Sims No 2 Reservoir Report

Last Updated: December 5, 2025

Sims No 2, also known as Oknoname, is a private-owned earth dam located in Bryan County, Oklahoma.


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Summary

Completed in 1968, this dam serves primarily for irrigation purposes, with a maximum storage capacity of 92 acre-feet. The dam stands at a height of 28 feet and has a spillway width of 1 foot, ensuring controlled discharge in case of excess water.

Managed by the OWRB, Sims No 2 has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Despite its low hazard potential, the risk assessment for this dam is considered very high, making it important to ensure proper maintenance and monitoring. With its location along the TR-EASTMAN CR river/stream in Murray Hill Church, Sims No 2 plays a crucial role in water resource management in the region.

Although last inspected in 2006, Sims No 2 continues to be regulated, inspected, and enforced by the state of Oklahoma. With a design featuring stone core and soil foundation, this dam exemplifies the importance of proper infrastructure in ensuring water security and availability for irrigation purposes. As climate enthusiasts and water resource advocates, understanding the details and management of dams like Sims No 2 is essential in safeguarding our water resources for future generations.

Year Completed

1968

Dam Length

1000

Dam Height

28

River Or Stream

TR-EASTMAN CR

Primary Dam Type

Earth

Surface Area

2

Hydraulic Height

24

Nid Storage

92

Structural Height

28

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

28
       
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.