Horn
Horn is an earth dam located in Johnson County, Wyoming, built in 1956. It carries a Low hazard potential classification and has a fair condition assessment.
About Horn
The primary purpose of Horn is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Ramsbottom Ranch (private). It impounds the Horn Creek near Hwy 196.
The dam stands 45 feet tall and stretches 814 feet across, creates a reservoir covering 15 acres, and has a maximum storage capacity of 270 acre-feet. Completed in 1956, 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 06/07/2023.
At 45 feet, this dam is taller than 91% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Hwy 196 |
| River/Stream | Horn Creek |
| Coordinates | 43.89833, -106.75056 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 814 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 270 acre-ft |
| Max Storage | 270 acre-ft |
| Normal Storage | 186 acre-ft |
| Surface Area | 15 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | RAMSBOTTOM RANCH |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/07/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00777 |
| Federal ID | WY00777 |
| More Info | State Dam Safety Program |