South Fork Dam
South Fork Dam is a gravity dam located in Natrona County, Wyoming, built in 1964. It carries a Low hazard potential classification and has a poor condition assessment.
About South Fork Dam
The primary purpose of South Fork 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 South Fork Okie Draw.
The dam stands 28 feet tall and stretches 531 feet across, creates a reservoir covering 5 acres, and has a maximum storage capacity of 14 acre-feet. Completed in 1964, 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 07/21/2017.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Natrona |
| River/Stream | Trib South Fork Okie Draw |
| Coordinates | 43.26750, -107.07087 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 28 ft |
| Dam Length | 531 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 28 acre-ft |
| Max Storage | 14 acre-ft |
| Normal Storage | 28 acre-ft |
| Surface Area | 5 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/21/2017 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01437 |
| Federal ID | WY01437 |
| More Info | State Dam Safety Program |