Mononame 812 Reservoir Report

Last Updated: January 11, 2026

Mononame 812, located in Iron County, Missouri, is a privately-owned earth dam completed in 1971 with a primary purpose of recreation.


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Summary

With a height of 25 feet and a storage capacity of 54 acre-feet, this dam serves as a water supply and recreational area for the local community. Although it is not regulated by the state and has a low hazard potential, Mononame 812 plays a crucial role in providing water resources and recreational opportunities in the area.

Situated on the TR Courtois Creek offstream, Mononame 812 offers a surface area of 4 acres and a drainage area of 43 square miles. Despite not having a designated spillway type, this dam has a structural height of 25 feet and a normal storage capacity of 13 acre-feet. While it has not been rated for its condition assessment, Mononame 812 continues to be a valuable asset for water supply and outdoor activities in the region.

Owned by a private entity, Mononame 812 stands as a testament to the importance of water resource management and climate resilience. As a key player in the recreational landscape of Iron County, this earth dam provides not only water storage but also opportunities for fishing, boating, and other leisure activities. With a focus on maintaining its low hazard potential and maximizing its storage capacity, Mononame 812 remains a vital component in the local water infrastructure and environmental conservation efforts.

Year Completed

1971

Dam Height

25

River Or Stream

TR COURTOIS CREEK OFFSTREAM

Primary Dam Type

Earth

Surface Area

4

Drainage Area

43

Nid Storage

54

Structural Height

25

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

25
       
Seasonal Comparison

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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.