Bernard Norman Dam 2
Bernard Norman Dam 2 is an earth dam located in Sioux County, Nebraska, built in 1970. It carries a Significant hazard potential classification and has a poor condition assessment.
About Bernard Norman Dam 2
The primary purpose of Bernard Norman Dam 2 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 Jean Norman (private). It impounds the Tr-dirty Creek near Interior Sd.
The dam stands 20 feet tall and stretches 485 feet across, creates a reservoir covering 59 acres, has a maximum storage capacity of 575 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1970, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/08/2023.
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Location
| State | Nebraska |
| County | Sioux |
| Nearest City | Interior Sd |
| River/Stream | Tr-dirty Creek |
| Coordinates | 42.83327, -103.53078 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 485 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 575 acre-ft |
| Max Storage | 575 acre-ft |
| Normal Storage | 373 acre-ft |
| Surface Area | 59 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 3,344 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Jean Norman |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Poor |
| Last Inspection | 06/08/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02515 |
| Federal ID | NE02515 |
| More Info | State Dam Safety Program |