Scs-Tonkawa Creek Site-006 Reservoir Report

Last Updated: December 6, 2025

SCS-Tonkawa Creek Site-006 is a state-regulated earth dam located in Anadarko, Oklahoma, with a primary purpose of flood risk reduction.


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Summary

Constructed in 1968 by the USDA NRCS, this dam stands at 18 feet high and stretches 1240 feet in length, with a maximum storage capacity of 64 acre-feet. The dam's spillway, measuring 1 foot in width, is of the controlled type, and it is equipped with a single valve outlet gate for water release.

Despite being classified as having a low hazard potential, SCS-Tonkawa Creek Site-006 is known to have a very high risk assessment, indicating the importance of regular inspections and maintenance. The last inspection date recorded was in 1980, with an inspection frequency of every 5 years. While the dam's condition is currently listed as "not rated," the risk management measures and emergency action plan for this site are not specified in the available data. Climate and water resource enthusiasts in the area should keep a close watch on updates regarding the safety and management of this essential flood risk reduction infrastructure.

Year Completed

1968

Dam Length

1240

Dam Height

18

River Or Stream

TR-TONKAWA CR

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

16

Nid Storage

64

Structural Height

18

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

18
       
Seasonal Comparison

Weather Forecast

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.