Scs-Delaware Creek Site-108 Reservoir Report

Last Updated: December 28, 2025

SCS-Delaware Creek Site-108 in Cyril, Oklahoma is a state-regulated earth dam designed by USDA NRCS with a primary purpose of flood risk reduction.


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Summary

Completed in 1979, this dam stands at a height of 39 feet and has a hydraulic height of 36 feet. It has a normal storage capacity of 58 acre-feet and a maximum storage capacity of 377 acre-feet. The dam spans a length of 870 feet and has a spillway width of 1 foot.

Despite being classified as having a low hazard potential, the risk assessment for SCS-Delaware Creek Site-108 is labeled as "Very High (1)". The dam's condition assessment is marked as "Not Rated", with the last inspection date recorded in 1980. Emergency action plans (EAP) and risk management measures for this structure are currently not available, and there has been no update on the inundation maps prepared for the area. The dam is under the jurisdiction of OWRB in Caddo County, Oklahoma, and is located along the West Fork river.

Water resource and climate enthusiasts will find SCS-Delaware Creek Site-108 to be an interesting case study in dam infrastructure, particularly in terms of flood risk reduction in a high-risk area. The dam's design features, storage capacity, and risk assessment provide valuable insight into the management of water resources and the importance of maintaining and monitoring critical infrastructure. The lack of recent inspections and emergency preparedness plans highlight the need for continued attention to this structure to ensure the safety and protection of surrounding communities and ecosystems.

Year Completed

1979

Dam Length

870

Dam Height

39

River Or Stream

WEST FORK

Primary Dam Type

Earth

Surface Area

5

Hydraulic Height

36

Nid Storage

377

Structural Height

39

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

39
       
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.
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