Udeys

Udeys is a gravity dam located in Columbia County, Wisconsin, built in 1917. It carries a High hazard potential classification and has a satisfactory condition assessment.

About Udeys

The primary purpose of Udeys is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by City Of Columbus (local government). It impounds the Crawfish near Columbus.

The dam stands 14 feet tall and stretches 350 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 185 acre-feet, and collects water from a drainage area of 164 square miles. Completed in 1917, the structure is over a century old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 09/28/2021.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Wisconsin dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

High HazardSatisfactory ConditionEmergency Action Plan: Yes

Location

StateWisconsin
CountyColumbia
Nearest CityColumbus
River/StreamCrawfish
Coordinates43.33725, -89.01047

Physical Characteristics

Dam TypeGravity
NID Height14 ft
Dam Height14 ft
Dam Length350 ft
Year Completed1917 (109 years old)

Storage & Hydraulics

NID Storage185 acre-ft
Max Storage185 acre-ft
Normal Storage90 acre-ft
Surface Area26 acres
Drainage Area164 sq mi
Max Discharge4,250 cfs
Spillway TypeControlled

Ownership & Safety

PurposeRecreation
OwnerCity of Columbus
Owner TypeLocal Government
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection09/28/2021
Emergency Action PlanYes

Identifiers

NID IDWI00114
Federal IDWI00114
More InfoState Dam Safety Program

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