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WP_Query Object ( [query] => Array ( [key_word] => pond-lake ) [query_vars] => Array ( [key_word] => pond-lake [error] => [m] => [p] => 0 [post_parent] => [subpost] => [subpost_id] => [attachment] => [attachment_id] => 0 [name] => [pagename] => [page_id] => 0 [second] => [minute] => [hour] => [day] => 0 [monthnum] => 0 [year] => 0 [w] => 0 [category_name] => [tag] => [cat] => [tag_id] => [author] => [author_name] => [feed] => [tb] => [paged] => 1 [meta_key] => [meta_value] => [preview] => [s] => [sentence] => [title] => [fields] => all [menu_order] => [embed] => [category__in] => Array ( ) [category__not_in] => Array ( ) [category__and] => Array ( ) [post__in] => Array ( ) [post__not_in] => Array ( ) [post_name__in] => Array ( ) [tag__in] => Array ( ) [tag__not_in] => Array ( ) [tag__and] => Array ( ) [tag_slug__in] => Array ( ) [tag_slug__and] => Array ( ) [post_parent__in] => Array ( ) [post_parent__not_in] => Array ( ) [author__in] => Array ( ) [author__not_in] => Array ( ) [search_columns] => Array ( ) [ignore_sticky_posts] => [suppress_filters] => [cache_results] => 1 [update_post_term_cache] => 1 [update_menu_item_cache] => [lazy_load_term_meta] => 1 [update_post_meta_cache] => 1 [post_type] => [posts_per_page] => 10 [nopaging] => [comments_per_page] => 5 [no_found_rows] => [taxonomy] => key_word [term] => pond-lake [order] => DESC ) [tax_query] => WP_Tax_Query Object ( [queries] => Array ( [0] => Array ( [taxonomy] => key_word [terms] => Array ( [0] => pond-lake ) [field] => slug [operator] => IN [include_children] => 1 ) ) [relation] => AND [table_aliases:protected] => Array ( [0] => ph_term_relationships ) [queried_terms] => Array ( [key_word] => Array ( [terms] => Array ( [0] => pond-lake ) [field] => slug ) ) [primary_table] => ph_posts [primary_id_column] => ID ) [meta_query] => WP_Meta_Query Object ( [queries] => Array ( ) [relation] => [meta_table] => [meta_id_column] => [primary_table] => [primary_id_column] => [table_aliases:protected] => Array ( ) [clauses:protected] => Array ( ) [has_or_relation:protected] => ) [date_query] => [queried_object] => WP_Term Object ( [term_id] => 1288 [name] => Pond & Lake [slug] => pond-lake [term_group] => 0 [term_taxonomy_id] => 1288 [taxonomy] => key_word [description] => [parent] => 0 [count] => 30 [filter] => raw [term_order] => 0 ) [queried_object_id] => 1288 [request] => SELECT SQL_CALC_FOUND_ROWS ph_posts.ID FROM ph_posts LEFT JOIN ph_term_relationships ON (ph_posts.ID = ph_term_relationships.object_id) WHERE 1=1 AND ( ph_term_relationships.term_taxonomy_id IN (1288) ) AND ((ph_posts.post_type = 'project' AND (ph_posts.post_status = 'publish' OR ph_posts.post_status = 'acf-disabled'))) GROUP BY ph_posts.ID ORDER BY ph_posts.menu_order, ph_posts.post_date DESC LIMIT 0, 10 [posts] => Array ( [0] => WP_Post Object ( [ID] => 17721 [post_author] => 1 [post_date] => 2025-07-01 15:26:32 [post_date_gmt] => 2025-07-01 15:26:32 [post_content] => Lake Holiday is a 249-acre impoundment that acts as the aesthetic center point and primary ecological feature for the Lake Holiday Country Club (LHCC) in Cross Junction, Virginia. The lake is used for boating, swimming, and fishing for the surrounding community. In 2016, the lake experienced a cyanobacteria-driven harmful algal bloom (HAB) which impacted contact recreation in the lake, as well as aesthetic value. In 2017, the LHCC engaged Princeton Hydro to understand the driving mechanisms behind the bloom and to recommend preventative management techniques to reduce the chances of future bloom formation. The first step in this process was water quality testing of the lake inclusive of in-situ, discrete laboratory, and plankton analyses. This study also included stormwater monitoring of the incoming tributaries throughout the lake. Following this study, Princeton Hydro modeled the watershed-based load of nutrients and hydrology in addition to evaluating the internal phosphorus load. The results of this effort showed the watershed load of phosphorus was the largest driver of algal growth. Following this effort, Princeton Hydro provided design of two emergent wetland best management practices (BMPs) at the mouths of Isaacs Creek and Yeiders Run through 30% completion. [gallery link="none" columns="2" size="medium" ids="17717,17718"] In addition to the projects mentioned above, Princeton Hydro has developed a HAB monitoring, response, and management plan for the community. This plan provides specific volunteer-based monitoring that should be conducted to detect a bloom and includes subsequent information for community notification, follow-up testing, and management. Throughout these endeavors, the LHCC has hired Princeton Hydro to monitor the lakes’ water quality to track its ecological condition over time and document improvements as management measures are implemented. [post_title] => Lake Holiday: Lake & Watershed Management [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => lake-holiday-lake-watershed-management [to_ping] => [pinged] => [post_modified] => 2025-07-01 15:26:32 [post_modified_gmt] => 2025-07-01 15:26:32 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=17721 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [1] => WP_Post Object ( [ID] => 17715 [post_author] => 1 [post_date] => 2025-07-01 14:59:08 [post_date_gmt] => 2025-07-01 14:59:08 [post_content] => The Cooper River Watershed is a 39.5 square mile tributary to the Delaware River within the Delaware River Basin. It is characterized by extensive residential and commercial development and a number of highly degraded waterbodies. Near the mouth of the Cooper River, a tidal dam forms Cooper River Lake (CRL). This 192-acre public lake has a Total Maximum Daily Load (TMDL) for total phosphorus (TP) and a variety of other nonpoint source pollutants. Immediately upstream of CRL are Wallworth Lake and Evans Pond which suffer the same impairments as CRL. CRL is the centerpiece of Camden County’s 347-acre Cooper River Park; Evans Pond and Wallworth Lake are within Camden County’s Wallworth Park (56 acres). These waterbodies are part of Camden County’s greenway and provide recreational opportunities to the overburdened communities (OBCs) that surround them. These waterbodies also provide significant water quality services to the watershed, such as regional stormwater attenuation and sediment trapping. Unfortunately, the highly degraded condition of this watershed is well documented. Further, in 2020 a harmful algal bloom (HAB) was confirmed by NJDEP within Hopkins Pond, a waterbody upstream of CRL, with toxin levels posing a high risk of adverse health effects. Camden County Soil Conservation District (CCSCD) was awarded funding through NJDEP’s Lake Restoration Grant program to develop a USEPA 9-Element Plus 1 Watershed Implementation Plan (9E+1 WIP) for the CRL watershed, including Evans Pond, Wallworth Lake, and Hopkins Pond. The goal of the WIP is to develop a strategy to cost effectively identify and address the potential watershed impacts through in-lake and watershed-based management activities, with designs to address impacts driven by climate change. Through stakeholder engagement and the review of historical data, the project team is determining sources of pollutant loading in the watershed. The team will utilize the results, and the data collected during the water quality monitoring and watershed assessment to characterize and prioritize areas that and locations that would be optimal for best management practices and green infrastructure. Ultimately, the project team will develop a comprehensive Cooper River Lake Watershed Implementation Plan. Princeton Hydro is in the process of completing a 1-year detailed sampling and surveying exercise of the CRL watershed for the purpose of collecting the data needed to assess the lake and streams within and design the lake/stream protection and watershed management plan. In addition to the above mentioned tasks, Princeton Hydro also conducted bathymetric assessments of CRL, Evans Pond, and Wallworth Lake. [post_title] => Watershed Implementation Plan for Cooper River Lake [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => watershed-implementation-plan-for-cooper-river-lake [to_ping] => [pinged] => [post_modified] => 2025-07-01 14:59:08 [post_modified_gmt] => 2025-07-01 14:59:08 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=17715 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [2] => WP_Post Object ( [ID] => 16984 [post_author] => 1 [post_date] => 2025-01-30 15:59:42 [post_date_gmt] => 2025-01-30 15:59:42 [post_content] => Memorial Pond is a 0.3-acre stormwater runoff basin located in Mount Arlington, New Jersey. The pond discharges into Glen Brook, which flows into Lake Hopatcong. The pond receives sheet flow of stormwater from the adjacent road, which contributes to nutrient and sediment loading, in turn reducing water quality in both Memorial Pond and Lake Hopatcong. In addition, the pond’s steeply-sloped shoreline was absent of stabilizing vegetation, leading to an increase in erosion. Through a grant secured from the New Jersey Department of Environmental Protection, 400 native plants were installed along the western shoreline of Memorial Pond by a team of more than 20 volunteers from Mt. Arlington Department of Public Works, Lake Hopatcong Commission, and Princeton Hydro. [gallery link="none" ids="13421,13436,13394"] The plant selection and layout were designed to take into account the steep slope and the presence of mature, existing trees. A focus was placed on selecting regionally native plant species to restore the understory and stabilize the eroding shoreline. Herbivory protection fencing was also installed to ensure plant establishment. [gallery link="none" ids="13427,13426,13428"] The volunteer planting team participated in an educational training given by Princeton Hydro staff, covering how to properly install plants on a slope to reduce scour and ensure good root system-soil contact. Emphasizing the importance of maintenance in ensuring project success, Princeton Hydro provided a written maintenance manual. The manual provides guidance on seasonal care of the plantings; removal of the herbivory protection fencing; pruning; watering; and troubleshooting advice for common challenges to support the long term success of the project. [post_title] => Memorial Pond Stabilization Planting [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => memorial-pond-stabilization-planting [to_ping] => [pinged] => [post_modified] => 2025-01-30 15:59:42 [post_modified_gmt] => 2025-01-30 15:59:42 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=16984 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [3] => WP_Post Object ( [ID] => 15994 [post_author] => 1 [post_date] => 2024-12-02 14:40:59 [post_date_gmt] => 2024-12-02 14:40:59 [post_content] => Tanglwood Lake, located in Pike County, PA, is an impoundment created by Tanglwood Lake Dam, which is owned and maintained by the Tanglwood Lakes Community Association, Inc. (TLCA). Classified as a High-Quality, Cold-Water Fishery (HQ-CWF) for water quality protection, it accepts flow from Lake Wallenpaupack via Kleinhans Creek. The drainage area to the lake is approximately 0.6 square miles (384 Acres). The lake itself is approximately 26.0 acres. Princeton Hydro has been contracted to conduct lake management services for TLCA since 2016 and was contracted to perform consulting and engineering services for design, permitting, bidding, construction administration, and construction oversight for the partial sediment removal from Tanglwood Lake through hydraulic dredging and onsite disposal. Princeton Hydro conducted a bathymetric survey and performed sediment sampling to determine the volume and consistency of the sediment as well as the feasibility of onsite dewatering. Building on this previous work, wetland delineation and a site survey were conducted to collect data to inform the engineering design, regulatory compliance, contractor solicitation, and construction. Princeton Hydro’s regulatory experts prepared all applicable state and federal permits, including PADEP Dam Safety; Soil Erosion and Sediment Control Plan Certification; and NPDES Stormwater Permit for the sediment removal; dewatering; and disposal on the adjacent lot. [gallery columns="2" link="none" ids="15990,15991"] The engineering design for sediment removal and dewatering was completed, along with the engineering design for the disposal area of the dewatered dredged material. The dredging occurred over multiple events, with approximately 2,000 cubic yards of sediment and organics removed from the eastern portion of the lake. This sediment was dewatered using geotubes placed on a gravel bed. Once dewatered and all approvals were obtained, the sediment was relocated to the adjacent lot to create a gentle slope off the roadway and to make the site more park-like for the community. [post_title] => Tanglwood Lake Maintenance Dredging [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => tanglwood-lake-maintenance-dredging [to_ping] => [pinged] => [post_modified] => 2024-12-02 14:44:43 [post_modified_gmt] => 2024-12-02 14:44:43 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=15994 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [4] => WP_Post Object ( [ID] => 15491 [post_author] => 1 [post_date] => 2024-08-01 05:12:40 [post_date_gmt] => 2024-08-01 05:12:40 [post_content] => Select staff of Princeton Hydro conducted a Phase I Diagnostic and Feasibility Study of Lake Luxembourg under the Clean Lakes (314) Program with the funds awarded by the U.S. Environmental Protection Agency (USEPA). Lake Luxembourg is located within the Core Creek Watershed with the majority of the watershed located in Core Creek County Park, one of the most heavily utilized parks in Bucks County, PA. Princeton Hydro conducted in-lake and watershed monitoring activities, quantified the annual pollutant (nitrogen, phosphorus, and suspended solids) loads, and developed a Restoration and Management Plan for the lake and watershed. These data were used by Princeton Hydro with the PA Department of Environmental Protection (PADEP) to develop a total phosphorus Total Maximum Daily Load (TMDL) for the lake. After the Phase I Study was completed, Princeton Hydro designed and implemented a number of Best Management Practices (BMPs). Princeton Hydro assisted the Bucks County Department of Parks and Recreation in obtaining additional funds through the USEPA Non-point Source Pollution Program (319) for the implementation of agricultural BMPs throughout the watershed. A shift from agricultural to residential and commercial land use prompted the development of another NPS project to address these issues. For this, Princeton Hydro assisted the Bucks County Conservation District (BCCD) in obtaining additional funds through the 319 Program. The funds were used for five stream bank and shoreline stabilization projects within the Core Creek County Park. Princeton Hydro also completed another 319 project that implemented a number of small retrofits to remove phosphorus from stormwater, installed additional vegetative shoreline buffers with the aid of students from Neshaminy Middle School, and created a pocket wetland BMP to continue to reduce the total phosphorous (TP) loads entering the lake. Finally, Princeton Hydro and Bucks County embarked on an ambitious project to restore the inlet area of the lake, termed the Conservation Pool, into a naturalized stormwater treatment facility. This 17-acre forebay area had filled in with sediment over the decades and had limited capacity to treat the nutrient rich inflowing water. Using nature as a guide, Princeton Hydro designed and implemented a plan to dredge 15,000 cubic yards of phosphorus-rich sediment. Additionally, an emergent wetland system was designed and is currently being installed to better retain sediment and phosphorus before it reaches the main body of the lake. This system included infrastructure to ensure the ongoing maintenance and functionality of this BMP. Princeton Hydro continues to work closely with all of the stakeholders within the watershed to improve the water quality of Lake Luxembourg and restore Core Creek and its riparian corridor. For example, Princeton Hydro will work with the BCCD in reassessing and updating the stailization practices in other sections of the watershed that have been impacted by both climate change and invasive species. [post_title] => Lake Luxembourg and Core Creek Feasibility Study and BMP Implementation [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => lake-luxembourg-and-core-creek-feasibility-study-and-bmp-implementation [to_ping] => [pinged] => [post_modified] => 2024-11-20 15:48:45 [post_modified_gmt] => 2024-11-20 15:48:45 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=15491 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [5] => WP_Post Object ( [ID] => 14923 [post_author] => 1 [post_date] => 2024-05-08 13:40:52 [post_date_gmt] => 2024-05-08 13:40:52 [post_content] => In response to Township request, the Township of Rockaway (Township) includes multiple private lakes and their respective lake associations within the Township limits. Although these lakes are private, the Township wished to take an active role in the management of the surrounding watersheds of these lakes, as the lakes themselves are managed by their respective associations. This regional approach to lake management has recently been informally suggested by staff of both the New Jersey Department of Environmental Protection and the New Jersey Highlands Council and has been implemented in other New Jersey Highland communities such as Ringwood Borough and West Milford Township. As a result, the agreed upon list of lakes listed in this assessment were: Green Pond, Egbert Lake, Durham Pond, Lake Emma, Camp Lewis Lake, Lake Telemark, Lake Ames, Mount Hope Pond, Mount Hope Lake, White Meadow Lake, and Fox’s Pond. As part of this project, a Watershed-based Assessment was completed, with the following objectives met: 1. Identification, quantification, and prioritization of watershed-based factors which may cause eutrophication; 2. Identification of watershed management measures needed to address general causes of water quality impairments; 3. Identification of the relative cost of the recommended general watershed management measures; 4. The generation of a schedule, based on priority, for the implementation of the recommended watershed management measures; and 5. A general assessment report was authored at the conclusion of the study. Funding for the Watershed-based Assessment for the Lakes of the Township of Rockaway was provided by the New Jersey Highlands Council through a grant reimbursement to the Township. The Township of Rockaway reviewed and, where feasible, implemented any suggested actions surrounding the lakes. The final report, provided to the Township by Princeton Hydro, identified and prioritized watershed management techniques and measures that are best suited for immediate and long-term implementation, as well as provided cost projections for implementation in both the short-term and long-term. The Township has since indicated that it intends to apply for Federal and State grant funding, using the plan as its cornerstone, as soon as programs are announced. [gallery link="none" columns="2" size="medium" ids="14918,14917"] [post_title] => Township of Rockaway Watershed Assessment [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => township-of-rockaway-watershed-assessment [to_ping] => [pinged] => [post_modified] => 2024-05-08 13:49:38 [post_modified_gmt] => 2024-05-08 13:49:38 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=14923 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [6] => WP_Post Object ( [ID] => 14599 [post_author] => 1 [post_date] => 2024-03-06 21:39:13 [post_date_gmt] => 2024-03-06 21:39:13 [post_content] => The Manasquan Reservoir is a 770-acre pump-storage impoundment that is owned and operated by the New Jersey Water Supply Authority (NJWSA). The reservoir experienced eutrophication as evidenced by cyanobacteria blooms. Additionally, the non-native hydrilla (Hydrilla verticillata) and fanwort (Cabomba caroliniana) have become established throughout the reservoir’s 204-acre littoral zone. Recognizing the potential severity of problems attributable to either reoccurring cyanobacteria blooms or the continued spread of invasive macrophytes, the NJWSA sought to develop a comprehensive management plan to be implemented in a proactive manner to protect and manage the reservoir’s water quality and minimize the recreational impacts attributable to invasive aquatic plants. [gallery link="none" ids="14608,14606,14604,14601,14605,14603"] As part of this three-year (2018 – 2020) work effort, Princeton Hydro designed and implemented an extensive aquatic plant management plan including a bathymetric survey; design and implementation of a point-intercept based sampling methodology utilizing rake tosses; additional survey of spatial extent of macrophytes with SCUBA divers; and sediment core collection and analysis for monoecious hydrilla tubers. All plant data collected as part of this study was georeferenced in the field and assembled into a geo-referenced database showing the distribution, extent, and change in time of hydrilla and other aquatic plants throughout the three-year monitoring period. Additionally, Princeton Hydro conducted several water quality monitoring events throughout the 2018 growing season. The project has documented the presence, extent, and abundance of all aquatic plants in the reservoir with particular focus on hydrilla and fanwort. To complete the project, all data was integrated into the functional Manasquan Reservoir Plant and Algae Management Plan, aiming to eradicate or manage certain species of plants to improve the ecological integrity of the reservoir while optimizing raw water quality for consumptive end use. Princeton Hydro continued to monitor water quality within Masaquan Reservoir throughout 2019. [post_title] => Manasquan Reservoir Aquatic Plant and Cyanobacteria Management Plans [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => manasquan-reservoir-aquatic-plant-and-cyanobacteria-management-plans [to_ping] => [pinged] => [post_modified] => 2024-03-06 21:39:57 [post_modified_gmt] => 2024-03-06 21:39:57 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=14599 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [7] => WP_Post Object ( [ID] => 14586 [post_author] => 1 [post_date] => 2024-02-06 20:58:15 [post_date_gmt] => 2024-02-06 20:58:15 [post_content] => Princeton Hydro was hired by the Town of Scituate and MA Division of Ecological Restoration to provide engineering feasibility, design, permitting, and construction oversight services for the dam removal in Scituate, MA. The project was a MA DER priority project due to its high potential for restoration of diadromous fish. The dam was a head of tide dam with rainbow smelt spawning habitat just below the dam. The site had significant historic value, including an old mill building once owned by the great, great, great grandfather of Abraham Lincoln. The site was also bifurcated by the historic “Boundary Line,” a border established in 1640 which denoted the boundary between the colonies of Massachusetts and New Plymouth. Significant Section 106 historic and archeological consultation was therefore incorporated into this dam removal project. The project also included significant outreach to the local community, primarily made up of abutting property owners concerned about the loss of the impoundment behind the dam. [gallery link="none" columns="2" ids="14588,14590"] The project was initiated due to the need to pave Mordechai Lincoln Road, but paving was not possible without first repairing the dam’s overflow pipe which extended under the historic mill building. A project partnership was then developed with numerous state agencies and environmental organizations, led by MA DER and the Town of Scituate, to find funding for the removal of the dam and the restoration of Bound Brook. The dam removal was complicated by the existence of an active water main directly upstream of the dam. As part of the design, our design team had to relocate the water main as well as slip line the decaying pipe under the historic mill building. Passive restoration methods were utilized, allowing Bound Brook to find its own diverse channel pattern within the dewatered impoundment. The design plans depicted multiple potential paths where the channel might form. At Princeton Hydro we practice a “less is more” design approach to restoration, placing our faith in the natural channel forming processes of a river whenever possible. [post_title] => Hunters Pond Dam Removal [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => hunters-pond-dam-removal-2 [to_ping] => [pinged] => [post_modified] => 2024-03-06 21:05:29 [post_modified_gmt] => 2024-03-06 21:05:29 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=14586 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [8] => WP_Post Object ( [ID] => 13644 [post_author] => 1 [post_date] => 2023-09-20 11:14:36 [post_date_gmt] => 2023-09-20 11:14:36 [post_content] => In response to Township request, the Township of West Milford (Township) includes multiple private lakes and their respective lake associations within the Township limits. Although these lakes are private, the Township wished to take an active role in the management of the surrounding watersheds of these lakes, as the lakes themselves are managed by their respective associations. This regional approach to lake management has recently been informally suggested by staff of both the New Jersey Department of Environmental Protection (NJDEP) and the New Jersey Highlands Council (NJHC) and has been implemented in other New Jersey Highland communities such as Ringwood Borough and Rockaway Township. [caption id="attachment_13646" align="aligncenter" width="600"] Pinecliff Lake[/caption] As a result, the agreed upon list of lakes listed in this SOW were: High Crest Lake, Algonquin Waters, Lake Lookover, Kitchell Lake, Lindys Lake, Mt. Laurel Lake, Shady Lake, Wonder Lake, Mount Glen Lakes (upper/Lower), Carpi Lake, Pinecliff Lake, Van Nostrand Lake, Upper Greenwood Lake, Post Brook Farms, Farm Crest Acres, Mt. Springs Lake, Forest Hill Park, Johns Lake, Gordon Lake, and Bubbling Springs Lake. As part of this project, a Watershed-based Assessment was completed, with the following objectives met: Identification, quantification, and prioritization of watershed-based factors which may cause eutrophication; Identification of watershed management measures needed to address general causes of water quality impairments; Identification of the relative cost of the recommended general watershed management measures; The generation of a schedule, based on priority, for the implementation of the recommended watershed management measures; and A general assessment report was authored at the conclusion of the study. Funding for the Watershed-based Assessment for the Lakes of the Township of West Milford was provided by the New Jersey Highlands Council through a grant reimbursement to the Township. The Township of West Milford reviewed and, where feasible, implemented any suggested actions surrounding the lakes. The final report, provided to the Township by Princeton Hydro, identified and prioritized watershed management techniques and measures that are best suited for immediate and long-term implementation, as well as provided cost projections for implementation in both the short-term and long-term. The Township has since indicated that it intends to apply for Federal and State grant funding, using the plan as its cornerstone, as soon as programs are announced. [post_title] => Township of West Milford Watershed Assessment [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => township-of-west-milford-watershed-assessment [to_ping] => [pinged] => [post_modified] => 2023-09-20 11:18:18 [post_modified_gmt] => 2023-09-20 11:18:18 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=13644 [menu_order] => 2 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [9] => WP_Post Object ( [ID] => 13299 [post_author] => 1 [post_date] => 2023-07-21 19:26:34 [post_date_gmt] => 2023-07-21 19:26:34 [post_content] => Oradell Reservoir is a 720-acre waterbody owned and operated by Veolia, providing over 750,000 people with potable water. While it is a run-of-the-river reservoir with a flushing rate of approximately 2 weeks, blooms of cyanobacteria that produce gas vacuoles, such as Aphanizomenon, impact its water quality from spring to late fall. These gas vacuole-cyanobacteria migrate through the water column on a daily basis, entering the multiple intakes and directly impacting the quality of the raw water entering the treatment plant. To minimize these impacts on the raw water quality, a destratification system has been in operation for over 17 years to disrupt these concentrated blooms. The destratification system also provides additional water quality benefits and Princeton Hydro was the organization who originally proposed the installation of the destratification system as part of an earlier Management Plan. Veolia recognized that the existing and aging destratification system was requiring more maintenance and repair. Additionally, aeration technology has substantially improved over the last 17 years in both operation and energy efficiency. Thus, Veolia contracted with Princeton Hydro to assess various aeration technologies, design a new system, submit for any required permits and oversee the installation of the new system. In 2020 Princeton Hydro conducted an analysis of various water quality parameters prior to (1999 to 2004) and after (2016-2020) the destratification system was installed. It quantified and confirmed that the system provides a number of benefits including increasing filter run times due to lower algal densities, a reduction in taste and odor compounds such as manganese, and limiting the amount of hypolimnetic phosphorus. This analysis also included an assessment of various aeration technologies. It was decided to remove the old existing aeration system and replace it with a HydroLogic Airlift aeration system. Princeton Hydro worked with the selected sub-contractor to design the CAD specifications and have them reviewed / approved by a certified professional engineer. Princeton Hydro then submitted for all of the necessary permits, which are currently being reviewed by NJDEP and other required agencies. Once the permits are approved, Princeton Hydro will oversee and work with the sub-contractor in the installation of the Airlift system, which is tentatively scheduled to be installed in the first half of 2023. [gallery link="none" columns="2" ids="13300,13305"] [post_title] => Oradell Reservoir Aeration Assessment and Design [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => oradell-reservoir-aeration-assessment-and-design [to_ping] => [pinged] => [post_modified] => 2023-07-21 19:28:47 [post_modified_gmt] => 2023-07-21 19:28:47 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=13299 [menu_order] => 4 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) ) [post_count] => 10 [current_post] => -1 [before_loop] => 1 [in_the_loop] => [post] => WP_Post Object ( [ID] => 17721 [post_author] => 1 [post_date] => 2025-07-01 15:26:32 [post_date_gmt] => 2025-07-01 15:26:32 [post_content] => Lake Holiday is a 249-acre impoundment that acts as the aesthetic center point and primary ecological feature for the Lake Holiday Country Club (LHCC) in Cross Junction, Virginia. The lake is used for boating, swimming, and fishing for the surrounding community. In 2016, the lake experienced a cyanobacteria-driven harmful algal bloom (HAB) which impacted contact recreation in the lake, as well as aesthetic value. In 2017, the LHCC engaged Princeton Hydro to understand the driving mechanisms behind the bloom and to recommend preventative management techniques to reduce the chances of future bloom formation. The first step in this process was water quality testing of the lake inclusive of in-situ, discrete laboratory, and plankton analyses. This study also included stormwater monitoring of the incoming tributaries throughout the lake. Following this study, Princeton Hydro modeled the watershed-based load of nutrients and hydrology in addition to evaluating the internal phosphorus load. The results of this effort showed the watershed load of phosphorus was the largest driver of algal growth. Following this effort, Princeton Hydro provided design of two emergent wetland best management practices (BMPs) at the mouths of Isaacs Creek and Yeiders Run through 30% completion. [gallery link="none" columns="2" size="medium" ids="17717,17718"] In addition to the projects mentioned above, Princeton Hydro has developed a HAB monitoring, response, and management plan for the community. This plan provides specific volunteer-based monitoring that should be conducted to detect a bloom and includes subsequent information for community notification, follow-up testing, and management. Throughout these endeavors, the LHCC has hired Princeton Hydro to monitor the lakes’ water quality to track its ecological condition over time and document improvements as management measures are implemented. 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Lake Holiday is a 249-acre impoundment that acts as the aesthetic center point and primary ecological feature for the Lake Holiday Country Club (LHCC) in Cross Junction, Virginia. The lake is used for boating, swimming, and fishing for the surrounding community.
In 2016, the lake experienced a cyanobacteria-driven harmful algal bloom (HAB) which impacted contact recreation in the lake, as well as aesthetic value. In 2017, the LHCC engaged Princeton Hydro to understand the driving mechanisms behind the bloom and to recommend preventative management techniques to reduce the chances of future bloom formation. The first step in this process was water quality testing of the lake inclusive of in-situ, discrete laboratory, and plankton analyses. This study also included stormwater monitoring of the incoming tributaries throughout the lake. Following this study, Princeton Hydro modeled the watershed-based load of nutrients and hydrology in addition to evaluating the internal phosphorus load. The results of this effort showed the watershed load of phosphorus was the largest driver of algal growth. Following this effort, Princeton Hydro provided design of two emergent wetland best management practices (BMPs) at the mouths of Isaacs Creek and Yeiders Run through 30% completion.
In addition to the projects mentioned above, Princeton Hydro has developed a HAB monitoring, response, and management plan for the community. This plan provides specific volunteer-based monitoring that should be conducted to detect a bloom and includes subsequent information for community notification, follow-up testing, and management.
Throughout these endeavors, the LHCC has hired Princeton Hydro to monitor the lakes’ water quality to track its ecological condition over time and document improvements as management measures are implemented.
The Cooper River Watershed is a 39.5 square mile tributary to the Delaware River within the Delaware River Basin. It is characterized by extensive residential and commercial development and a number of highly degraded waterbodies. Near the mouth of the Cooper River, a tidal dam forms Cooper River Lake (CRL). This 192-acre public lake has a Total Maximum Daily Load (TMDL) for total phosphorus (TP) and a variety of other nonpoint source pollutants. Immediately upstream of CRL are Wallworth Lake and Evans Pond which suffer the same impairments as CRL.
CRL is the centerpiece of Camden County’s 347-acre Cooper River Park; Evans Pond and Wallworth Lake are within Camden County’s Wallworth Park (56 acres). These waterbodies are part of Camden County’s greenway and provide recreational opportunities to the overburdened communities (OBCs) that surround them. These waterbodies also provide significant water quality services to the watershed, such as regional stormwater attenuation and sediment trapping. Unfortunately, the highly degraded condition of this watershed is well documented. Further, in 2020 a harmful algal bloom (HAB) was confirmed by NJDEP within Hopkins Pond, a waterbody upstream of CRL, with toxin levels posing a high risk of adverse health effects.
Camden County Soil Conservation District (CCSCD) was awarded funding through NJDEP’s Lake Restoration Grant program to develop a USEPA 9-Element Plus 1 Watershed Implementation Plan (9E+1 WIP) for the CRL watershed, including Evans Pond, Wallworth Lake, and Hopkins Pond. The goal of the WIP is to develop a strategy to cost effectively identify and address the potential watershed impacts through in-lake and watershed-based management activities, with designs to address impacts driven by climate change.
Through stakeholder engagement and the review of historical data, the project team is determining sources of pollutant loading in the watershed. The team will utilize the results, and the data collected during the water quality monitoring and watershed assessment to characterize and prioritize areas that and locations that would be optimal for best management practices and green infrastructure. Ultimately, the project team will develop a comprehensive Cooper River Lake Watershed Implementation Plan. Princeton Hydro is in the process of completing a 1-year detailed sampling and surveying exercise of the CRL watershed for the purpose of collecting the data needed to assess the lake and streams within and design the lake/stream protection and watershed management plan. In addition to the above mentioned tasks, Princeton Hydro also conducted bathymetric assessments of CRL, Evans Pond, and Wallworth Lake.
Memorial Pond is a 0.3-acre stormwater runoff basin located in Mount Arlington, New Jersey. The pond discharges into Glen Brook, which flows into Lake Hopatcong. The pond receives sheet flow of stormwater from the adjacent road, which contributes to nutrient and sediment loading, in turn reducing water quality in both Memorial Pond and Lake Hopatcong. In addition, the pond’s steeply-sloped shoreline was absent of stabilizing vegetation, leading to an increase in erosion. Through a grant secured from the New Jersey Department of Environmental Protection, 400 native plants were installed along the western shoreline of Memorial Pond by a team of more than 20 volunteers from Mt. Arlington Department of Public Works, Lake Hopatcong Commission, and Princeton Hydro. [gallery link="none" ids="13421,13436,13394"]
The plant selection and layout were designed to take into account the steep slope and the presence of mature, existing trees. A focus was placed on selecting regionally native plant species to restore the understory and stabilize the eroding shoreline. Herbivory protection fencing was also installed to ensure plant establishment. [gallery link="none" ids="13427,13426,13428"]
The volunteer planting team participated in an educational training given by Princeton Hydro staff, covering how to properly install plants on a slope to reduce scour and ensure good root system-soil contact. Emphasizing the importance of maintenance in ensuring project success, Princeton Hydro provided a written maintenance manual. The manual provides guidance on seasonal care of the plantings; removal of the herbivory protection fencing; pruning; watering; and troubleshooting advice for common challenges to support the long term success of the project. [post_title] => Memorial Pond Stabilization Planting [post_excerpt] => [post_status] => publish [comment_status] => closed [ping_status] => closed [post_password] => [post_name] => memorial-pond-stabilization-planting [to_ping] => [pinged] => [post_modified] => 2025-01-30 15:59:42 [post_modified_gmt] => 2025-01-30 15:59:42 [post_content_filtered] => [post_parent] => 0 [guid] => https://princetonhydro.com/?post_type=project&p=16984 [menu_order] => 0 [post_type] => project [post_mime_type] => [comment_count] => 0 [filter] => raw ) [3] => WP_Post Object ( [ID] => 15994 [post_author] => 1 [post_date] => 2024-12-02 14:40:59 [post_date_gmt] => 2024-12-02 14:40:59 [post_content] =>
Tanglwood Lake, located in Pike County, PA, is an impoundment created by Tanglwood Lake Dam, which is owned and maintained by the Tanglwood Lakes Community Association, Inc. (TLCA). Classified as a High-Quality, Cold-Water Fishery (HQ-CWF) for water quality protection, it accepts flow from Lake Wallenpaupack via Kleinhans Creek. The drainage area to the lake is approximately 0.6 square miles (384 Acres). The lake itself is approximately 26.0 acres.
Princeton Hydro has been contracted to conduct lake management services for TLCA since 2016 and was contracted to perform consulting and engineering services for design, permitting, bidding, construction administration, and construction oversight for the partial sediment removal from Tanglwood Lake through hydraulic dredging and onsite disposal. Princeton Hydro conducted a bathymetric survey and performed sediment sampling to determine the volume and consistency of the sediment as well as the feasibility of onsite dewatering. Building on this previous work, wetland delineation and a site survey were conducted to collect data to inform the engineering design, regulatory compliance, contractor solicitation, and construction. Princeton Hydro’s regulatory experts prepared all applicable state and federal permits, including PADEP Dam Safety; Soil Erosion and Sediment Control Plan Certification; and NPDES Stormwater Permit for the sediment removal; dewatering; and disposal on the adjacent lot.
The engineering design for sediment removal and dewatering was completed, along with the engineering design for the disposal area of the dewatered dredged material. The dredging occurred over multiple events, with approximately 2,000 cubic yards of sediment and organics removed from the eastern portion of the lake. This sediment was dewatered using geotubes placed on a gravel bed. Once dewatered and all approvals were obtained, the sediment was relocated to the adjacent lot to create a gentle slope off the roadway and to make the site more park-like for the community.
Select staff of Princeton Hydro conducted a Phase I Diagnostic and Feasibility Study of Lake Luxembourg under the Clean Lakes (314) Program with the funds awarded by the U.S. Environmental Protection Agency (USEPA). Lake Luxembourg is located within the Core Creek Watershed with the majority of the watershed located in Core Creek County Park, one of the most heavily utilized parks in Bucks County, PA. Princeton Hydro conducted in-lake and watershed monitoring activities, quantified the annual pollutant (nitrogen, phosphorus, and suspended solids) loads, and developed a Restoration and Management Plan for the lake and watershed. These data were used by Princeton Hydro with the PA Department of Environmental Protection (PADEP) to develop a total phosphorus Total Maximum Daily Load (TMDL) for the lake.
After the Phase I Study was completed, Princeton Hydro designed and implemented a number of Best Management Practices (BMPs). Princeton Hydro assisted the Bucks County Department of Parks and Recreation in obtaining additional funds through the USEPA Non-point Source Pollution Program (319) for the implementation of agricultural BMPs throughout the watershed. A shift from agricultural to residential and commercial land use prompted the development of another NPS project to address these issues. For this, Princeton Hydro assisted the Bucks County Conservation District (BCCD) in obtaining additional funds through the 319 Program. The funds were used for five stream bank and shoreline stabilization projects within the Core Creek County Park.
Princeton Hydro also completed another 319 project that implemented a number of small retrofits to remove phosphorus from stormwater, installed additional vegetative shoreline buffers with the aid of students from Neshaminy Middle School, and created a pocket wetland BMP to continue to reduce the total phosphorous (TP) loads entering the lake.
Finally, Princeton Hydro and Bucks County embarked on an ambitious project to restore the inlet area of the lake, termed the Conservation Pool, into a naturalized stormwater treatment facility. This 17-acre forebay area had filled in with sediment over the decades and had limited capacity to treat the nutrient rich inflowing water. Using nature as a guide, Princeton Hydro designed and implemented a plan to dredge 15,000 cubic yards of phosphorus-rich sediment. Additionally, an emergent wetland system was designed and is currently being installed to better retain sediment and phosphorus before it reaches the main body of the lake. This system included infrastructure to ensure the ongoing maintenance and functionality of this BMP.
Princeton Hydro continues to work closely with all of the stakeholders within the watershed to improve the water quality of Lake Luxembourg and restore Core Creek and its riparian corridor. For example, Princeton Hydro will work with the BCCD in reassessing and updating the stailization practices in other sections of the watershed that have been impacted by both climate change and invasive species.
In response to Township request, the Township of Rockaway (Township) includes multiple private lakes and their respective lake associations within the Township limits. Although these lakes are private, the Township wished to take an active role in the management of the surrounding watersheds of these lakes, as the lakes themselves are managed by their respective associations.
This regional approach to lake management has recently been informally suggested by staff of both the New Jersey Department of Environmental Protection and the New Jersey Highlands Council and has been implemented in other New Jersey Highland communities such as Ringwood Borough and West Milford Township.
As a result, the agreed upon list of lakes listed in this assessment were: Green Pond, Egbert Lake, Durham Pond, Lake Emma, Camp Lewis Lake, Lake Telemark, Lake Ames, Mount Hope Pond, Mount Hope Lake, White Meadow Lake, and Fox’s Pond.
As part of this project, a Watershed-based Assessment was completed, with the following objectives met:
1. Identification, quantification, and prioritization of watershed-based factors which may cause eutrophication;
2. Identification of watershed management measures needed to address general causes of water quality impairments;
Funding for the Watershed-based Assessment for the Lakes of the Township of Rockaway was provided by the New Jersey Highlands Council through a grant reimbursement to the Township. The Township of Rockaway reviewed and, where feasible, implemented any suggested actions surrounding the lakes. The final report, provided to the Township by Princeton Hydro, identified and prioritized watershed management techniques and measures that are best suited for immediate and long-term implementation, as well as provided cost projections for implementation in both the short-term and long-term. The Township has since indicated that it intends to apply for Federal and State grant funding, using the plan as its cornerstone, as soon as programs are announced.
The Manasquan Reservoir is a 770-acre pump-storage impoundment that is owned and operated by the New Jersey Water Supply Authority (NJWSA). The reservoir experienced eutrophication as evidenced by cyanobacteria blooms. Additionally, the non-native hydrilla (Hydrilla verticillata) and fanwort (Cabomba caroliniana) have become established throughout the reservoir’s 204-acre littoral zone. Recognizing the potential severity of problems attributable to either reoccurring cyanobacteria blooms or the continued spread of invasive macrophytes, the NJWSA sought to develop a comprehensive management plan to be implemented in a proactive manner to protect and manage the reservoir’s water quality and minimize the recreational impacts attributable to invasive aquatic plants.
As part of this three-year (2018 – 2020) work effort, Princeton Hydro designed and implemented an extensive aquatic plant management plan including a bathymetric survey; design and implementation of a point-intercept based sampling methodology utilizing rake tosses; additional survey of spatial extent of macrophytes with SCUBA divers; and sediment core collection and analysis for monoecious hydrilla tubers. All plant data collected as part of this study was georeferenced in the field and assembled into a geo-referenced database showing the distribution, extent, and change in time of hydrilla and other aquatic plants throughout the three-year monitoring period. Additionally, Princeton Hydro conducted several water quality monitoring events throughout the 2018 growing season.
The project has documented the presence, extent, and abundance of all aquatic plants in the reservoir with particular focus on hydrilla and fanwort. To complete the project, all data was integrated into the functional Manasquan Reservoir Plant and Algae Management Plan, aiming to eradicate or manage certain species of plants to improve the ecological integrity of the reservoir while optimizing raw water quality for consumptive end use. Princeton Hydro continued to monitor water quality within Masaquan Reservoir throughout 2019.
Princeton Hydro was hired by the Town of Scituate and MA Division of Ecological Restoration to provide engineering feasibility, design, permitting, and construction oversight services for the dam removal in Scituate, MA. The project was a MA DER priority project due to its high potential for restoration of diadromous fish. The dam was a head of tide dam with rainbow smelt spawning habitat just below the dam. The site had significant historic value, including an old mill building once owned by the great, great, great grandfather of Abraham Lincoln. The site was also bifurcated by the historic “Boundary Line,” a border established in 1640 which denoted the boundary between the colonies of Massachusetts and New Plymouth. Significant Section 106 historic and archeological consultation was therefore incorporated into this dam removal project. The project also included significant outreach to the local community, primarily made up of abutting property owners concerned about the loss of the impoundment behind the dam.
The project was initiated due to the need to pave Mordechai Lincoln Road, but paving was not possible without first repairing the dam’s overflow pipe which extended under the historic mill building. A project partnership was then developed with numerous state agencies and environmental organizations, led by MA DER and the Town of Scituate, to find funding for the removal of the dam and the restoration of Bound Brook.
The dam removal was complicated by the existence of an active water main directly upstream of the dam. As part of the design, our design team had to relocate the water main as well as slip line the decaying pipe under the historic mill building. Passive restoration methods were utilized, allowing Bound Brook to find its own diverse channel pattern within the dewatered impoundment.
The design plans depicted multiple potential paths where the channel might form. At Princeton Hydro we practice a “less is more” design approach to restoration, placing our faith in the natural channel forming processes of a river whenever possible.
In response to Township request, the Township of West Milford (Township) includes multiple private lakes and their respective lake associations within the Township limits. Although these lakes are private, the Township wished to take an active role in the management of the surrounding watersheds of these lakes, as the lakes themselves are managed by their respective associations.
This regional approach to lake management has recently been informally suggested by staff of both the New Jersey Department of Environmental Protection (NJDEP) and the New Jersey Highlands Council (NJHC) and has been implemented in other New Jersey Highland communities such as Ringwood Borough and Rockaway Township.
As a result, the agreed upon list of lakes listed in this SOW were: High Crest Lake, Algonquin Waters, Lake Lookover, Kitchell Lake, Lindys Lake, Mt. Laurel Lake, Shady Lake, Wonder Lake, Mount Glen Lakes (upper/Lower), Carpi Lake, Pinecliff Lake, Van Nostrand Lake, Upper Greenwood Lake, Post Brook Farms, Farm Crest Acres, Mt. Springs Lake, Forest Hill Park, Johns Lake, Gordon Lake, and Bubbling Springs Lake.
Funding for the Watershed-based Assessment for the Lakes of the Township of West Milford was provided by the New Jersey Highlands Council through a grant reimbursement to the Township. The Township of West Milford reviewed and, where feasible, implemented any suggested actions surrounding the lakes. The final report, provided to the Township by Princeton Hydro, identified and prioritized watershed management techniques and measures that are best suited for immediate and long-term implementation, as well as provided cost projections for implementation in both the short-term and long-term. The
Township has since indicated that it intends to apply for Federal and State grant funding, using the plan as its cornerstone, as soon as programs are announced.
Oradell Reservoir is a 720-acre waterbody owned and operated by Veolia, providing over 750,000 people with potable water. While it is a run-of-the-river reservoir with a flushing rate of approximately 2 weeks, blooms of cyanobacteria that produce gas vacuoles, such as Aphanizomenon, impact its water quality from spring to late fall. These gas vacuole-cyanobacteria migrate through the water column on a daily basis, entering the multiple intakes and directly impacting the quality of the raw water entering the treatment plant. To minimize these impacts on the raw water quality, a destratification system has been in operation for over 17 years to disrupt these concentrated blooms. The destratification system also provides additional water quality benefits and Princeton Hydro was the organization who originally proposed the installation of the destratification system as part of an earlier Management Plan.
Veolia recognized that the existing and aging destratification system was requiring more maintenance and repair. Additionally, aeration technology has substantially improved over the last 17 years in both operation and energy efficiency. Thus, Veolia contracted with Princeton Hydro to assess various aeration technologies, design a new system, submit for any required permits and oversee the installation of the new system.
In 2020 Princeton Hydro conducted an analysis of various water quality parameters prior to (1999 to 2004) and after (2016-2020) the destratification system was installed. It quantified and confirmed that the system provides a number of benefits including increasing filter run times due to lower algal densities, a reduction in taste and odor compounds such as manganese, and limiting the amount of hypolimnetic phosphorus. This analysis also included an assessment of various aeration technologies.
It was decided to remove the old existing aeration system and replace it with a HydroLogic Airlift aeration system. Princeton Hydro worked with the selected sub-contractor to design the CAD specifications and have them reviewed / approved by a certified professional engineer. Princeton Hydro then submitted for all of the necessary permits, which are currently being reviewed by NJDEP and other required agencies. Once the permits are approved, Princeton Hydro will oversee and work with the sub-contractor in the installation of the Airlift system, which is tentatively scheduled to be installed in the first half of 2023.
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