Oknoname 149006 Reservoir Report

Last Updated: December 6, 2025

Oknoname 149006 is a privately owned dam located in Colony, Oklahoma, along Spring Creek.


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Summary

Built in 1965, this Earth type dam stands at 26 feet tall and stretches 600 feet in length, with a storage capacity of 77 acre-feet. It serves a primary purpose other than flood control or water supply, and is regulated by the Oklahoma Water Resources Board.

The dam has a low hazard potential and a very high risk assessment rating, indicating the need for vigilant risk management measures. Despite its age, the dam's condition assessment is currently listed as "not rated", with the last inspection conducted in 2006. The dam features a controlled spillway with a width of 1 foot and one valve outlet gate.

Overall, Oknoname 149006 is a significant structure in the water resource management of Washita County, providing essential storage capacity and flood control along Spring Creek. It is important for water resource and climate enthusiasts to monitor the condition and risk associated with this dam to ensure the safety and sustainability of the surrounding area.

Year Completed

1965

Dam Length

600

Dam Height

26

River Or Stream

SPRING CREEK

Primary Dam Type

Earth

Surface Area

3

Hydraulic Height

20

Nid Storage

77

Structural Height

26

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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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.