Hancock
Hancock is a dam located in Adams County, Idaho, built in 1931. It carries a Significant hazard potential classification and has a fair condition assessment.
About Hancock
The primary purpose of Hancock is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is state-owned. It impounds the Little Creek Little Salmon River near Meadows.
The dam stands 29 feet tall and stretches 170 feet across, creates a reservoir covering 21 acres, has a storage capacity of 198 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1931, 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 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 09/20/2017.
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Location
| State | Idaho |
| County | Adams |
| Nearest City | Meadows |
| River/Stream | Little Creek Little Salmon River |
| Coordinates | 44.90450, -116.21640 |
Physical Characteristics
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 170 ft |
| Year Completed | 1931 (95 years old) |
Storage & Hydraulics
| NID Storage | 198 acre-ft |
| Normal Storage | 198 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 5 sq mi |
| Max Discharge | 291 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 09/20/2017 |
| Emergency Action Plan | No |
Identifiers
| NID ID | ID00145 |
| Federal ID | ID00145 |
| More Info | State Dam Safety Program |