Wahl Reservoir Report

Last Updated: December 5, 2025

Wahl, a private water resource in Major County, Oklahoma, stands as a crucial structure regulated by the Oklahoma Water Resources Board.


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Summary

Completed in 1970, this Earth-type dam reaches a height of 30 feet and has a storage capacity of 150 acre-feet. With a controlled spillway and low hazard potential, Wahl serves as a key component in managing the flow of TR-DEEP CR river.

Despite its age, Wahl has been inspected regularly, with the last assessment taking place in August 2009. The dam is in good condition and poses a low risk of failure. However, its risk assessment indicates a very high risk level, emphasizing the importance of ongoing monitoring and maintenance to ensure its continued functionality. The presence of one valve outlet gate and its location within the Tulsa District highlight Wahl's significance in the region's water management infrastructure.

Overall, Wahl's role as a water resource in the Oklahoma landscape underscores the importance of maintaining and regulating such structures to safeguard against potential risks and ensure sustainable water management practices. As climate change continues to impact water resources, understanding and actively managing structures like Wahl are essential for mitigating potential hazards and preserving the integrity of our water systems for future generations.

Year Completed

1970

Dam Length

300

Dam Height

30

River Or Stream

TR-DEEP CR

Primary Dam Type

Earth

Hydraulic Height

25

Nid Storage

150

Structural Height

30

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

30
       
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.