Colorado Colony Ditch Co. No. 2 is an earth dam located in Sheridan County, Wyoming, built in 1957. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 16 ft16 ft tall and 165 ft long. 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 Colorado Colony Ditch Co. No. 2
The primary purpose of Colorado Colony Ditch Co. No. 2 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Colorado Colony Ditch Company (private). It impounds the Peralto Ditch near Big Horn.
The dam stands 16 feet tall and stretches 165 feet across, creates a reservoir covering 27 acres, and has a maximum storage capacity of 254 acre-feet. Completed in 1957, 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 08/13/2024.
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Location
| State | Wyoming |
| County | Sheridan |
| Nearest City | Big Horn |
| River/Stream | Peralto Ditch |
| Coordinates | 44.56800, -107.20100 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 165 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 254 acre-ft |
| Max Storage | 254 acre-ft |
| Normal Storage | 146 acre-ft |
| Surface Area | 27 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Colorado Colony Ditch Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/13/2024 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01350 |
| Federal ID | WY01350 |
| More Info | State Dam Safety Program |