Scs-Chigley Sandy Creek Site-07 Reservoir Report

Last Updated: December 14, 2025

SCS-Chigley Sandy Creek Site-07, located in Murray County, Oklahoma, is a state-regulated dam designed by the USDA NRCS in 1955 for flood risk reduction along the TR-Chigley Sandy Creek.


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Summary

This earth dam stands at a height of 32 feet with a hydraulic height of 26 feet and a length of 1350 feet, providing a storage capacity of 411 acre-feet. The dam includes a controlled spillway and a single valve outlet gate for water release.

Despite its age, the dam's hazard potential is classified as low, with no specific condition assessment rating provided. While the last inspection date is listed as 1980, the dam is still considered to meet guidelines for emergency action plans and risk management measures. The risk assessment for this site is very high (1), indicating the importance of continued monitoring and maintenance to ensure the safety and functionality of this critical infrastructure in the face of changing climate conditions.

Year Completed

1955

Dam Length

1350

Dam Height

32

River Or Stream

TR-CHIGLEY SANDY CREEK

Primary Dam Type

Earth

Surface Area

27

Hydraulic Height

26

Nid Storage

411

Structural Height

32

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

32
       
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.