Janssen Dam
Key Takeaway
Janssen Dam is classified as low hazard in Nebraska. It was completed in 1977 and is 49 years old. Its primary use is irrigation.
Physical Details
| Dam Height | 24 ft (taller than 42.8% in NE) |
| Dam Length | 1,100 ft |
| Dam Type | Earth |
| Max Storage | 165 acre-ft |
| Normal Storage | 64 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 340 cfs |
| Year Completed | 1977 (49 years old) |
| NID ID | NE01566 |
Safety Information
No probable loss of human life and low economic/environmental losses expected.
Hazard potential describes downstream consequences of failure, not the dam's current condition. What does this mean?
Ownership
Dale Janssen
Private
Nearby Dams
Ziegler Creek Z-6-2
Otoe, NE
Low Hazard 24 ftZiegler Creek Z-5-1
Otoe, NE
Low Hazard 29 ftZiegler Creek Z-5-3
Otoe, NE
Low Hazard 33 ftBrownell Creek 4-1
Otoe, NE
Low Hazard 27 ftBrownell Creek 13-6
Otoe, NE
Low Hazard 33 ftBrownell Creek 13-4
Otoe, NE
Low Hazard 34 ftBrownell Creek 10-2
Otoe, NE
Low Hazard 31 ftZiegler Creek Z-5-4
Otoe, NE
Low Hazard 29 ftFrequently Asked Questions
What is the hazard classification of Janssen Dam?
Janssen Dam is classified as Low Hazard. No probable loss of human life and low economic/environmental losses expected. This classification refers to the potential downstream consequences of a failure, not the dam's current structural condition.
Who owns and operates Janssen Dam?
Janssen Dam is owned by Dale Janssen (Private). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Janssen Dam built?
Janssen Dam was completed in 1977, making it 49 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 Janssen Dam?
Janssen Dam serves the following purposes: Irrigation. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Janssen Dam?
Janssen Dam has a dam height of 24 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 Janssen Dam last inspected?
Janssen Dam was last inspected on June 15, 2021. Inspection dates indicate when a formal review occurred, not the results of that inspection.