Oak-middle 58-b is an earth dam located in Seward County, Nebraska, built in 1965. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 42 ft42 ft tall and 820 ft long, taller than 88% 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 58-b
The primary purpose of Oak-middle 58-b 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-oak Creek near Raymond.
The dam stands 42 feet tall and stretches 820 feet across, creates a reservoir covering 11 acres, has a maximum storage capacity of 350 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1965, 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 42 feet, this dam is taller than 88% of dams nationwide.
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Location
| State | Nebraska |
| County | Seward |
| Nearest City | Raymond |
| River/Stream | Tr-oak Creek |
| Coordinates | 41.02525, -96.94078 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 40 ft |
| Dam Length | 820 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 350 acre-ft |
| Max Storage | 350 acre-ft |
| Normal Storage | 71 acre-ft |
| Surface Area | 11 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 1,084 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 | NE00077 |
| Federal ID | NE00077 |
| More Info | State Dam Safety Program |