Big Coon Subwatershed Site 6h-2 is an earth dam located in Woodbury County, Iowa, built in 1999. It carries a Low hazard potential classification.
Dam profile
NID height · 33 ft33 ft tall and 430 ft long, taller than 76% 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 Big Coon Subwatershed Site 6h-2
The primary purpose of Big Coon Subwatershed Site 6h-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 Woodbury County Swcd (local government). It impounds the Tr- Big Creek near Anthon.
The dam stands 33 feet tall and stretches 430 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 78 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1999, the structure is 27 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.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | Iowa |
| County | Woodbury |
| Nearest City | Anthon |
| River/Stream | Tr- Big Creek |
| Coordinates | 42.35940, -95.75240 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 430 ft |
| Year Completed | 1999 (27 years old) |
Storage & Hydraulics
| NID Storage | 78 acre-ft |
| Max Storage | 78 acre-ft |
| Normal Storage | 29 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 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 assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | IA03433 |
| Federal ID | IA03433 |
| More Info | State Dam Safety Program |