Simmons
Simmons is an earth dam located in Johnson County, Wyoming, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
About Simmons
The primary purpose of Simmons is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Steele Creek Llc (private). It impounds the Simmons Draw.
The dam stands 24 feet tall and stretches 600 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 80 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 08/24/2022.
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Location
| State | Wyoming |
| County | Johnson |
| River/Stream | Simmons Draw |
| Coordinates | 43.96040, -106.77860 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 600 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 80 acre-ft |
| Max Storage | 80 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 8 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | STEELE CREEK LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/24/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01859 |
| Federal ID | WY01859 |
| More Info | State Dam Safety Program |