Oak-middle 81-a
Oak-middle 81-a is an earth dam located in Seward County, Nebraska, built in 1959. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Oak-middle 81-a
The primary purpose of Oak-middle 81-a 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 Lower Platte South Natural Resources District (local government). It impounds the Tr-middle Oak Creek near Raymond.
The dam stands 52 feet tall and stretches 1,326 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 551 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1959, 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 04/22/2020.
At 52 feet, this dam is taller than 93% of dams nationwide.
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Location
| State | Nebraska |
| County | Seward |
| Nearest City | Raymond |
| River/Stream | Tr-middle Oak Creek |
| Coordinates | 40.98951, -96.97954 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 52 ft |
| Dam Height | 50 ft |
| Dam Length | 1,326 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 551 acre-ft |
| Max Storage | 551 acre-ft |
| Normal Storage | 133 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 618 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lower Platte South Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/22/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00066 |
| Federal ID | NE00066 |
| More Info | State Dam Safety Program |