Upper Big Nemaha G-20
Upper Big Nemaha G-20 is an earth dam located in Gage County, Nebraska, built in 1978. It carries a Low hazard potential classification and has a fair condition assessment.
About Upper Big Nemaha G-20
Upper Big Nemaha G-20 is a dam in Gage, Nebraska. The dam is owned by Nemaha Natural Resources District (local government). It impounds the Tr-hooker Creek near Sterling.
The dam stands 28 feet tall and stretches 437 feet across, creates a reservoir covering 3 acres, has a maximum storage capacity of 43 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1978, the structure is 48 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 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 06/16/2020.
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Location
| State | Nebraska |
| County | Gage |
| Nearest City | Sterling |
| River/Stream | Tr-hooker Creek |
| Coordinates | 40.39371, -96.47353 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 28 ft |
| Dam Height | 27 ft |
| Dam Length | 437 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 43 acre-ft |
| Max Storage | 43 acre-ft |
| Normal Storage | 17 acre-ft |
| Surface Area | 3 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 623 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Fair |
| Last Inspection | 06/16/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01594 |
| Federal ID | NE01594 |
| More Info | State Dam Safety Program |