Bernard Norman Dam 1 is an earth dam located in Sioux County, Nebraska, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 15 ft15 ft tall and 558 ft long. 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 Bernard Norman Dam 1
The primary purpose of Bernard Norman Dam 1 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Jean Norman (private). It impounds the Tr-dirty Creek near Interior Sd.
The dam stands 15 feet tall and stretches 558 feet across, creates a reservoir covering 33 acres, has a maximum storage capacity of 226 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 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. The most recent inspection on record was 06/05/2019.
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Location
| State | Nebraska |
| County | Sioux |
| Nearest City | Interior Sd |
| River/Stream | Tr-dirty Creek |
| Coordinates | 42.83807, -103.53578 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 558 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 226 acre-ft |
| Max Storage | 226 acre-ft |
| Normal Storage | 140 acre-ft |
| Surface Area | 33 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 3,370 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Jean Norman |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/05/2019 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02514 |
| Federal ID | NE02514 |
| More Info | State Dam Safety Program |