Lerwick Lake Dam Reservoir Report

Last Updated: December 5, 2025

Lerwick Lake Dam, located in Oakhill, Missouri, was completed in 1972 and serves multiple purposes including fire protection and as a stock or small fish pond.


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Summary

Owned privately, this earth dam stands at a height of 32 feet and has a storage capacity of 86 acre-feet, with a normal storage level of 23 acre-feet. The dam spans the TR-Brush Creek and covers a surface area of 5 acres within a drainage area of 300 acres.

With a low hazard potential and a condition assessment that is currently not rated, Lerwick Lake Dam provides essential water resource management for the surrounding area. Although not regulated by the state, the dam plays a crucial role in maintaining water levels for fire protection and agricultural activities. The dam's location within the Kansas City District underscores its importance in the local ecosystem and highlights the need for ongoing monitoring and maintenance to ensure its continued functionality.

For water resource and climate enthusiasts, Lerwick Lake Dam presents an intriguing case study of a privately owned earth dam with diverse utility. From its origins in the early 1970s to its current role in sustaining water levels for multiple purposes, this dam exemplifies the intersection of human intervention and natural resource management. As efforts continue to assess and monitor the dam's condition, its significance in the broader context of water resource management in Crawford County, Missouri, becomes increasingly evident.

Year Completed

1972

Dam Height

32

River Or Stream

TR-BRUSH CREEK

Primary Dam Type

Earth

Surface Area

5

Drainage Area

300

Nid Storage

86

Structural Height

32

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

32
       
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.