Twin Buttes
Twin Buttes is an earth dam located in Albany County, Wyoming, built in 1972. It carries a Low hazard potential classification and has a fair condition assessment.
About Twin Buttes
The primary purpose of Twin Buttes 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 Wyoming Game And Fish Commission (state). It impounds the Mortensen Draw near Laramie.
The dam stands 8 feet tall and stretches 1,100 feet across, creates a reservoir covering 334 acres, and has a maximum storage capacity of 6,250 acre-feet. Completed in 1972, 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 06/18/2024.
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Location
| State | Wyoming |
| County | Albany |
| Nearest City | Laramie |
| River/Stream | Mortensen Draw |
| Coordinates | 41.23778, -105.84833 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 1,100 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 6,250 acre-ft |
| Max Storage | 6,250 acre-ft |
| Normal Storage | 3,912 acre-ft |
| Surface Area | 334 acres |
| Max Discharge | 330 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fish and Wildlife Pond |
| Owner | WYOMING GAME AND FISH COMMISSION |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/18/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00088 |
| Federal ID | WY00088 |
| More Info | State Dam Safety Program |