Scs-Pryor Creek Site-19 Reservoir Report

Last Updated: December 11, 2025

SCS-Pryor Creek Site-19, located in Chelsea, Oklahoma, is a state-regulated dam designed by the USDA NRCS with a primary purpose of flood risk reduction along the TR-Pryor Creek.


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Summary

Completed in 1979, this earth dam stands at 33 feet tall with a hydraulic height of 30 feet and a length of 2020 feet. It has a storage capacity of 592 acre-feet and a normal storage of 122 acre-feet, serving as a critical infrastructure for managing water resources in Rogers County.

With a controlled spillway and one valve outlet gate, SCS-Pryor Creek Site-19 has a low hazard potential and a risk assessment rating of very high (1). However, the dam's condition assessment is currently not rated, and it has not been inspected since January 1980. Despite this, the dam continues to play a vital role in mitigating flood risks and ensuring water resource management for the surrounding area. Its regulatory oversight by the Oklahoma Water Resources Board (OWRB) underscores the commitment to maintaining the safety and integrity of this essential infrastructure in the face of climate challenges.

Year Completed

1979

Dam Length

2020

Dam Height

33

River Or Stream

TR-PRYOR CREEK

Primary Dam Type

Earth

Surface Area

13

Hydraulic Height

30

Nid Storage

592

Structural Height

33

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

33
       
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.