Twelve Mile Creek Watershed Site 18
Key Takeaway
Twelve Mile Creek Watershed Site 18 is classified as low hazard in Iowa. It was completed in 1986 and is 40 years old. Its primary use is fire protection.
Physical Details
| Dam Height | 36 ft (taller than 74.2% in IA) |
| Dam Length | 510 ft |
| Dam Type | Earth |
| Max Storage | 190 acre-ft |
| Normal Storage | 63 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 0 cfs |
| Year Completed | 1986 (40 years old) |
| NID ID | IA02341 |
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
Twelve Mile Creek Watershed Site 23
Union, IA
Low Hazard 33 ftHoughton Dam
Union, IA
Low Hazard 25 ftTwelve Mile Creek Watershed Site 27
Union, IA
Low Hazard 31 ftMc Guire Dam
Union, IA
Low Hazard 29 ftBrown Dam
Union, IA
Low Hazard 28 ftEast Fork Grand River Watershed Site A-53
Union, IA
Low Hazard 23 ftEast Fork Grand River Watershed Site A-55
Union, IA
Low Hazard 22 ftEast Fork Grand River Watershed Site A-54
Union, IA
Low Hazard 26 ftFrequently Asked Questions
What is the hazard classification of Twelve Mile Creek Watershed Site 18?
Twelve Mile Creek Watershed Site 18 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 18?
Twelve Mile Creek Watershed Site 18 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 18 built?
Twelve Mile Creek Watershed Site 18 was completed in 1986, making it 40 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 18?
Twelve Mile Creek Watershed Site 18 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 18?
Twelve Mile Creek Watershed Site 18 has a dam height of 36 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.