Curtis Lockhart Reservoir Report

Last Updated: December 6, 2025

Curtis Lockhart is a private earth dam located in Custer, Oklahoma, designed by USDA NRCS and completed in 1974.


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Summary

With a dam height of 28 feet and a length of 206 feet, it has a storage capacity of 77 acre-feet and serves the purpose of water resource management in the region. The dam has a low hazard potential and a moderate risk assessment level, making it a crucial infrastructure for mitigating potential flooding and safeguarding the surrounding area.

Managed by the Natural Resources Conservation Service, Curtis Lockhart plays a vital role in water conservation and flood control efforts in the region. Despite not being state regulated or permitted, the dam has a spillway width of 33 feet and a maximum discharge capacity of 571 cfs, ensuring effective water flow management during times of heavy rainfall. With its strategic location in the SE1/4 S09 T13 R17, Curtis Lockhart remains an essential resource for maintaining water quality and quantity in Custer County.

As a key structure in the Tulsa District, Curtis Lockhart represents a significant investment in water infrastructure by the federal government. While its condition assessment is currently not rated, the dam continues to operate effectively in meeting the water management needs of the local community. With its impressive capacity and design, Curtis Lockhart stands as a testament to the importance of sustainable water resource management in the face of changing climate patterns and increasing water demands.

Year Completed

1974

Dam Length

206

Dam Height

28

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

28

Drainage Area

0.33

Nid Storage

77

Hazard Potential

Low

Nid Height

28
       
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.