Colletti No. 2 is an earth dam located in Lincoln County, Wyoming, built in 1927. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 26 ft26 ft tall and 536 ft long, taller than 55% 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 Colletti No. 2
The primary purpose of Colletti 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 Joseph James & Louis Colletti (private). It impounds the Branch of Willow Creek near Kemmerer.
The dam stands 26 feet tall and stretches 536 feet across, creates a reservoir covering 6 acres, and has a maximum storage capacity of 76 acre-feet. Completed in 1927, 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 08/17/2023.
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Location
| State | Wyoming |
| County | Lincoln |
| Nearest City | Kemmerer |
| River/Stream | Branch of Willow Creek |
| Coordinates | 41.93500, -110.50600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 26 ft |
| Dam Height | 26 ft |
| Dam Length | 536 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 76 acre-ft |
| Max Storage | 76 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 6 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Joseph James & Louis Colletti |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 08/17/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01284 |
| Federal ID | WY01284 |
| More Info | State Dam Safety Program |