Exeter River Dam
Exeter River Dam is a concrete dam located in Rockingham County, New Hampshire, built in 1927. It carries a Significant hazard potential classification and has a poor condition assessment.
About Exeter River Dam
The primary purpose of Exeter River Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Brentwood Dam Ventures Llc (private). It impounds the Exeter River near Brentwood.
The dam stands 15 feet tall and stretches 130 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 296 acre-feet, and collects water from a drainage area of 60 square miles. Completed in 1927, the structure is well-established, with more than 75 years of service.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 05/26/2021.
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Location
| State | New Hampshire |
| County | Rockingham |
| Nearest City | Brentwood |
| River/Stream | Exeter River |
| Coordinates | 42.96942, -71.08509 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 130 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 296 acre-ft |
| Max Storage | 296 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 60 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | BRENTWOOD DAM VENTURES LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 05/26/2021 |
| Emergency Action Plan | No |
Identifiers
| NID ID | NH00293 |
| Federal ID | NH00293 |
| More Info | State Dam Safety Program |