Francis
Francis is a dam located in Elmore County, Idaho, built in 1914. It carries a Significant hazard potential classification and has a fair condition assessment.
About Francis
The primary purpose of Francis is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is private-owned. It impounds the Negro Creek Camas Creek near Hill City.
The dam stands 33 feet tall and stretches 390 feet across, creates a reservoir covering 40 acres, has a storage capacity of 330 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1914, the structure is over a century old.
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 06/02/2020.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | Idaho |
| County | Elmore |
| Nearest City | Hill City |
| River/Stream | Negro Creek Camas Creek |
| Coordinates | 43.33090, -115.12700 |
Physical Characteristics
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 390 ft |
| Year Completed | 1914 (112 years old) |
Storage & Hydraulics
| NID Storage | 330 acre-ft |
| Normal Storage | 330 acre-ft |
| Surface Area | 40 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 220 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/02/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00026 |
| Federal ID | ID00026 |
| More Info | State Dam Safety Program |