Deer Hollow Lake Dam Reservoir Report

Last Updated: December 14, 2025

Deer Hollow Lake Dam, located in Jonesburg, Missouri, is a privately owned structure built in 1972 for recreational purposes.


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Summary

The dam stands at a height of 78 feet and stretches 500 feet in length, creating a reservoir with a storage capacity of 167 acre-feet. The dam is regulated by the DAM AND RESERVOIR SAFETY PROG in Missouri, ensuring its safety and compliance with state regulations.

Despite its satisfactory condition assessment in 2007, Deer Hollow Lake Dam has a high hazard potential, indicating the potential risk associated with the structure. The dam's spillway, which is uncontrolled and 70 feet wide, can discharge a maximum of 698 cubic feet per second. The dam's location on an unnamed tributary to Wilson's Creek adds to its importance in the local water resource infrastructure.

With a moderate risk assessment rating and regular inspections every two years, Deer Hollow Lake Dam remains a key feature in the water resource management of Warren County, Missouri. The dam's primary purpose for recreation highlights its value in providing leisure opportunities while also serving as a critical component in the region's water storage and flood control efforts.

Year Completed

1972

Dam Length

500

Dam Height

78

River Or Stream

UNNAMED TRIB TO WILSON'S CRK.

Primary Dam Type

Earth

Surface Area

10.5

Drainage Area

26

Nid Storage

167

Structural Height

78

Outlet Gates

None

Hazard Potential

High

Foundations

Unlisted/Unknown

Nid Height

78
       
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.