Hargis Lake Dam Reservoir Report

Last Updated: December 5, 2025

Hargis Lake Dam, located in Tiff City, Missouri, was completed in 1977 for the primary purpose of recreation.


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Summary

This earth dam, with a structural height of 20 feet, serves as a low hazard potential structure with a normal storage capacity of 51 acre-feet. The dam is situated on the Harrison Branch off-stream and is owned privately.

Despite being unregulated by the state and not subject to regular inspections, Hargis Lake Dam provides vital water resource management and recreational opportunities for the local community. With a surface area of 9 acres and a drainage area of 10 acres, the dam offers a serene escape for water resource and climate enthusiasts. The dam's maximum storage capacity of 96 acre-feet ensures a reliable water supply for various recreational activities.

Overall, Hargis Lake Dam stands as a testament to the importance of responsible water resource management and the intersection of human and natural landscapes. While its condition assessment remains unrated and emergency preparedness measures are not specified, the dam continues to fulfill its purpose of providing recreational enjoyment and water storage capabilities in Newton County, Missouri.

Year Completed

1977

Dam Height

20

River Or Stream

HARRISON BRANCH OFF STREAM

Primary Dam Type

Earth

Surface Area

9

Drainage Area

10

Nid Storage

96

Structural Height

20

Hazard Potential

Low

Foundations

Unlisted/Unknown

Nid Height

20
       
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.