Barnhart William A Reservoir Report

Last Updated: January 11, 2026

Barnhart William A is a privately owned dam located in McCurtain, Oklahoma, with a primary purpose classified as 'Other'.


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Summary

Constructed in 1965, this Earth dam stands at 18 feet in height and spans 440 feet in length, with a storage capacity of 50 acre-feet. The dam's hydraulic height is recorded at 16 feet, and it features a controlled spillway with a width of 1 foot, allowing for a maximum discharge of 1500 cubic feet per second.

Despite being rated with a low hazard potential, Barnhart William A is considered to have a very high risk assessment, indicating the need for vigilant monitoring and risk management measures. The dam is under the regulatory jurisdiction of the Oklahoma Water Resources Board, which oversees its permitting, inspection, and enforcement. The last recorded inspection of the dam took place in May 2010, with an inspection frequency of every 5 years.

With its location on the TR-SAND SPRINGS BR river/stream and proximity to the city of FELKER, Barnhart William A serves as a critical infrastructure for water resource management in the region. Climate enthusiasts and water resource professionals alike will find interest in the data surrounding this dam, highlighting its structural dimensions, operational features, and regulatory oversight.

Year Completed

1965

Dam Length

440

Dam Height

18

River Or Stream

TR-SAND SPRINGS BR

Primary Dam Type

Earth

Hydraulic Height

16

Nid Storage

50

Structural Height

18

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

18
       
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.