Inman Alex Or Jewel Reservoir Report

Last Updated: December 12, 2025

Inman Alex Or Jewel is a privately owned earth dam located in Roger Mills County, Oklahoma.


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Summary

Built in 1980, this dam on TR-SERGEANT CR has a height of 45 feet and a storage capacity of 118 acre-feet. With a low hazard potential and a very high risk assessment rating, the dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, enforcement, and permitting to ensure its safety and compliance with state regulations.

The dam serves a primary purpose of "Other" and is designed with a stone core and soil foundation. It has a controlled spillway and one valve outlet gate. Despite not being rated for condition assessment, the dam has a history of stable operations and poses minimal risk to downstream areas. The surrounding area has a surface area of 5 acres and a drainage area of 560 acres, with a maximum discharge capacity of 25 cubic feet per second.

With its strategic location and crucial role in water resource management, Inman Alex Or Jewel is a significant structure within the Tulsa District of Oklahoma. Enthusiasts of water resources and climate will find this dam to be an intriguing subject for further study, given its unique design, purpose, and risk profile within the context of the local ecosystem and regulatory framework.

Year Completed

1980

Dam Height

45

River Or Stream

TR-SERGEANT CR

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

45

Drainage Area

560

Nid Storage

118

Structural Height

45

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

45
       
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.
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Area Campgrounds