Haywire No. 1
Haywire No. 1 is an earth dam located in Converse County, Wyoming, built in 1986. It carries a Low hazard potential classification and has a fair condition assessment.
About Haywire No. 1
The primary purpose of Haywire No. 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Vollman Ranches, Inc., C/o Bob Vollman (private). It impounds the Dry Fk Sand Cr, Tr No Platte R near Douglas.
The dam stands 26 feet tall and stretches 800 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 119 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1986, the structure is 40 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 06/20/2024.
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Location
| State | Wyoming |
| County | Converse |
| Nearest City | Douglas |
| River/Stream | Dry Fk Sand Cr, Tr No Platte R |
| Coordinates | 42.87556, -105.64222 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 800 ft |
| Year Completed | 1986 (40 years old) |
Storage & Hydraulics
| NID Storage | 119 acre-ft |
| Max Storage | 119 acre-ft |
| Normal Storage | 78 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,924 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | VOLLMAN RANCHES, INC., C/O BOB VOLLMAN |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/20/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01999 |
| Federal ID | WY01999 |
| More Info | State Dam Safety Program |