Nielsen South Dam is an earth dam located in Knox County, Nebraska, built in 1990. It carries a Low hazard potential classification and has a poor condition assessment.
Dam profile
NID height · 22 ft22 ft tall and 320 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 Nielsen South Dam
The primary purpose of Nielsen South Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Larry D & Wf Nielsen (private). It impounds the Tr-soldier Creek.
The dam stands 22 feet tall and stretches 320 feet across, creates a reservoir covering 10 acres, has a maximum storage capacity of 87 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1990, the structure is 36 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/25/2023.
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Location
| State | Nebraska |
| County | Knox |
| Nearest City | None |
| River/Stream | Tr-soldier Creek |
| Coordinates | 42.67016, -98.23447 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 320 ft |
| Year Completed | 1990 (36 years old) |
Storage & Hydraulics
| NID Storage | 87 acre-ft |
| Max Storage | 87 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 10 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 42 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Larry D & Wf Nielsen |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/25/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE02696 |
| Federal ID | NE02696 |
| More Info | State Dam Safety Program |