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.
Location
| State | Wisconsin |
| County | Columbia |
| Nearest City | Columbus |
| River/Stream | Crawfish |
| Coordinates | 43.33725, -89.01047 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 14 ft |
| Dam Height | 14 ft |
| Dam Length | 350 ft |
| Year Completed | 1917 (109 years old) |
Storage & Hydraulics
| NID Storage | 185 acre-ft |
| Max Storage | 185 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 164 sq mi |
| Max Discharge | 4,250 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Recreation |
| Owner | City of Columbus |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/28/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00114 |
| Federal ID | WI00114 |
| More Info | State Dam Safety Program |