Mund Lake Dam Reservoir Report

Last Updated: January 12, 2026

Mund Lake Dam, located in Columbia, Illinois, is a private earth dam used primarily for irrigation purposes.


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Summary

Managed by Precision Design & Survey, Inc., this dam stands at a height of 22.8 feet and has a storage capacity of 64.77 acre-feet. Situated on the TRIB HILL LAKE CREEK, Mund Lake Dam plays a crucial role in providing water resources for agricultural activities in the area.

Despite its significant hazard potential, with a moderate risk assessment rating, Mund Lake Dam has not had its condition assessed recently. The dam features an uncontrolled spillway with a width of 6 feet and no outlet gates. With a drainage area of 0.13 square miles, this dam serves as a vital structure for managing water resources in Monroe County, Illinois.

Water resource and climate enthusiasts monitoring Mund Lake Dam should pay close attention to its maintenance and inspection schedules, as its last inspection was conducted in 2015. As a key infrastructure for irrigation and recreation, ensuring the safety and stability of Mund Lake Dam is essential for sustainable water management in the region.

Dam Length

420

Dam Height

22.8

River Or Stream

TRIB HILL LAKE CREEK

Primary Dam Type

Earth

Surface Area

8.1

Drainage Area

0.13

Nid Storage

64.77

Outlet Gates

None

Hazard Potential

Significant

Foundations

Soil

Nid Height

23
       
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.