Smith Marvin Reservoir Report

Last Updated: December 6, 2025

Smith Marvin is a privately owned irrigation dam located in Muskogee, Oklahoma.


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Summary

Built in 1978, this earth dam stands at a height of 20 feet and has a storage capacity of 72 acre-feet. The dam, situated on TR0GEORGES FORK CR, serves the primary purpose of irrigation and is regulated by the Oklahoma Water Resources Board (OWRB). With a spillway width of 1 foot and a maximum discharge of 348 cubic feet per second, Smith Marvin is equipped to handle controlled water releases efficiently.

Despite its low hazard potential, Smith Marvin is classified as having a very high risk due to its condition assessment being labeled as "Not Rated." The dam has not been inspected since March 2004, with an inspection frequency of every 5 years. The dam's emergency action plan (EAP) status is unclear, and there is no information available on whether inundation maps or risk management measures have been prepared. With its location in a high-risk area, water resource and climate enthusiasts may find Smith Marvin an intriguing case study in dam safety and maintenance practices.

Year Completed

1978

Dam Length

1100

Dam Height

20

River Or Stream

TR0GEORGES FORK CR

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

17

Nid Storage

72

Structural Height

20

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

20
       
Seasonal Comparison

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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.