Windburn Mary M Reservoir Report

Last Updated: December 7, 2025

Windburn Mary M is a privately owned dam located in Grady, Oklahoma, along the TR-WEST WINTER CREEK.


°F

°F

mph

Wind

%

Humidity

Summary

Constructed in 1950, this earth dam stands at a height of 35 feet and spans a length of 650 feet, with a storage capacity of 490 acre-feet. The dam is regulated and inspected by the OWRB, with a controlled spillway and a low hazard potential.

Despite being classified as a low hazard potential structure, Windburn Mary M poses a very high risk due to its location and the potential consequences of failure. The dam's condition assessment is currently not rated, and the last inspection was conducted in 2001. The emergency action plan for the dam is not prepared, raising concerns about the preparedness for any potential emergencies.

With its stone core and soil foundation, Windburn Mary M serves purposes beyond flood control, highlighting the importance of proper management and maintenance of water resources in the face of climate change. As water resource and climate enthusiasts, it is crucial to monitor and advocate for the safety and sustainability of structures like Windburn Mary M to ensure the protection of communities and the environment.

Year Completed

1950

Dam Length

650

Dam Height

35

River Or Stream

TR-WEST WINTER CREEK

Primary Dam Type

Earth

Surface Area

23

Hydraulic Height

35

Nid Storage

490

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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.