Rock Creek 22-a is an earth dam located in Pawnee County, Nebraska, built in 1979. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 39 ft39 ft tall and 990 ft long, taller than 85% 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 Rock Creek 22-a
The primary purpose of Rock Creek 22-a is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Nemaha Natural Resources District (local government). It impounds the Rock Creek near Steinauer.
The dam stands 39 feet tall and stretches 990 feet across, creates a reservoir covering 25 acres, has a maximum storage capacity of 608 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1979, the structure is 47 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 08/08/2022.
At 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Nebraska |
| County | Pawnee |
| Nearest City | Steinauer |
| River/Stream | Rock Creek |
| Coordinates | 40.22091, -96.32423 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 34 ft |
| Dam Length | 990 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 608 acre-ft |
| Max Storage | 608 acre-ft |
| Normal Storage | 139 acre-ft |
| Surface Area | 25 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 356 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/08/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01687 |
| Federal ID | NE01687 |
| More Info | State Dam Safety Program |