Amwell No. 1 Dam
Amwell No. 1 Dam is an earth dam located in Hunterdon County, New Jersey. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Amwell No. 1 Dam
The primary purpose of Amwell No. 1 Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Henry Nelson (private). It impounds the Alexauken Creek-tr.
The dam stands 22 feet tall and stretches 280 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 1 square miles.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 10/11/2024.
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Location
| State | New Jersey |
| County | Hunterdon |
| River/Stream | Alexauken Creek-tr |
| Coordinates | 40.40457, -74.91305 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 280 ft |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 156 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Henry Nelson |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/11/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NJ00521 |
| Federal ID | NJ00521 |
| More Info | State Dam Safety Program |