Pass is an earth dam located in Johnson County, Wyoming, built in 1959. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 36 ft36 ft tall and 1,030 ft long, taller than 82% 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 Pass
The primary purpose of Pass is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Pass Creek Ranch and Cattle, LLC (private). It impounds the Pass Creek near Arvada.
The dam stands 36 feet tall and stretches 1,030 feet across, creates a reservoir covering 37 acres, and has a maximum storage capacity of 526 acre-feet. Completed in 1959, 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 06/20/2024.
At 36 feet, this dam is taller than 82% of dams nationwide.
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Location
| State | Wyoming |
| County | Johnson |
| Nearest City | Arvada |
| River/Stream | Pass Creek |
| Coordinates | 43.77700, -106.75800 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 36 ft |
| Dam Length | 1,030 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 526 acre-ft |
| Max Storage | 526 acre-ft |
| Normal Storage | 305 acre-ft |
| Surface Area | 37 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Pass Creek Ranch and Cattle, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/20/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00539 |
| Federal ID | WY00539 |
| More Info | State Dam Safety Program |