Gropps Lake Dam
Low HazardSatisfactory ConditionEmergency Action Plan: Not Required
Location
| State | New Jersey |
| County | Mercer |
| Nearest City | Bordentown |
| River/Stream | Back Creek |
| Coordinates | 40.18665, -74.69022 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 485 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 549 acre-ft |
| Max Storage | 549 acre-ft |
| Normal Storage | 211 acre-ft |
| Surface Area | 41 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 1,900 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Township of Hamilton |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/22/2023 |
| Emergency Action Plan | Not Required |