Mahar Carl E Reservoir Report

Last Updated: December 13, 2025

Mahar Carl E is a privately owned Earth dam located in Perkins, Oklahoma, along the TR-CORDUROY CREEK.


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Summary

Completed in 1970, this dam stands at a height of 20 feet and has a storage capacity of 120 acre-feet. With a spillway width of 1 foot and a controlled spillway type, this dam has a low hazard potential but is classified as having a very high risk assessment.

Although the condition assessment of Mahar Carl E is currently listed as "Not Rated," it is regularly inspected by the Oklahoma Water Resources Board. The dam features a valve outlet gate and has not undergone any modifications since its construction. Despite its relatively small surface area of 10 acres, Mahar Carl E plays a crucial role in water resource management and flood control in the region.

Situated in Lincoln County, Oklahoma, Mahar Carl E is under state jurisdiction and regulation. It is subject to state permitting, inspection, and enforcement, ensuring its structural integrity and safety. With its strategic location and design, this Earth dam serves as a vital infrastructure for managing water resources and mitigating the impacts of climate-related events in the area.

Year Completed

1970

Dam Length

645

Dam Height

20

River Or Stream

TR-CORDUROY CREEK

Primary Dam Type

Earth

Surface Area

10

Hydraulic Height

20

Nid Storage

120

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.