Upper Hackett Dam
Upper Hackett Dam is a gravity dam located in Natrona County, Wyoming, built in 1967. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.
About Upper Hackett Dam
The primary purpose of Upper Hackett 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). It impounds the Hackett Creek.
The dam stands 32 feet tall and stretches 505 feet across, creates a reservoir covering 13 acres, has a maximum storage capacity of 22 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1967, 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 unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. The most recent inspection on record was 07/22/2017.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Hackett Creek |
| Coordinates | 43.38019, -106.93804 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 32 ft |
| Dam Length | 505 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 22 acre-ft |
| Max Storage | 22 acre-ft |
| Normal Storage | 19 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 559 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Unsatisfactory |
| Last Inspection | 07/22/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01451 |
| Federal ID | WY01451 |
| More Info | State Dam Safety Program |