SNOFLO



GROPPS LAKE DAM

RESERVOIR LEVELS
Back Creek
April 12, 2025


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Gropps Lake Dam, located in Bordentown, New Jersey, is a captivating site for water resource and climate enthusiasts. Built in 1900, this earth dam stands at a height of 25 feet and spans a length of 485 feet, creating a reservoir with a storage capacity of 549 acre-feet. The dam serves the primary purpose of recreation, offering a surface area of 41 acres for visitors to enjoy. The surrounding area boasts a drainage area of 7.9 square miles, with Back Creek feeding into the reservoir.

Managed by the local government and regulated by the New Jersey Department of Environmental Protection, Gropps Lake Dam has a low hazard potential and is currently in satisfactory condition. Despite its age, the dam has undergone regular inspections with the last assessment taking place in 2009. With a reassuring condition assessment and a history of safe operation, the dam continues to provide recreational opportunities for residents and visitors alike. Its location in Hamilton Township, within Mercer County, New Jersey, offers a picturesque setting for outdoor activities and wildlife observation.

For those interested in water infrastructure and environmental conservation, Gropps Lake Dam presents a fascinating case study of a historic earth dam that has stood the test of time. With its serene reservoir, ample storage capacity, and regulated maintenance practices, the dam serves as both a recreational haven and a testament to effective dam management. As climate change impacts water resources and infrastructure, Gropps Lake Dam stands as a reminder of the importance of sustainable water management practices in safeguarding our natural ecosystems.

Year_Completed 1900
Dam_Height 25
River_Or_Stream Back Creek
Dam_Length 485
Primary_Dam_Type Earth
Surface_Area 41
Drainage_Area 7.9
Nid_Storage 549
Hazard_Potential Low
Nid_Height 25
       

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