Rock Creek 11-a
Rock Creek 11-a is an earth dam located in Pawnee County, Nebraska, built in 1969. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Rock Creek 11-a
The primary purpose of Rock Creek 11-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 Tr-rock Creek near Steinauer.
The dam stands 36 feet tall and stretches 770 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 401 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1969, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/06/2021.
At 36 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Nebraska |
| County | Pawnee |
| Nearest City | Steinauer |
| River/Stream | Tr-rock Creek |
| Coordinates | 40.20326, -96.28317 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 36 ft |
| Dam Height | 34 ft |
| Dam Length | 770 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 401 acre-ft |
| Max Storage | 401 acre-ft |
| Normal Storage | 59 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,016 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/06/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00778 |
| Federal ID | NE00778 |
| More Info | State Dam Safety Program |