Blanke Dam
Key Takeaway
Blanke Dam is classified as significant hazard in Nebraska. It was completed in 1956 and is 70 years old. Its primary use is flood risk reduction. Significant hazard means failure could cause economic or environmental damage. Learn more.
Physical Details
| Dam Height | 21 ft (taller than 32.5% in NE) |
| Dam Length | 318 ft |
| Dam Type | Earth |
| Max Storage | 204 acre-ft |
| Normal Storage | 129 acre-ft |
| Surface Area | 21 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 2,120 cfs |
| Year Completed | 1956 (70 years old) |
| NID ID | NE01141 |
Safety Information
No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Robert Blanke
Private
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Low Hazard 13 ftFrequently Asked Questions
What is the hazard classification of Blanke Dam?
Blanke Dam is classified as Significant Hazard. No probable loss of human life, but can cause economic loss, environmental damage, or disruption of lifeline facilities. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Blanke Dam?
Blanke Dam is owned by Robert Blanke (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Blanke Dam built?
Blanke Dam was completed in 1956, making it 70 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 Blanke Dam?
Blanke 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 Blanke Dam?
Blanke Dam has a dam height of 21 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 Blanke Dam last inspected?
Blanke Dam was last inspected on April 20, 2022. Inspection dates indicate when a formal review occurred, not the results of that inspection.