Brown Mart D Reservoir Report

Last Updated: December 21, 2025

Brown Mart D is a privately owned earth dam located in Guthrie, Oklahoma, along Walnut Creek.


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Summary

Completed in 1965, this dam serves primarily for recreation purposes, with a maximum storage capacity of 300 acre-feet and a surface area of 14 acres. Standing at 22 feet tall and 1100 feet long, it is regulated by the Oklahoma Water Resources Board and undergoes regular inspections to ensure its structural integrity.

Despite its low hazard potential, Brown Mart D is classified as having a very high risk due to its age and potential impact on the surrounding area in the event of failure. While the dam is equipped with a controlled spillway and a single valve outlet, it has not been rated for its overall condition. Emergency action plans and risk management measures are not currently in place, raising concerns for the safety of nearby residents and the environment.

Water resource and climate enthusiasts may find Brown Mart D to be a fascinating case study in dam safety and risk assessment. With its location in a high-risk zone and the lack of comprehensive emergency preparedness measures, there is a pressing need for further evaluation and action to mitigate potential threats to the community and ecosystem.

Year Completed

1965

Dam Length

1100

Dam Height

22

River Or Stream

WALNUT CREEK

Primary Dam Type

Earth

Surface Area

14

Hydraulic Height

22

Nid Storage

300

Structural Height

22

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

22
       
Seasonal Comparison

Weather Forecast

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Nearby Streamflow Levels

Brown Mart DNorth Canadian River near Yukon Preview North Canadian River Near Yukon
98.1cfs
98cfs
Brown Mart DNorth Canadian River blw Lk Overholser nr OKC Preview North Canadian River Blw Lk Overholser Nr Okc
3.34cfs
3cfs
Brown Mart DNorth Canadian River at Britton Rd at OKC Preview North Canadian River At Britton Rd At Okc
48.2cfs
48cfs
Brown Mart DNorth Canadian River near El Reno Preview North Canadian River Near El Reno
61.6cfs
62cfs
Brown Mart DCottonwood Creek near Seward Preview Cottonwood Creek Near Seward
62.4cfs
62cfs
Brown Mart DNorth Canadian River near Calumet Preview North Canadian River Near Calumet
76.9cfs
77cfs

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.
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Nearby Reservoirs