Lake Murray Reservoir Report

Last Updated: December 5, 2025

Lake Murray in Oklahoma is a picturesque reservoir managed by the local government for recreational purposes.


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Summary

Nestled in Tillman County near the city of Cookietown, this stunning body of water covers 13 acres and boasts a maximum storage capacity of 156 acre-feet. The dam, made of stone and soil, stands at a height of 13.7 feet and has a spillway width of 1 foot. Despite its low hazard potential and moderate risk assessment, the dam's condition remains unrated, with inspection frequency set at every 5 years.

This reservoir, located along the Deep Red Run Coffin, is regulated and permitted by the Oklahoma Water Resources Board, ensuring state jurisdiction and enforcement over its operations. Managed by the USDA-NRCS, Lake Murray offers a tranquil escape for water resource and climate enthusiasts seeking to enjoy its serene waters and lush surroundings. With its uncontrolled spillway and close proximity to Fort Worth District, Lake Murray stands as a testament to responsible water management in the heart of Oklahoma's natural landscape.

Dam Length

1200

Dam Height

13.7

River Or Stream

DEEP RED RUN COFFIN

Surface Area

13

Hydraulic Height

11.7

Drainage Area

0.45

Nid Storage

156

Structural Height

15.7

Hazard Potential

Low

Foundations

Soil

Nid Height

16
       
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.