Oak-middle 86-a is an earth dam located in Seward County, Nebraska, built in 1963. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 37 ft37 ft tall and 730 ft long, taller than 83% 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 Oak-middle 86-a
The primary purpose of Oak-middle 86-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 37 feet tall and stretches 730 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 384 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1963, 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 06/28/2021.
At 37 feet, this dam is taller than 83% of dams nationwide.
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Location
| State | Nebraska |
| County | Seward |
| Nearest City | Raymond |
| River/Stream | Tr-middle Oak Creek |
| Coordinates | 41.03232, -97.01021 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 37 ft |
| Dam Height | 32 ft |
| Dam Length | 730 ft |
| Year Completed | 1963 (63 years old) |
Storage & Hydraulics
| NID Storage | 384 acre-ft |
| Max Storage | 384 acre-ft |
| Normal Storage | 87 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 552 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 | 06/28/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00075 |
| Federal ID | NE00075 |
| More Info | State Dam Safety Program |