Twelve Mile Creek Watershed Site 77
Twelve Mile Creek Watershed Site 77 is an earth dam located in Union County, Iowa, built in 1979. It carries a Low hazard potential classification.
About Twelve Mile Creek Watershed Site 77
The primary purpose of Twelve Mile Creek Watershed Site 77 is fire protection, stock, or small fish pond. The dam maintains a small impoundment used for fire suppression, livestock watering, or as a fish pond. The dam is owned by Union County Swcd (local government). It impounds the Tr-twelve Mile Creek near Afton.
The dam stands 22 feet tall and stretches 650 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 65 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1979, the structure is 47 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life.
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Location
| State | Iowa |
| County | Union |
| Nearest City | Afton |
| River/Stream | Tr-twelve Mile Creek |
| Coordinates | 41.13130, -94.33790 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 22 ft |
| Dam Height | 22 ft |
| Dam Length | 650 ft |
| Year Completed | 1979 (47 years old) |
Storage & Hydraulics
| NID Storage | 65 acre-ft |
| Max Storage | 65 acre-ft |
| Normal Storage | 20 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Fire Protection, Stock, Or Small Fish Pond |
| Owner | Union County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA01996 |
| Federal ID | IA01996 |
| More Info | State Dam Safety Program |