Stony Brook W.s. # 5 (baldwin) Dam is an earth dam located in Mercer County, New Jersey. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 14 ft14 ft tall and 467 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Stony Brook W.s. # 5 (baldwin) Dam
The primary purpose of Stony Brook W.s. # 5 (baldwin) Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Division of Fish & Wildlife (state). It impounds the Baldwin Creek.
The dam stands 14 feet tall and stretches 467 feet across, creates a reservoir covering 18 acres, has a maximum storage capacity of 249 acre-feet, and collects water from a drainage area of 2 square miles.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 06/20/2024.
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Location
| State | New Jersey |
| County | Mercer |
| River/Stream | Baldwin Creek |
| Coordinates | 40.34110, -74.78000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 467 ft |
Storage & Hydraulics
| NID Storage | 249 acre-ft |
| Max Storage | 249 acre-ft |
| Normal Storage | 79 acre-ft |
| Surface Area | 18 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Division of Fish & Wildlife |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/20/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NJ00388 |
| Federal ID | NJ00388 |
| More Info | State Dam Safety Program |