Darlington No. 1
Darlington No. 1 is an earth dam located in Converse County, Wyoming, built in 1956. It carries a Low hazard potential classification and has a fair condition assessment.
About Darlington No. 1
The primary purpose of Darlington 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 Whitaker Ranches (private). It impounds the La Bonte Creek near Guernsey.
The dam stands 20 feet tall and stretches 715 feet across, creates a reservoir covering 10 acres, and has a maximum storage capacity of 125 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 06/16/2025.
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Location
| State | Wyoming |
| County | Converse |
| Nearest City | Guernsey |
| River/Stream | La Bonte Creek |
| Coordinates | 42.53900, -105.46400 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 715 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 125 acre-ft |
| Max Storage | 125 acre-ft |
| Normal Storage | 66 acre-ft |
| Surface Area | 10 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Whitaker Ranches |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/16/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00264 |
| Federal ID | WY00264 |
| More Info | State Dam Safety Program |