Upper Big Nemaha G-25
Upper Big Nemaha G-25 is an earth dam located in Gage County, Nebraska, built in 1968. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Upper Big Nemaha G-25
Upper Big Nemaha G-25 is a dam in Gage, Nebraska. The dam is owned by Nemaha Natural Resources District (local government). It impounds the Tr-mid Br Big Nemaha River near Adams.
The dam stands 29 feet tall and stretches 665 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 178 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1968, 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 satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 06/01/2020.
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Location
| State | Nebraska |
| County | Gage |
| Nearest City | Adams |
| River/Stream | Tr-mid Br Big Nemaha River |
| Coordinates | 40.49530, -96.53370 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 25 ft |
| Dam Length | 665 ft |
| Year Completed | 1968 (58 years old) |
Storage & Hydraulics
| NID Storage | 178 acre-ft |
| Max Storage | 178 acre-ft |
| Normal Storage | 72 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 340 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Nemaha Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/01/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00983 |
| Federal ID | NE00983 |
| More Info | State Dam Safety Program |