Fairview Extension is an earth dam located in Big Horn County, Wyoming, built in 1972. It carries a Significant hazard potential classification.
Dam profile
NID height · 37 ft37 ft tall and 2,250 ft long, taller than 83% 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 Fairview Extension
The primary purpose of Fairview Extension is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Fairview Extension Res. Co. (mac Wardell) (private). It impounds the Wardell Draw near Greybull.
The dam stands 37 feet tall and stretches 2,250 feet across, creates a reservoir covering 141 acres, has a maximum storage capacity of 2,198 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1972, the structure is well into its service life at over 50 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. The most recent inspection on record was 05/12/2021.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Wyoming |
| County | Big Horn |
| Nearest City | Greybull |
| River/Stream | Wardell Draw |
| Coordinates | 44.34910, -108.30790 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 37 ft |
| Dam Length | 2,250 ft |
| Year Completed | 1972 (54 years old) |
Storage & Hydraulics
| NID Storage | 2,198 acre-ft |
| Max Storage | 2,198 acre-ft |
| Normal Storage | 1,411 acre-ft |
| Surface Area | 141 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 85 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Fairview Extension Res. Co. (mac Wardell) |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Last Inspection | 05/12/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01162 |
| Federal ID | WY01162 |
| More Info | State Dam Safety Program |