Mt Horeb
Mt Horeb is an earth dam located in Dane County, Wisconsin, built in 1940. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Mt Horeb
The primary purpose of Mt Horeb is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Dane County (local government). It impounds the Moen Creek.
The dam stands 34 feet tall and stretches 300 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 90 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
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 04/05/2022.
At 34 feet, this dam is taller than 80% of dams nationwide.
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 | Dane |
| Nearest City | None |
| River/Stream | Moen Creek |
| Coordinates | 43.02152, -89.74067 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 34 ft |
| Dam Height | 34 ft |
| Dam Length | 300 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 90 acre-ft |
| Max Storage | 90 acre-ft |
| Normal Storage | 30 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 2,295 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Dane County |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/05/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WI00006 |
| Federal ID | WI00006 |
| More Info | State Dam Safety Program |