C. White No. 1 is an earth dam located in Campbell County, Wyoming, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 31 ft31 ft tall and 1,950 ft long, taller than 72% 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 C. White No. 1
The primary purpose of C. White 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 Kc Ranch LLC (private). It impounds the Cottonwood Creek near Powderville, Mt.
The dam stands 31 feet tall and stretches 1,950 feet across, creates a reservoir covering 50 acres, and has a maximum storage capacity of 704 acre-feet. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 07/31/2025.
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Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Powderville, Mt |
| River/Stream | Cottonwood Creek |
| Coordinates | 44.42360, -105.19470 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 1,950 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 704 acre-ft |
| Max Storage | 704 acre-ft |
| Normal Storage | 409 acre-ft |
| Surface Area | 50 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Kc Ranch LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 07/31/2025 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY00917 |
| Federal ID | WY00917 |
| More Info | State Dam Safety Program |