Floyd is an earth dam located in Campbell County, Wyoming, built in 1950. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 25 ft25 ft tall and 1,063 ft long, taller than 50% 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 Floyd
The primary purpose of Floyd is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Floyd Land & Livestock (private). It impounds the Prairie Dog Creek near Unnamed Ranch.
The dam stands 25 feet tall and stretches 1,063 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 94 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1950, 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 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 07/11/2023.
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Location
| State | Wyoming |
| County | Campbell |
| Nearest City | Unnamed Ranch |
| River/Stream | Prairie Dog Creek |
| Coordinates | 44.37833, -105.80417 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 1,063 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 94 acre-ft |
| Max Storage | 94 acre-ft |
| Normal Storage | 43 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 4 sq mi |
| Max Discharge | 5,480 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Floyd Land & Livestock |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 07/11/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY02478 |
| Federal ID | WY02478 |
| More Info | State Dam Safety Program |