Scs-Finn Creek Site-021 Reservoir Report

Last Updated: December 14, 2025

SCS-Finn Creek Site-021 is a state-regulated Earth dam located in McClain, Oklahoma, designed by the USDA NRCS with a primary purpose of flood risk reduction.


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Summary

Completed in 1965, this structure stands at a height of 52 feet and spans 1290 feet along Finn Creek. With a storage capacity of 371 acre-feet and a spillway width of 1 foot, this dam plays a crucial role in managing floodwaters and protecting the surrounding area from potential hazards.

Despite its fair condition assessment and high hazard potential, SCS-Finn Creek Site-021 is equipped with a valve outlet gate and undergoes regular inspections to ensure its structural integrity. The dam's risk assessment categorizes it as very high (1), highlighting the importance of proper risk management measures and emergency preparedness. As a key component in the flood risk reduction strategy for the region, this site serves as a vital resource for water resource and climate enthusiasts interested in understanding the intersection of infrastructure, regulation, and environmental protection in Oklahoma.

Year Completed

1965

Dam Length

1290

Dam Height

52

River Or Stream

FINN CREEK

Primary Dam Type

Earth

Surface Area

11

Hydraulic Height

52

Nid Storage

371

Structural Height

52

Outlet Gates

Valve - 1

Hazard Potential

High

Foundations

Soil

Nid Height

52
       
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.