Oknoname 051033 Reservoir Report

Last Updated: January 12, 2026

Oknoname 051033 is a privately owned earth dam located in Chickasha, Oklahoma, with a primary purpose of "Other." The dam, completed in 1970, stands at a height of 32 feet and has a length of 650 feet.


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Summary

It is situated on TR-Rock Hollow Creek and is regulated by the Oklahoma Water Resources Board (OWRB). The dam has a low hazard potential and is not currently rated in terms of its condition assessment.

Despite its low hazard potential, Oknoname 051033 is deemed to have a very high risk, as indicated by a risk assessment rating of 1. The dam has a storage capacity of 100 acre-feet and a maximum discharge rate of 2480 cubic feet per second. It features a controlled spillway and a single valve outlet gate. The last inspection of the dam was conducted in August 2010, with a scheduled inspection frequency of 5 years.

Overall, Oknoname 051033 serves as a significant water resource structure in Grady County, Oklahoma, contributing to flood control and water storage in the region. However, the high risk assessment highlights the importance of ongoing monitoring and maintenance to ensure the safety and integrity of the dam for the surrounding community and the environment.

Year Completed

1970

Dam Length

650

Dam Height

32

River Or Stream

TR-ROCK HOLLOW CREEK

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

32

Nid Storage

100

Structural Height

32

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

32
       
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.