Dorman Dam
Dorman Dam is an earth dam located in Garden County, Nebraska, built in 1978. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Dorman Dam
The primary purpose of Dorman 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 North Platte Natural Resources District (local government). It impounds the Tr-lost Creek near Oshkosh.
The dam stands 24 feet tall and stretches 688 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 237 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1978, the structure is 48 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in 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 03/20/2023.
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Location
| State | Nebraska |
| County | Garden |
| Nearest City | Oshkosh |
| River/Stream | Tr-lost Creek |
| Coordinates | 41.45846, -102.33622 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 688 ft |
| Year Completed | 1978 (48 years old) |
Storage & Hydraulics
| NID Storage | 237 acre-ft |
| Max Storage | 237 acre-ft |
| Normal Storage | 32 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 590 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | North Platte Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/20/2023 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE01763 |
| Federal ID | NE01763 |
| More Info | State Dam Safety Program |