Todd Lake Dam
Todd Lake Dam is a concrete dam located in Merrimack County, New Hampshire, built in 1858. It carries a Significant hazard potential classification and has a poor condition assessment.
About Todd Lake Dam
The primary purpose of Todd Lake Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Lake Todd Village District (local government). It impounds the Ring Brook near Bradford.
The dam stands 17 feet tall and stretches 211 feet across, creates a reservoir covering 198 acres, has a maximum storage capacity of 1,347 acre-feet, and collects water from a drainage area of 19 square miles. Completed in 1858, the structure is one of the older dams in the region, with over a century and a half 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. An emergency action plan is in place for this dam. The most recent inspection on record was 11/01/2019.
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Location
| State | New Hampshire |
| County | Merrimack |
| Nearest City | Bradford |
| River/Stream | Ring Brook |
| Coordinates | 43.27000, -71.96770 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 211 ft |
| Year Completed | 1858 (168 years old) |
Storage & Hydraulics
| NID Storage | 1,347 acre-ft |
| Max Storage | 1,347 acre-ft |
| Normal Storage | 336 acre-ft |
| Surface Area | 198 acres |
| Drainage Area | 19 sq mi |
Ownership & Safety
| Purpose | Recreation |
| Owner | LAKE TODD VILLAGE DISTRICT |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 11/01/2019 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NH00288 |
| Federal ID | NH00288 |
| More Info | State Dam Safety Program |