Clearwater Lake Near Piedmont Reservoir Report

Last Updated: December 5, 2025

Clearwater Lake is a reservoir located near Piedmont, Missouri, with a surface area of 1,630 acres.


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Summary

The lake was constructed in the 1940s by the U.S. Army Corps of Engineers for the purpose of flood control, hydroelectric power generation, and recreation. The hydrology of the lake is primarily fed by the Black River, St. Francis River, and numerous smaller creeks. The lake's water level is closely monitored and controlled by the Army Corps of Engineers. Clearwater Lake provides water for several agricultural uses, including irrigation, and also serves as a popular recreation spot for fishing, boating, and camping. Additionally, the lake's snowpack providers offer ample opportunities for winter sports and activities. Overall, Clearwater Lake serves as an important resource for flood control, hydroelectric power, agriculture, and recreational activities in the Piedmont, MO area.

Reservoir Details

Lake Or Reservoir Water Surface Elevation Above Navd 1988, Ft 24hr Change 0.01%
Percent of Normal 100%
Minimum 494.01 ft
2016-04-19
Maximum 570.76 ft
2017-05-06
Average 497 ft
Dam_Height 154
Hydraulic_Height 109
Drainage_Area 898
Year_Completed 1942
Nid_Storage 413000
Structural_Height 155
River_Or_Stream BLACK
Foundations Soil
Surface_Area 1630
Hazard_Potential High
Dam_Length 4225
Primary_Dam_Type Earth
Nid_Height 155
       
Seasonal Comparison
Precipitation, Total, In Levels
Lake Or Reservoir Water Surface Elevation Above Navd 1988, Ft Levels

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.