Big Coon Subwatershed Site M-5
Big Coon Subwatershed Site M-5 is an earth dam located in Woodbury County, Iowa, built in 2000. It carries a Low hazard potential classification.
About Big Coon Subwatershed Site M-5
The primary purpose of Big Coon Subwatershed Site M-5 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 Woodbury County Swcd (local government). It impounds the Coon Creek near Anthon.
The dam stands 20 feet tall and stretches 565 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 52 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 2000, the structure is 26 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 | Woodbury |
| Nearest City | Anthon |
| River/Stream | Coon Creek |
| Coordinates | 42.41380, -95.68530 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 565 ft |
| Year Completed | 2000 (26 years old) |
Storage & Hydraulics
| NID Storage | 52 acre-ft |
| Max Storage | 52 acre-ft |
| Normal Storage | 3 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Woodbury County SWCD |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03434 |
| Federal ID | IA03434 |
| More Info | State Dam Safety Program |