Twelve Mile Creek Watershed Site 77
Key Takeaway
Twelve Mile Creek Watershed Site 77 is classified as low hazard in Iowa. It was completed in 1979 and is 47 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 22 ft (taller than 10.6% in IA) |
| Dam Length | 650 ft |
| Dam Type | Earth |
| Max Storage | 65 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1979 (47 years old) |
| NID ID | IA01996 |
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
Union County SWCD
Local Government
Nearby Dams
Hawk Lake Dam
Union, IA
Low Hazard 18 ftClaiser Dam
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Low Hazard 29 ftThree Mile Creek Watershed Site 58
Union, IA
Low Hazard 32 ftDowning Dam
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Low Hazard 25 ftTwelve Mile Creek Watershed Site 73
Union, IA
Low Hazard 30 ftThree Mile Creek Watershed Site 65
Adair, IA
Low Hazard 30 ftThree Mile Creek Watershed Site 63
Adair, IA
Low Hazard 33 ftTwelve Mile Creek Watershed Site 72-1
Union, IA
Low Hazard 27 ftFrequently Asked Questions
What is the hazard classification of Twelve Mile Creek Watershed Site 77?
Twelve Mile Creek Watershed Site 77 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 Twelve Mile Creek Watershed Site 77?
Twelve Mile Creek Watershed Site 77 is owned by Union County SWCD (Local Government). The owner is responsible for maintenance, inspections, and compliance with dam safety regulations.
When was Twelve Mile Creek Watershed Site 77 built?
Twelve Mile Creek Watershed Site 77 was completed in 1979, making it 47 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 Twelve Mile Creek Watershed Site 77?
Twelve Mile Creek Watershed Site 77 serves the following purposes: Fire Protection, Stock, Or Small Fish Pond, Flood Risk Reduction. Many dams in the U.S. are multi-purpose, supporting flood control, water supply, recreation, and other uses.
How tall is Twelve Mile Creek Watershed Site 77?
Twelve Mile Creek Watershed Site 77 has a dam height of 22 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.