Coon Creek 29

Coon Creek 29 is an earth dam located in Monroe County, Wisconsin, built in 1961. It carries a Low hazard potential classification and has a unsatisfactory condition assessment.

About Coon Creek 29

The primary purpose of Coon Creek 29 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 Monroe County (local government). It impounds the Coon Creek.

The dam stands 34 feet tall and stretches 440 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 207 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1961, 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. Its condition is rated unsatisfactory, indicating serious safety deficiencies exist that require immediate attention or remedial action. An emergency action plan is in place for this dam. The most recent inspection on record was 04/26/2012. That was over 13 years ago.

At 34 feet, this dam is taller than 80% of dams nationwide.

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Low HazardUnsatisfactory ConditionEmergency Action Plan: Yes

Location

StateWisconsin
CountyMonroe
Nearest CityNone
River/StreamCoon Creek
Coordinates43.76744, -90.89755

Physical Characteristics

Dam TypeEarth
NID Height34 ft
Dam Height34 ft
Dam Length440 ft
Year Completed1961 (65 years old)

Storage & Hydraulics

NID Storage207 acre-ft
Max Storage207 acre-ft
Normal Storage10 acre-ft
Surface Area5 acres
Drainage Area3 sq mi
Max Discharge195 cfs
Spillway TypeUncontrolled

Ownership & Safety

PurposeDebris Control
OwnerMonroe County
Owner TypeLocal Government
Hazard ClassificationLow
Condition AssessmentUnsatisfactory
Last Inspection04/26/2012
Emergency Action PlanYes

Identifiers

NID IDWI00368
Federal IDWI00368
More InfoState Dam Safety Program

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