Scs-Tonkawa Creek Site-007 Reservoir Report
Last Updated: December 6, 2025
SCS-Tonkawa Creek Site-007, located in Anadarko, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS and completed in 1969 for flood risk reduction along the Tonkawa Creek.
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Summary
The dam stands at 28 feet tall with a hydraulic height of 25 feet and a length of 990 feet, providing a maximum storage capacity of 300 acre-feet. The dam is equipped with a controlled spillway and a single valve outlet gate for efficient water management.
Despite being rated as having low hazard potential, the dam at SCS-Tonkawa Creek Site-007 is considered to be at very high risk according to risk assessment data. The structure has not been inspected since January 1980, with an inspection frequency of 5 years. While the condition assessment remains unrated, emergency action plans and other risk management measures are not currently in place. The dam remains under the jurisdiction of the state regulatory agency, OWRB, ensuring that it meets state permitting, inspection, and enforcement requirements.
Water resource and climate enthusiasts will find SCS-Tonkawa Creek Site-007 to be an intriguing case study in dam infrastructure management. With its historical design by the USDA NRCS and its critical role in flood risk reduction along the Tonkawa Creek, the dam serves as a vital piece of Oklahoma's water resource infrastructure. As discussions around climate change and water management continue to evolve, the risk assessment data for this dam highlights the importance of regular inspections and emergency preparedness to ensure the safety and resilience of our water infrastructure systems.
Year Completed |
1969 |
Dam Length |
990 |
Dam Height |
28 |
River Or Stream |
TONKAWA CREEK |
Primary Dam Type |
Earth |
Surface Area |
16 |
Hydraulic Height |
25 |
Nid Storage |
300 |
Structural Height |
28 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Randlett Park
|
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Collier Landing City
|
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Edgewater Park - Lawton
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Scs-Tonkawa Creek Site-007
Scs Pond No. 26 Near Cyril