Bradshaw Detention Dam #3 is a gravity dam located in Custer County, Idaho. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 374 ft long, taller than 76% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Bradshaw Detention Dam #3
The primary purpose of Bradshaw Detention Dam #3 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 Doi BLM (federal). It impounds the Bradshaw Gulch near Rural Ranch.
The dam stands 33 feet tall and stretches 374 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 1 square miles.
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. The most recent inspection on record was 07/18/2012. That was over 14 years ago.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Idaho |
| County | Custer |
| Nearest City | Rural Ranch |
| River/Stream | Bradshaw Gulch |
| Coordinates | 44.32067, -114.21769 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 33 ft |
| Dam Length | 374 ft |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Max Storage | 20 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 271 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 07/18/2012 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | ID00461 |
| Federal ID | ID00461 |
| More Info | State Dam Safety Program |