Ogallala 7 (East Dam)
Key Takeaway
Ogallala 7 (East Dam) is classified as high hazard in Nebraska. It was completed in 1989 and is 37 years old. Its primary use is flood risk reduction. High hazard means loss of life is likely if the dam fails — it does not indicate the dam's current condition. Learn more.
Physical Details
| Dam Height | 38 ft (taller than 87.6% in NE) |
| Dam Length | 1,105 ft |
| Dam Type | Earth |
| Max Storage | 515 acre-ft |
| Normal Storage | 5 acre-ft |
| Surface Area | 2 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 3,927 cfs |
| Year Completed | 1989 (37 years old) |
| NID ID | NE02334 |
Safety Information
Loss of human life is likely if the dam fails.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
City of Ogallala
Local Government
Nearby Dams
Ogallala 6 (West Dam)
Keith, NE
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High Hazard 35 ftWestern Irrigation District Dam 1
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High Hazard 162 ftKeystone Diversion
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Low Hazard 20 ftRay Nelson Erosion Control Dam
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Low Hazard 16 ftHarms Dam 2000
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Significant Hazard 20 ftBrule Creek 1-A
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High Hazard 51 ftFrequently Asked Questions
What is the hazard classification of Ogallala 7 (East Dam)?
Ogallala 7 (East Dam) is classified as High Hazard. Loss of human life is likely if the dam fails. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Ogallala 7 (East Dam)?
Ogallala 7 (East Dam) is owned by City of Ogallala (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Ogallala 7 (East Dam) built?
Ogallala 7 (East Dam) was completed in 1989, making it 37 years old. Many U.S. dams were built between the 1930s and 1970s during a period of major infrastructure investment.
What is the primary purpose of Ogallala 7 (East Dam)?
Ogallala 7 (East Dam) serves the following purposes: Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Ogallala 7 (East Dam)?
Ogallala 7 (East Dam) has a dam height of 38 ft. Dam height is measured from the natural streambed at the downstream toe to the top of the dam, and may differ from the visible height.
When was Ogallala 7 (East Dam) last inspected?
Ogallala 7 (East Dam) was last inspected on May 18, 2023. Inspection dates indicate when a formal review occurred, not the results of that inspection.