Tank Farm is an earth dam located in Laramie County, Wyoming, built in 1983. It carries a Significant hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 540 ft long, taller than 80% 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 embankment section and the water level is illustrative.
About Tank Farm
The primary purpose of Tank Farm 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 Laramie County Board of Commissioners (local government). It impounds the Tank Farm Draw near Cheyenne.
The dam stands 35 feet tall and stretches 540 feet across, creates a reservoir covering 2 acres, and has a storage capacity of 13 acre-feet. Completed in 1983, the structure is 43 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 04/13/2023.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Cheyenne |
| River/Stream | Tank Farm Draw |
| Coordinates | 41.10306, -104.82917 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 540 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 13 acre-ft |
| Normal Storage | 13 acre-ft |
| Surface Area | 2 acres |
| Max Discharge | 68 cfs |
| Spillway Type | None |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Laramie County Board of Commissioners |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 04/13/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01906 |
| Federal ID | WY01906 |
| More Info | State Dam Safety Program |