Sandstone Dam is a gravity dam located in Big Horn County, Wyoming, built in 2003. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
Dam profile
NID height · 28 ft28 ft tall and 489 ft long, taller than 62% 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 Sandstone Dam
Sandstone Dam is a dam in Big Horn, Wyoming. The dam is owned by Doi BLM (federal). It impounds the Greybull River near Otto Wy.
The dam stands 28 feet tall and stretches 489 feet across, creates a reservoir covering 66 acres, has a maximum storage capacity of 1,231 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2003, the structure is relatively new.
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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 08/04/2016. That was over 10 years ago.
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Location
| State | Wyoming |
| County | Big Horn |
| Nearest City | Otto Wy |
| River/Stream | Greybull River |
| Coordinates | 44.36843, -108.30208 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 28 ft |
| Dam Length | 489 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 1,231 acre-ft |
| Max Storage | 1,231 acre-ft |
| Surface Area | 66 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 10 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 08/04/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01161 |
| Federal ID | WY01161 |
| More Info | State Dam Safety Program |