Scs-Big Wewoka Creek Site-38 Reservoir Report

Last Updated: December 6, 2025

Located in Hughes County, Oklahoma, the SCS-Big Wewoka Creek Site-38 is a state-owned earth dam constructed in 1963 by the USDA NRCS.


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Summary

The primary purpose of this dam is flood risk reduction along Tiger Creek, with a normal storage capacity of 474 acre-feet and a maximum discharge of 3632 cubic feet per second. With a structural height of 35 feet and a length of 1020 feet, this dam plays a crucial role in protecting the surrounding area from potential flooding events.

Managed by the Oklahoma Water Resources Board (OWRB), the SCS-Big Wewoka Creek Site-38 is inspected regularly for safety and compliance. Despite being classified as a low hazard potential structure, the dam's risk assessment is rated as very high due to its critical role in flood risk reduction. Although the condition assessment is not rated, the dam is equipped with a controlled spillway and one outlet valve to manage water levels effectively.

This site, part of the Tulsa District, serves as a key infrastructure for water resource management in the region. With a rich history dating back to the early 1960s, the SCS-Big Wewoka Creek Site-38 continues to be a reliable asset for mitigating flood risks and ensuring the safety of the community in Wetumka, Oklahoma.

Year Completed

1963

Dam Length

1020

Dam Height

35

River Or Stream

TIGER CREEK

Primary Dam Type

Earth

Surface Area

92

Hydraulic Height

35

Nid Storage

1962

Structural Height

35

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

35
       
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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Area Campgrounds