Tumbleson Dam is an earth dam located in Nuckolls County, Nebraska, built in 1939. It carries a Low hazard potential classification and has a fair condition assessment.
Dam profile
NID height · 30 ft30 ft tall and 502 ft long, taller than 68% of U.S. dams with a recorded height. 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 Tumbleson Dam
The primary purpose of Tumbleson Dam 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 Marian a & Roland a Hoelting Le (private). It impounds the Tr-elk Creek near Nelson.
The dam stands 30 feet tall and stretches 502 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 398 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. The most recent inspection on record was 03/26/2020.
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Location
| State | Nebraska |
| County | Nuckolls |
| Nearest City | Nelson |
| River/Stream | Tr-elk Creek |
| Coordinates | 40.21473, -98.20192 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 30 ft |
| Dam Height | 30 ft |
| Dam Length | 502 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 398 acre-ft |
| Max Storage | 398 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 1,330 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Marian a & Roland a Hoelting Le |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 03/26/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01378 |
| Federal ID | NE01378 |
| More Info | State Dam Safety Program |