Twelve Mile Creek Watershed Site 71
Key Takeaway
Twelve Mile Creek Watershed Site 71 is classified as low hazard in Iowa. It was completed in 1993 and is 33 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 23 ft (taller than 13.3% in IA) |
| Dam Length | 642 ft |
| Dam Type | Earth |
| Max Storage | 71 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1993 (33 years old) |
| NID ID | IA02873 |
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
Dory Dam
Union, IA
Low Hazard 22 ftThree Mile Creek Watershed Site 49
Union, IA
Low Hazard 37 ftKuhl Dam
Union, IA
Low Hazard 31 ftTwelve Mile Creek Watershed Site 68-1
Union, IA
Low Hazard 28 ftTwelve Mile Creek Watershed Site 67
Union, IA
Low Hazard 28 ftIowa Noname75
Union, IA
Low Hazard 36 ftTwelve Mile Creek Watershed Site 72-2
Union, IA
Low Hazard 23 ftThree Mile Creek Watershed Site U-3
Union, IA
Low Hazard 23 ftFrequently Asked Questions
What is the hazard classification of Twelve Mile Creek Watershed Site 71?
Twelve Mile Creek Watershed Site 71 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 71?
Twelve Mile Creek Watershed Site 71 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 71 built?
Twelve Mile Creek Watershed Site 71 was completed in 1993, making it 33 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 71?
Twelve Mile Creek Watershed Site 71 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 71?
Twelve Mile Creek Watershed Site 71 has a dam height of 23 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.