Ek Addition No. 1 Dam
Ek Addition No. 1 Dam is a gravity dam located in Natrona County, Wyoming, built in 1966. It carries a Low hazard potential classification and has a poor condition assessment.
About Ek Addition No. 1 Dam
The primary purpose of Ek Addition No. 1 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 Ek Creek.
The dam stands 29 feet tall and stretches 790 feet across, creates a reservoir covering 16 acres, and has a maximum storage capacity of 103 acre-feet. Completed in 1966, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 07/19/2017.
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Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Ek Creek |
| Coordinates | 43.22933, -107.24409 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 29 ft |
| Dam Length | 790 ft |
| Year Completed | 1966 (60 years old) |
Storage & Hydraulics
| NID Storage | 103 acre-ft |
| Max Storage | 103 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 16 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/19/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02567 |
| Federal ID | WY02567 |
| More Info | State Dam Safety Program |