Upper Blackhorse Dam
Upper Blackhorse Dam is an earth dam located in Spokane County, Washington, built in 1960. It carries a Low hazard potential classification and has a fair condition assessment.
About Upper Blackhorse Dam
The primary purpose of Upper Blackhorse Dam is fish and wildlife pond. The dam creates habitat for fish and wildlife, supporting local ecosystems and potentially serving conservation goals. The dam is owned by Us Fish And Wildlife Service (federal). It impounds the Rock Creek.
The dam stands 10 feet tall and stretches 160 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 215 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1960, the structure is well into its service life at over 50 years 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 10/28/2013. That was over 12 years ago.
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Location
| State | Washington |
| County | Spokane |
| River/Stream | Rock Creek |
| Coordinates | 47.43045, -117.54134 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 160 ft |
| Year Completed | 1960 (66 years old) |
Storage & Hydraulics
| NID Storage | 215 acre-ft |
| Max Storage | 215 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 728 cfs |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | US FISH AND WILDLIFE SERVICE |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 10/28/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00750 |
| Federal ID | WA00750 |
| More Info | State Dam Safety Program |