Wasatch - First Enlargement is an earth dam located in Sweetwater County, Wyoming, built in 1938. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 31 ft31 ft tall and 661 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 Wasatch - First Enlargement
The primary purpose of Wasatch - First Enlargement is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Robert L. & Dawn M. Slagowski (private). It impounds the Little Dry Creek.
The dam stands 31 feet tall and stretches 661 feet across, creates a reservoir covering 16 acres, and has a maximum storage capacity of 210 acre-feet. Completed in 1938, 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 06/29/2022.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Wyoming |
| County | Sweetwater |
| Nearest City | None |
| River/Stream | Little Dry Creek |
| Coordinates | 41.15560, -109.95670 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 661 ft |
| Year Completed | 1938 (88 years old) |
Storage & Hydraulics
| NID Storage | 210 acre-ft |
| Max Storage | 210 acre-ft |
| Normal Storage | 143 acre-ft |
| Surface Area | 16 acres |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Robert L. & Dawn M. Slagowski |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/29/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WY01268 |
| Federal ID | WY01268 |
| More Info | State Dam Safety Program |