Coon Creek 35 is an earth dam located in La Crosse County, Wisconsin, built in 1962. It carries a Low hazard potential classification.
Dam profile
NID height · 31 ft31 ft tall and 575 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 Coon Creek 35
The primary purpose of Coon Creek 35 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by La Crosse County (local government). It impounds the Tr Coon Creek near Coon Valley.
The dam stands 31 feet tall and stretches 575 feet across, has a maximum storage capacity of 109 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1962, the structure is well into its service life at over 50 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. An emergency action plan is in place for this dam. The most recent inspection on record was 06/05/2012. That was over 14 years ago.
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Location
| State | Wisconsin |
| County | La Crosse |
| Nearest City | Coon Valley |
| River/Stream | Tr Coon Creek |
| Coordinates | 43.75762, -90.96919 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 575 ft |
| Year Completed | 1962 (64 years old) |
Storage & Hydraulics
| NID Storage | 109 acre-ft |
| Max Storage | 109 acre-ft |
| Drainage Area | 1 sq mi |
| Max Discharge | 130 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Debris Control |
| Owner | La Crosse County |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 06/05/2012 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00366 |
| Federal ID | WI00366 |
| More Info | State Dam Safety Program |