Oak-middle 84-a is an earth dam located in Seward County, Nebraska, built in 1964. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 39 ft39 ft tall and 685 ft long, taller than 85% 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 84-a
The primary purpose of Oak-middle 84-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 Farmstead.
The dam stands 39 feet tall and stretches 685 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 436 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1964, the structure is well into its service life at over 50 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 05/06/2021.
At 39 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | Nebraska |
| County | Seward |
| Nearest City | Farmstead |
| River/Stream | Tr-middle Oak Creek |
| Coordinates | 41.03545, -96.99567 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 39 ft |
| Dam Height | 34 ft |
| Dam Length | 685 ft |
| Year Completed | 1964 (62 years old) |
Storage & Hydraulics
| NID Storage | 436 acre-ft |
| Max Storage | 436 acre-ft |
| Normal Storage | 96 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 2,066 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Lower Platte South Natural Resources District |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/06/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NE00076 |
| Federal ID | NE00076 |
| More Info | State Dam Safety Program |