Alkali Dam
Alkali Dam is a gravity dam located in Natrona County, Wyoming, built in 1967. It carries a Low hazard potential classification and has a fair condition assessment.
About Alkali Dam
The primary purpose of Alkali 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 Trib Alkali Creek.
The dam stands 35 feet tall and stretches 801 feet across, creates a reservoir covering 13 acres, and has a maximum storage capacity of 116 acre-feet. 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 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 07/22/2017.
At 35 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Trib Alkali Creek |
| Coordinates | 43.33376, -106.85595 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 35 ft |
| Dam Length | 801 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 116 acre-ft |
| Max Storage | 116 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 13 acres |
| Max Discharge | 700 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/22/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01454 |
| Federal ID | WY01454 |
| More Info | State Dam Safety Program |