Nelson Dam 431
Nelson Dam 431 is an earth dam located in Kearney County, Nebraska, built in 1973. It carries a Low hazard potential classification and has a poor condition assessment.
About Nelson Dam 431
The primary purpose of Nelson Dam 431 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Dlb Farms Llc (private). It impounds the Tr-little Blue River near Ayr.
The dam stands 21 feet tall and stretches 600 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 192 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1973, 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 09/21/2023.
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Location
| State | Nebraska |
| County | Kearney |
| Nearest City | Ayr |
| River/Stream | Tr-little Blue River |
| Coordinates | 40.36818, -98.84782 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 19 ft |
| Dam Length | 600 ft |
| Year Completed | 1973 (53 years old) |
Storage & Hydraulics
| NID Storage | 192 acre-ft |
| Max Storage | 192 acre-ft |
| Normal Storage | 62 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 503 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | DLB Farms LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 09/21/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00431 |
| Federal ID | NE00431 |
| More Info | State Dam Safety Program |