Number One Pond
Number One Pond is a concrete dam located in York County, Maine, built in 1912. It carries a Low hazard potential classification and has a fair condition assessment.
About Number One Pond
The primary purpose of Number One Pond 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 Sanford (local government). It impounds the Mousam near Sanford.
The dam stands 14 feet tall and stretches 245 feet across, creates a reservoir covering 45 acres, has a maximum storage capacity of 508 acre-feet, and collects water from a drainage area of 41 square miles. Completed in 1912, the structure is over a century old.
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 10/27/2011. That was over 14 years ago.
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Location
| State | Maine |
| County | York |
| Nearest City | Sanford |
| River/Stream | Mousam |
| Coordinates | 43.44126, -70.77424 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 245 ft |
| Year Completed | 1912 (114 years old) |
Storage & Hydraulics
| NID Storage | 508 acre-ft |
| Max Storage | 508 acre-ft |
| Normal Storage | 278 acre-ft |
| Surface Area | 45 acres |
| Drainage Area | 41 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Sanford |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/27/2011 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ME00185 |
| Federal ID | ME00185 |
| More Info | State Dam Safety Program |