Vonasek Dam 498
Vonasek Dam 498 is an earth dam located in Knox County, Nebraska, built in 1953. It carries a Low hazard potential classification and has a poor condition assessment.
About Vonasek Dam 498
The primary purpose of Vonasek Dam 498 is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Daryll B & Tamara L Lightner (private). It impounds the Soldier Creek near Niobrara.
The dam stands 28 feet tall and stretches 310 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 131 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1953, 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 05/26/2021.
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Location
| State | Nebraska |
| County | Knox |
| Nearest City | Niobrara |
| River/Stream | Soldier Creek |
| Coordinates | 42.67234, -98.20820 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 28 ft |
| Dam Length | 310 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 131 acre-ft |
| Max Storage | 131 acre-ft |
| Normal Storage | 52 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 1,400 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Daryll B & Tamara L Lightner |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 05/26/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00498 |
| Federal ID | NE00498 |
| More Info | State Dam Safety Program |