Hisle Lake Dam Reservoir Report

Last Updated: December 11, 2025

Hisle Lake Dam, located in Forest Green, Missouri, is a privately owned earth dam completed in 1960 for fire protection, stock, and small fish pond purposes.


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Summary

With a height of 20 feet and a storage capacity of 107 acre-feet, this dam serves as a recreational spot in addition to its primary functions. Situated on TR-North Fk Walnut Creek, the dam has a low hazard potential and is not rated for its condition assessment.

Despite its lack of state regulation, inspection, and enforcement, Hisle Lake Dam remains a vital water resource in Randolph County, Missouri. The dam covers a surface area of 10 acres and drains a watershed area of 69 square miles. Although no spillway type is specified, the dam's primary purpose is to provide essential water storage for fire protection and recreational activities in the area. With a focus on sustainability and efficient water management, Hisle Lake Dam continues to play a crucial role in the local ecosystem.

As an integral part of the Kansas City District, Hisle Lake Dam is overseen by the US Army Corps of Engineers and maintains a close connection to federal agencies for any necessary funding, design, construction, or operational support. With a focus on risk management and emergency preparedness, the dam's owners are constantly evaluating its safety measures and ensuring compliance with guidelines. Despite its unregulated state jurisdiction, Hisle Lake Dam stands as a testament to the importance of water resource management and climate resilience in the face of changing environmental conditions.

Year Completed

1960

Dam Height

20

River Or Stream

TR-NORTH FK WALNUT CREEK

Primary Dam Type

Earth

Surface Area

10

Drainage Area

69

Nid Storage

107

Structural Height

20

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

20
       
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.