Ogallala 7 (east Dam)
Ogallala 7 (east Dam) is an earth dam located in Keith County, Nebraska, built in 1989. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Ogallala 7 (east Dam)
The primary purpose of Ogallala 7 (east 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 City Of Ogallala (local government). It impounds the Tr-south Platte River near Ogallala.
The dam stands 51 feet tall and stretches 1,105 feet across, creates a reservoir covering 2 acres, has a maximum storage capacity of 515 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1989, the structure is 37 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/17/2024.
At 51 feet, this dam is taller than 93% of dams nationwide.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Nebraska dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Nebraska |
| County | Keith |
| Nearest City | Ogallala |
| River/Stream | Tr-south Platte River |
| Coordinates | 41.13504, -101.72388 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 51 ft |
| Dam Height | 38 ft |
| Dam Length | 1,105 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 515 acre-ft |
| Max Storage | 515 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,927 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Ogallala |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/17/2024 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | NE02334 |
| Federal ID | NE02334 |
| More Info | State Dam Safety Program |