Scs-Pryor Creek Site-15 Reservoir Report
Last Updated: December 9, 2025
SCS-Pryor Creek Site-15, located in Chelsea, Oklahoma, is a state-regulated earth dam designed by USDA NRCS in 1976 for flood risk reduction along the TR-Pryor Creek.
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Summary
The dam stands at a height of 22 feet with a hydraulic height of 20 feet and a length of 1460 feet, providing a maximum storage capacity of 255 acre-feet and a normal storage of 27 acre-feet. Despite its low hazard potential and not being rated for condition assessment, the dam has a very high risk assessment ranking, highlighting the importance of regular inspections and maintenance to ensure its safety and effectiveness in mitigating flood risks in the region.
Owned by the state of Oklahoma and regulated by the OWRB, SCS-Pryor Creek Site-15 features a controlled spillway with a width of 1 foot and a single valve outlet gate for water release. While the dam has not been modified in recent years and lacks an emergency action plan, its risk management measures and inundation maps status remain unspecified. With a very high risk rating and a history of only one inspection in 1980, there is a pressing need for updated assessments and emergency preparedness to safeguard the surrounding community and water resources from potential flooding events. Water resource and climate enthusiasts should closely monitor developments at SCS-Pryor Creek Site-15 to ensure its continued efficacy in flood risk reduction and environmental protection efforts.
Year Completed |
1976 |
Dam Length |
1460 |
Dam Height |
22 |
River Or Stream |
TR-PRYOR CR |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
20 |
Nid Storage |
255 |
Structural Height |
22 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Big Cabin Creek Near Big Cabin
|
51cfs |
Verdigris River Near Claremore
|
1770cfs |
Neosho River Near Langley
|
919cfs |
Caney River Near Ramona
|
59cfs |
Neosho River Near Chouteau
|
358cfs |
Verdigris River Near Lenapah
|
804cfs |
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.
Scs-Pryor Creek Site-15