Henderson Drain Detention
Henderson Drain Detention is an earth dam located in Laramie County, Wyoming, built in 1987. It carries a Low hazard potential classification and has a poor condition assessment.
About Henderson Drain Detention
The primary purpose of Henderson Drain Detention 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 City Of Cheyenne (state). It impounds the Henderson Drain Tr. Crow Creek near Cheyenne.
The dam stands 10 feet tall and stretches 1,250 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 126 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1987, the structure is 39 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 04/13/2023.
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Location
| State | Wyoming |
| County | Laramie |
| Nearest City | Cheyenne |
| River/Stream | Henderson Drain Tr. Crow Creek |
| Coordinates | 41.12889, -104.75611 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 1,250 ft |
| Year Completed | 1987 (39 years old) |
Storage & Hydraulics
| NID Storage | 126 acre-ft |
| Max Storage | 126 acre-ft |
| Normal Storage | 101 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 171 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | CITY OF CHEYENNE |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 04/13/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01688 |
| Federal ID | WY01688 |
| More Info | State Dam Safety Program |