Twelve Mile Creek Watershed Site 36 is an earth dam located in Union County, Iowa, built in 2003. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 550 ft long, taller than 72% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Twelve Mile Creek Watershed Site 36
The primary purpose of Twelve Mile Creek Watershed Site 36 is grade stabilization. Grade stabilization dams prevent erosion by reducing the slope and velocity of water flowing through a channel. They're commonly used to stop gullies from deepening and to protect downstream land and infrastructure. The dam is owned by Union County Swcd (local government). It impounds the Tr- Twelve Mile Creek near Davis City.
The dam stands 31 feet tall and stretches 550 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 215 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 2003, the structure is relatively new.
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 | Davis City |
| River/Stream | Tr- Twelve Mile Creek |
| Coordinates | 40.97100, -94.15450 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 550 ft |
| Year Completed | 2003 (23 years old) |
Storage & Hydraulics
| NID Storage | 215 acre-ft |
| Max Storage | 215 acre-ft |
| Normal Storage | 50 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Grade Stabilization |
| Owner | Union County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03506 |
| Federal ID | IA03506 |
| More Info | State Dam Safety Program |