Angle Detention Dam is a gravity dam located in Park County, Wyoming. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 1,258 ft long, taller than 68% 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 Angle Detention Dam
The primary purpose of Angle Detention Dam is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by Doi BLM (federal).
The dam stands 30 feet tall and stretches 1,258 feet across, creates a reservoir covering 40 acres, and has a maximum storage capacity of 327 acre-feet.
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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 08/06/2016. That was over 10 years ago.
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Location
| State | Wyoming |
| County | Park |
| Coordinates | 44.83049, -109.06444 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 30 ft |
| Dam Length | 1,258 ft |
Storage & Hydraulics
| NID Storage | 477 acre-ft |
| Max Storage | 327 acre-ft |
| Normal Storage | 477 acre-ft |
| Surface Area | 40 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | Doi BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/06/2016 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01400 |
| Federal ID | WY01400 |
| More Info | State Dam Safety Program |