Enl. Johnson 34-4-4377 is an earth dam located in Johnson County, Wyoming, built in 2006. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 368 ft long, taller than 80% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Enl. Johnson 34-4-4377
The primary purpose of Enl. Johnson 34-4-4377 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dry Fork Land & Livestock (dee Johnson) (private). It impounds the Big Bullwhacker Creek near Irving Sheep Camp.
The dam stands 35 feet tall and stretches 368 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 106 acre-feet, and collects water from a drainage area of 18 square miles. Completed in 2006, the structure is relatively new.
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 08/23/2023.
At 35 feet, this dam is taller than 80% of dams nationwide.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Irving Sheep Camp |
| River/Stream | Big Bullwhacker Creek |
| Coordinates | 43.72194, -106.11528 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 25 ft |
| Dam Length | 368 ft |
| Year Completed | 2006 (20 years old) |
Storage & Hydraulics
| NID Storage | 106 acre-ft |
| Max Storage | 106 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 18 sq mi |
| Max Discharge | 3,754 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Dry Fork Land & Livestock (dee Johnson) |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 08/23/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02367 |
| Federal ID | WY02367 |
| More Info | State Dam Safety Program |