Oknoname 141003 Reservoir Report

Last Updated: December 5, 2025

Oknoname 141003, located in Tillman, Oklahoma, is a privately owned dam on TR Deadman Creek with a height of 17 feet and a hydraulic height of 14 feet.


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Summary

Built in 1950, this earth dam serves multiple purposes and has a storage capacity of 56 acre-feet, with a normal storage level of 46 acre-feet. The dam has a controlled spillway and is equipped with one valve outlet gate.

Despite being categorized as having a low hazard potential, Oknoname 141003 is deemed to have a very high risk level, possibly due to its age and condition assessment being labeled as "Not Rated." The dam has not been inspected since November 2010 and is in need of evaluation to ensure its safety and integrity. With its location in a state-regulated area and under the jurisdiction of the Oklahoma Water Resources Board, it is crucial for the dam to undergo regular inspections and maintenance to mitigate any potential risks associated with its structure.

Although Oknoname 141003 currently presents a low hazard potential, its high risk designation underscores the importance of proactive risk management measures and regular inspections. With its storage capacity and location on TR Deadman Creek, the dam plays a significant role in water resource management in the area. Prioritizing its safety and structural integrity through consistent monitoring and maintenance will be essential in ensuring the long-term sustainability and functionality of this critical water infrastructure.

Year Completed

1950

Dam Length

270

Dam Height

17

River Or Stream

TR DEADMAN CREEK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

14

Nid Storage

56

Structural Height

17

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

17
       
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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.