Three Mile Creek Watershed Site 50-2 is an earth dam located in Union County, Iowa, built in 1980. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 480 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 Three Mile Creek Watershed Site 50-2
The primary purpose of Three Mile Creek Watershed Site 50-2 is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Union County Swcd (local government). It impounds the Tr-three Mile Creek near Talmage.
The dam stands 31 feet tall and stretches 480 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 216 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 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. The most recent inspection on record was 10/25/2001. That was over 24 years ago.
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Location
| State | Iowa |
| County | Union |
| Nearest City | Talmage |
| River/Stream | Tr-three Mile Creek |
| Coordinates | 41.14790, -94.27050 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 480 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 216 acre-ft |
| Max Storage | 216 acre-ft |
| Normal Storage | 47 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 0 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Union County Swcd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 10/25/2001 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA02106 |
| Federal ID | IA02106 |
| More Info | State Dam Safety Program |