Mirage Flats Dam 3 is an earth dam located in Sheridan County, Nebraska, built in 1958. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 32 ft32 ft tall and 540 ft long, taller than 74% 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 Mirage Flats Dam 3
Mirage Flats Dam 3 is a dam in Sheridan, Nebraska. The dam is owned by Wayne a & Rita M Peters (private). It impounds the Sturgeon Drain.
The dam stands 32 feet tall and stretches 540 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 55 acre-feet, and collects water from a drainage area of 7 square miles. Completed in 1958, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 03/25/2021.
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Location
| State | Nebraska |
| County | Sheridan |
| Nearest City | None |
| River/Stream | Sturgeon Drain |
| Coordinates | 42.51377, -102.56970 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 30 ft |
| Dam Length | 540 ft |
| Year Completed | 1958 (68 years old) |
Storage & Hydraulics
| NID Storage | 55 acre-ft |
| Max Storage | 55 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 7 sq mi |
| Max Discharge | 1,088 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Wayne a & Rita M Peters |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/25/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00792 |
| Federal ID | NE00792 |
| More Info | State Dam Safety Program |