Scs-Quapaw Creek Site-10 Reservoir Report

Last Updated: December 8, 2025

SCS-Quapaw Creek Site-10, located in Lincoln County, Oklahoma, is a state-regulated earth dam designed by the USDA NRCS and completed in 1973 for the primary purpose of flood risk reduction along TR-SAND CREEK.


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Summary

This dam stands at a height of 45 feet and spans 1050 feet, with a storage capacity of 821 acre-feet. It has a controlled spillway and is equipped with a single valve outlet gate for water release.

Despite being classified as low hazard potential, SCS-Quapaw Creek Site-10 is considered to have a very high risk due to its location and impact on the surrounding area in case of failure. The dam has not been inspected since 1980, with an inspection frequency of 5 years, and its condition assessment is currently rated as "Not Rated." While an Emergency Action Plan (EAP) has not been prepared or updated, it is essential for the dam's management and risk mitigation strategies.

As an important infrastructure for flood control in the region, SCS-Quapaw Creek Site-10 plays a crucial role in protecting the community and environment from potential disasters. The dam's design, construction, and maintenance are overseen by the Natural Resources Conservation Service, ensuring that it continues to serve its intended purpose effectively. Climate and water resource enthusiasts would find this site's data and risk assessment particularly intriguing for understanding the complexities of managing water infrastructure in a changing climate.

Year Completed

1973

Dam Length

1050

Dam Height

45

River Or Stream

TR-SAND CREEK

Primary Dam Type

Earth

Surface Area

15

Hydraulic Height

45

Nid Storage

821

Structural Height

45

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

45
       
Seasonal Comparison

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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.