Mt Horeb Reservoir Report

Last Updated: December 5, 2025

Mt Horeb, also known as Stewart Park, is a local government-owned recreational area located in Dane County, Wisconsin.


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Summary

The dam on Moen Creek, completed in 1940, serves the primary purpose of recreation and has a height of 33.5 feet. With a normal storage capacity of 30 acre-feet and a maximum discharge of 2295 cubic feet per second, this earth dam provides essential water resource management for the surrounding area.

Managed by the Wisconsin Department of Natural Resources, Mt Horeb dam is regulated, permitted, inspected, and enforced by state agencies to ensure its structural integrity and safe operation. The dam has a moderate risk assessment rating of 3, with a satisfactory condition assessment as of March 2019. Despite its high hazard potential, the dam has met regulatory guidelines and is equipped with an uncontrolled spillway to manage excess water flow during peak periods.

This picturesque location offers 7 acres of surface area and is a popular spot for outdoor activities in the region. With its rich history and commitment to safety and environmental stewardship, Mt Horeb dam stands as a vital water resource and recreational asset for Dane County, Wisconsin.

Year Completed

1940

Dam Length

300

Dam Height

33.5

River Or Stream

MOEN CREEK

Primary Dam Type

Earth

Surface Area

7

Hydraulic Height

23.8

Drainage Area

2

Nid Storage

90

Structural Height

33.5

Hazard Potential

High

Nid Height

34
       
Seasonal Comparison

Weather Forecast

Dam Data Reference

Condition Assessment

Satisfactory
No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High
Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.