migratory species improves not only the health of Wreck Pond Brook and its watershed, but it also benefits the overall ecosystem of the Atlantic shoreline and its coastal rivers. It also supports important recreational and commercial species, such as cod, haddock, and striped bass, which leads to a healthier economy.
For over a century, the dam blocked anadromous fish like Alewife and Blueback river herring, from entering the Wreck Pond Brook Watershed. These fish spend most of their lives in the ocean but need freshwater in order to spawn. The Old Mill Pond Dam, an impassable obstruction for these migrating fish, was identified as a key contributor to the decline of Atlantic coast river herring populations. Subsequently, river herring were classified as National Oceanic and Atmospheric Administration (NOAA) Species of Special Concern and identified as requiring Concentrated Conservation Actions.
The fish ladder, which was funded through the US Fish and Wildlife Service and implemented by ALS along with a variety of project partners, including Princeton Hydro, is one more major step in the ongoing effort to restore critical migratory fish spawning grounds, support a vibrant food web to the area, and rehabilitate Wreck Pond and its watershed.
According to the ALS, “Now, instead of Old Mill Dam acting as the furthest migration destination for Alewife and Blueback river herring, these fish have the ability to navigate up the dam through the fish ladder and utilize roughly an additional mile of optimal spawning habitat. The ALS will add the Old Mill Dam fish ladder and newly accessible spawning habitat into its ongoing river herring monitoring surveys.”
American Littoral Society promotes the study and conservation of marine life and habitat, protects the coast from harm, and empowers others to do the same. Learn more and get involved: littoralsociety.org.
Princeton Hydro has designed, permitted, and overseen solutions for fish passage including the installation of technical and nature-like fishways and the removal of dozens of small and large dams throughout the Northeast. To learn more about our fish passage and dam removal engineering services, visit: bit.ly/DamBarrier.
Images provided by the American Littoral Society.
To prevent further erosion at the Slade Dale Sanctuary in Point Pleasant, dozens of volunteers helped stabilize the shoreline using a technique that has never been done before in New Jersey. On Saturday, American Littoral Society, in partnership with Princeton Hydro, Borough of Point Pleasant, New Jersey Nature Conservancy, New Jersey Corporate Wetlands Restoration Partnership, and the Point Pleasant Rotary Club, organized dozens of volunteers to restore the shoreline and prevent further erosion at the Slade Dale Sanctuary using recycled Christmas trees.
As one of only a few areas of open space left in Point Pleasant, the 13-acre Slade Dale Sanctuary is an important part of the local ecosystem, and is home to a number of unique animals and plants. This waterfront preserve along the North Branch Beaver Dam Creek is predominantly tidal marsh, which provides habitat for various birds, including osprey, as well as passive recreation opportunities for the community.
Unfortunately, the Slade Dale Sanctuary is disappearing. Since 1930, the shoreline of Slade Dale Sanctuary has retreated approximately 300 feet, equal to the length of a football field, and the channels into the marsh have increased in number and size, according to a study we conducted on behalf of American Littoral Society, for which we provide engineering and natural resources management consulting services.
In order to stabilize the shoreline, restore the marsh, and enhance the ecological function and integrity of the preserve, Princeton Hydro developed a conceptual and engineering design using living shoreline features to enhance ecological value and reduce erosion. The final conceptual plan for restoration uses tree vane structures to attenuate wave action, foster sediment accretion, and reduce erosion along the coast.
To implement this vision and begin building back marsh, the project team is constructing several Christmas tree breakwaters and Christmas tree vanes that mimic naturally occurring debris structures in tidal systems and enhance habitat opportunity and shelter for aquatic life. Volunteers came together on Saturday, May 11 to help with the construction. The Mayor of Point Pleasant Robert A. Sabosik also attended the event, "The Barnegat Bay is an attribute that we all enjoy, and it's something we have to protect."
After the 2018 holiday season, the Good Sheppard Lutheran Church in Point Pleasant provided space to collect and store donated Christmas trees, which were then moved to the marsh a few days before the event. On the day of the event, recycled Christmas trees were transported from their staged locations on the marsh to the breakwater sections that were previously installed in the water. To transport them across the water to the pilings, volunteers used two methods: by walking a skiff boat loaded with trees through the water to the pilings or by forming assembly line from the shore to pilings to guide floating trees through the water (check out the album below!). Then, they stuffed the Christmas trees between the pilings, securely tied them down, and staked Christmas trees directly into the creek bottom. For extra assurance, the placed and tied heavy bags of used oyster shells on top of the tree line. Oyster shells were donated by local Monmouth County restaurants in an effort to reduce waste streams.
"We really enjoyed participating in this event with American Littoral Society and so many wonderful volunteers,” Christiana L. Pollack, GISP, CFM, Princeton Hydro's Project Manager for this restoration effort. “It is so wonderful to see this project coming to fruition. We’re so proud of our partnership with American Littoral Society and our combined efforts to revitalize and rehabilitate our precious coastal habitats.”
Many thanks to everyone who came out in support of this important restoration effort at Slade Dale Sanctuary American Littoral Society hosts volunteer events throughout the year. Go here to get involved.
The nonprofit Schuylkill River Greenways, in partnership with Berks Nature, Bartram’s Garden, The Schuylkill Center for Environmental Education, Stroud Water Research Center, and Princeton Hydro, is kicking off a Water Quality Monitoring Project for the Schuylkill River on World Habitat Day, Monday, October 5, 2020. This project, focused on the main stem of the river from Berks Nature in Reading to Bartram’s Garden in southwest Philadelphia, is aimed to document the current ecological status and health of the river and seeks to engage and educate a diverse set of river users and residents.
"An important aspect of our mission is to connect communities to the Schuylkill River through recreational and educational activities," said Tim Fenchel, Deputy Director of Schuylkill River Greenways. "To fully achieve the river’s potential, we must help the public understand the current health status and what they can do to continue to improve its quality for this generation and generations to come."
In order to monitor the presence and/or distribution of litter along the Schuylkill River, the team is launching a campaign to recruit “Community Scientists” to conduct 5-minute Visual Monitoring Assessments. Using their mobile device, these volunteers can simply record the trash accumulation or dumping points along a 100-foot section of the Schuylkill River via a user-friendly form accessed via a cell phone: bit.ly/litterform.
“Trash is important to address when talking about the health of a waterway because it’s often the most visually obvious form of pollution. Bacterial and chemical pollution are generally less directly observable, but when we see trash, it instantly informs our impression of a body of water,” said Chloe Wang, River Programs Coordinator at Bartram's Garden. “And, it can point to larger problems. For example, near Bartram’s Garden, a lot of trash washes into the river from combined sewer overflows, which also introduce harmful bacteria into the water. It will be interesting to see how the presence of trash differs along various stretches of the Schuylkill.”
The Community Scientist visual assessments require no formal training and are meant to be a simple effort that any resident can complete. We’ve developed an assessment survey, which can be accessed and submitted via a smartphone or tablet by opening the link in the phone/tablet’s browser.
“This is an opportunity for anyone with an interest in the Schuylkill River to spend time on the river and provide valuable feedback on the conditions of the river,” said David Bressler, Project Facilitator at Stroud Water Research Center. “Schuylkill River Greenways and its partners in this project are looking for motivated and dependable individuals to help them learn about the Schuylkill River and move in positive directions toward making the river more accessible to the community. Support from volunteers is very important and is greatly appreciated."
The goal is to document critical areas of trash accumulation or dumping points in order to guide management efforts to better deal with this pollution. In addition to the multiple-choice questions to rank trash levels and quantities, this platform asks volunteers to submit a photo of the area and collects the GPS location. By utilizing this user-friendly platform, the data collected under this effort will be summarized and visualized by the project team.
“This project is an important study that we can use to connect people back to the river and show that the Schuylkill River is a place to be enjoyed by the entire community surrounding it and beyond,” said Michael Griffith, Education & Watershed Specialist at Berks Nature.
In 1985 the United Nations designated the first Monday of October every year as World Habitat Day. The idea is to reflect on the state of our towns and cities and the basic right of all to adequate shelter and to remind the world of its collective responsibility for the future of the human habitat. By understanding and improving water quality in the Schuylkill River, we are creating a place that enables community members to access public green and open spaces. This effort also supports UN Sustainable Development Goal 11, which aims for resilient, inclusive, safe, diverse cities by 2030.
In addition to the Community Scientist visual assessments, the stakeholder team is conducting water quality sampling and monitoring over the next year at four locations along the main stem of the Schuylkill River. This scientific documentation of critical water quality parameters will be performed by the stakeholder group’s employees and long term volunteers, who are trained in data collection and scientific methods. We will collect data on bacterial concentrations in the river using a combination of 3-M Petrifilm kits and laboratory-based analytical measures. In addition, in-situ temperature, oxygen, pH, and turbidity data will be collected utilizing Mayfly dataloggers.
"Our research shows that residents care about the river, but are not confident whether it is clean or safe to use for recreational activity. So we’ve designed a volunteer survey and scientific water quality assessment to document the ecological health of the Schuylkill River," said Michael Hartshorne, Aquatic Resources Project Manager at Princeton Hydro. "By studying bacterial inputs and identifying hotspots for trash, we can communicate the status of the river, provide recommendations on areas of improvement, and ultimately, change the current public perception of the river."
For the water quality monitoring, Princeton Hydro scientists will provide training to the partner nonprofit organizations’ staff and review the methods and protocols to assure the highest level of quality. This long-term data collection effort is slated to begin this month and continue for approximately one year. The results of this assessment will allow us to determine potential hotspots related to nutrient and bacteria inputs and to understand the overall ecological health of the Schuylkill River.
Overall, through this effort, the stakeholder team hopes to connect residents and communities with the Schuylkill River and to encourage engagement with this special resource.
River herring are diadromous fish, which means they migrate between fresh and salt water. On Long Island in Nassau, New York, they migrate between Mill Pond Creek and the ocean, using Bellmore Creek as a highway. The river herring live much of their adult life in the ocean and travel to the freshwaters of Mill Pond Creek in order to spawn.
There is a dam located at the point where Bellmore Creek meets Mill Pond. When the water level isn’t high enough, the river herring can be blocked from swimming upstream to reach their spawning habitat. This not only has negative implications for river herring species, it also negatively impacts the entire ecosystem. The herring are a vital food source for countless other fish, birds and animals, and play a critical role in transferring marine derived nutrients into surrounding estuarine, freshwater and upland habitats.
River Herring have been documented at the base of the dam at Mill Pond for the past several migration seasons. Bellmore Creek is one of only two-dozen streams on Long Island where remnant runs of this ecologically valuable, diadromous fish still exist.
The project goals not only include increasing river herring spawning habitat, but also are focused on improving the ecological condition of Bellmore Creek, maintaining and enhancing recreational values, and improving site resiliency to climate change and sea level rise.
To provide guidance on the project, Seatuck assembled an advisory committee with representation from Nassau County (dam owner), New York State Office of Parks, NYS Department of Environmental Conservation, Nassau County Soil and Water District, Town of Hempstead, the South Shore Estuary Reserve, Trout Unlimited, The Nature Conservancy, South Shore Audubon, and the Bellmore Civic Association.
On June 8 2021, Seatuck, Nassau County and Princeton Hydro held a virtual meeting to get the public’s input on each of the fish passage designs. Emily Hall, Conservation Policy Advocate for Seatuck, also put together an informative presentation in which she provides a synopsis of Bellmore Creek's history, describes the project goals, and discusses the community engagement process and the results of the public opinion survey. Watch it now:
Additionally, Princeton Hydro completed a site investigation including topographic survey, sediment probing and sampling, and assessment of structures to identify project opportunities and site constraints. Sediment sampling and analysis indicated no major concerns with contamination. By performing analysis of the longitudinal profile, Princeton Hydro determined that the full dam removal (option 3 listed above) was not recommended due to the potential for initiating uncontrolled channel incision below the original river grade into Mill Pond and upstream reaches.
Ultimately, the technical fish ladder (option 2 listed above) was chosen as the most appropriate solution for restoring fish passage to Mill Pond and maintaining existing recreational values. Princeton Hydro is currently developing preliminary engineering design plans for this selected alternative as part of this phase of the project.
The focus on Bellmore Creek is just one of many projects included in Seatuck’s River Revival program, which has sought to clear similarly blocked waterways across Long Island. If you’re interested in learning more about Seatuck’s conservation work and getting involved, click here.
Princeton Hydro has designed, permitted, and overseen solutions for fish passage including the installation of technical and nature-like fishways and the removal of dozens of small and large dams throughout the Northeast. To learn more about our fish passage and dam removal engineering services, click here and check out our blog:
add comment
Δ
Your Full Name * Phone Number * Your Email * Organization Address Message *
By EmailBy Phone
Submit
Couldn’t find a match? Check back often as we post new positions throughout the year.
Array ( [0] => stdClass Object ( [year] => 2023 [month] => 3 [posts] => 4 ) [1] => stdClass Object ( [year] => 2023 [month] => 2 [posts] => 5 ) [2] => stdClass Object ( [year] => 2023 [month] => 1 [posts] => 3 ) [3] => stdClass Object ( [year] => 2022 [month] => 12 [posts] => 6 ) [4] => stdClass Object ( [year] => 2022 [month] => 11 [posts] => 3 ) [5] => stdClass Object ( [year] => 2022 [month] => 10 [posts] => 5 ) [6] => stdClass Object ( [year] => 2022 [month] => 9 [posts] => 2 ) [7] => stdClass Object ( [year] => 2022 [month] => 8 [posts] => 3 ) [8] => stdClass Object ( [year] => 2022 [month] => 7 [posts] => 5 ) [9] => stdClass Object ( [year] => 2022 [month] => 6 [posts] => 3 ) [10] => stdClass Object ( [year] => 2022 [month] => 5 [posts] => 7 ) [11] => stdClass Object ( [year] => 2022 [month] => 4 [posts] => 3 ) [12] => stdClass Object ( [year] => 2022 [month] => 3 [posts] => 8 ) [13] => stdClass Object ( [year] => 2022 [month] => 2 [posts] => 1 ) [14] => stdClass Object ( [year] => 2022 [month] => 1 [posts] => 2 ) [15] => stdClass Object ( [year] => 2021 [month] => 12 [posts] => 5 ) [16] => stdClass Object ( [year] => 2021 [month] => 11 [posts] => 2 ) [17] => stdClass Object ( [year] => 2021 [month] => 10 [posts] => 1 ) [18] => stdClass Object ( [year] => 2021 [month] => 9 [posts] => 5 ) [19] => stdClass Object ( [year] => 2021 [month] => 8 [posts] => 2 ) [20] => stdClass Object ( [year] => 2021 [month] => 7 [posts] => 6 ) [21] => stdClass Object ( [year] => 2021 [month] => 6 [posts] => 5 ) [22] => stdClass Object ( [year] => 2021 [month] => 5 [posts] => 2 ) [23] => stdClass Object ( [year] => 2021 [month] => 4 [posts] => 5 ) [24] => stdClass Object ( [year] => 2021 [month] => 3 [posts] => 1 ) [25] => stdClass Object ( [year] => 2021 [month] => 2 [posts] => 7 ) [26] => stdClass Object ( [year] => 2021 [month] => 1 [posts] => 2 ) [27] => stdClass Object ( [year] => 2020 [month] => 12 [posts] => 4 ) [28] => stdClass Object ( [year] => 2020 [month] => 11 [posts] => 3 ) [29] => stdClass Object ( [year] => 2020 [month] => 10 [posts] => 5 ) [30] => stdClass Object ( [year] => 2020 [month] => 9 [posts] => 1 ) [31] => stdClass Object ( [year] => 2020 [month] => 8 [posts] => 3 ) [32] => stdClass Object ( [year] => 2020 [month] => 7 [posts] => 8 ) [33] => stdClass Object ( [year] => 2020 [month] => 6 [posts] => 3 ) [34] => stdClass Object ( [year] => 2020 [month] => 5 [posts] => 2 ) [35] => stdClass Object ( [year] => 2020 [month] => 4 [posts] => 5 ) [36] => stdClass Object ( [year] => 2020 [month] => 3 [posts] => 3 ) [37] => stdClass Object ( [year] => 2020 [month] => 2 [posts] => 3 ) [38] => stdClass Object ( [year] => 2020 [month] => 1 [posts] => 4 ) [39] => stdClass Object ( [year] => 2019 [month] => 12 [posts] => 3 ) [40] => stdClass Object ( [year] => 2019 [month] => 11 [posts] => 3 ) [41] => stdClass Object ( [year] => 2019 [month] => 10 [posts] => 5 ) [42] => stdClass Object ( [year] => 2019 [month] => 9 [posts] => 3 ) [43] => stdClass Object ( [year] => 2019 [month] => 8 [posts] => 6 ) [44] => stdClass Object ( [year] => 2019 [month] => 7 [posts] => 5 ) [45] => stdClass Object ( [year] => 2019 [month] => 6 [posts] => 4 ) [46] => stdClass Object ( [year] => 2019 [month] => 5 [posts] => 5 ) [47] => stdClass Object ( [year] => 2019 [month] => 4 [posts] => 8 ) [48] => stdClass Object ( [year] => 2019 [month] => 3 [posts] => 2 ) [49] => stdClass Object ( [year] => 2019 [month] => 2 [posts] => 2 ) [50] => stdClass Object ( [year] => 2019 [month] => 1 [posts] => 5 ) [51] => stdClass Object ( [year] => 2018 [month] => 12 [posts] => 5 ) [52] => stdClass Object ( [year] => 2018 [month] => 11 [posts] => 4 ) [53] => stdClass Object ( [year] => 2018 [month] => 10 [posts] => 8 ) [54] => stdClass Object ( [year] => 2018 [month] => 9 [posts] => 3 ) [55] => stdClass Object ( [year] => 2018 [month] => 8 [posts] => 6 ) [56] => stdClass Object ( [year] => 2018 [month] => 7 [posts] => 6 ) [57] => stdClass Object ( [year] => 2018 [month] => 6 [posts] => 7 ) [58] => stdClass Object ( [year] => 2018 [month] => 5 [posts] => 6 ) [59] => stdClass Object ( [year] => 2018 [month] => 4 [posts] => 6 ) [60] => stdClass Object ( [year] => 2018 [month] => 3 [posts] => 5 ) [61] => stdClass Object ( [year] => 2018 [month] => 2 [posts] => 2 ) [62] => stdClass Object ( [year] => 2018 [month] => 1 [posts] => 3 ) [63] => stdClass Object ( [year] => 2017 [month] => 12 [posts] => 3 ) [64] => stdClass Object ( [year] => 2017 [month] => 11 [posts] => 3 ) [65] => stdClass Object ( [year] => 2017 [month] => 10 [posts] => 2 ) [66] => stdClass Object ( [year] => 2017 [month] => 9 [posts] => 2 ) [67] => stdClass Object ( [year] => 2017 [month] => 8 [posts] => 2 ) [68] => stdClass Object ( [year] => 2017 [month] => 7 [posts] => 2 ) [69] => stdClass Object ( [year] => 2017 [month] => 6 [posts] => 1 ) [70] => stdClass Object ( [year] => 2017 [month] => 5 [posts] => 2 ) [71] => stdClass Object ( [year] => 2017 [month] => 4 [posts] => 1 ) [72] => stdClass Object ( [year] => 2017 [month] => 3 [posts] => 1 ) [73] => stdClass Object ( [year] => 2017 [month] => 2 [posts] => 2 ) [74] => stdClass Object ( [year] => 2017 [month] => 1 [posts] => 1 ) [75] => stdClass Object ( [year] => 2016 [month] => 12 [posts] => 2 ) [76] => stdClass Object ( [year] => 2016 [month] => 11 [posts] => 2 ) [77] => stdClass Object ( [year] => 2016 [month] => 10 [posts] => 1 ) [78] => stdClass Object ( [year] => 2016 [month] => 9 [posts] => 1 ) [79] => stdClass Object ( [year] => 2016 [month] => 8 [posts] => 2 ) [80] => stdClass Object ( [year] => 2016 [month] => 7 [posts] => 1 ) [81] => stdClass Object ( [year] => 2016 [month] => 5 [posts] => 2 ) [82] => stdClass Object ( [year] => 2016 [month] => 4 [posts] => 2 ) [83] => stdClass Object ( [year] => 2016 [month] => 3 [posts] => 3 ) [84] => stdClass Object ( [year] => 2016 [month] => 2 [posts] => 2 ) [85] => stdClass Object ( [year] => 2015 [month] => 11 [posts] => 2 ) [86] => stdClass Object ( [year] => 2013 [month] => 8 [posts] => 1 ) [87] => stdClass Object ( [year] => 2013 [month] => 7 [posts] => 2 ) [88] => stdClass Object ( [year] => 2013 [month] => 6 [posts] => 8 ) )
PRINCETON HYDRO
PRINCETON HYDRO