Scs-Upper Clear Boggy Creek Site-25 Reservoir Report

Last Updated: December 8, 2025

SCS-Upper Clear Boggy Creek Site-25 is a state-regulated dam located in Pontotoc, Oklahoma, specifically in the city of OLNEY.


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Summary

This earth dam, designed by USDA NRCS, stands at a height of 57 feet and stretches 1330 feet in length. Completed in 1964, its primary purpose is flood risk reduction for the Sheep Creek watershed, with a storage capacity of 2611 acre-feet and a normal storage of 168 acre-feet.

Managed by the Oklahoma Water Resources Board (OWRB), this dam has a controlled spillway and is equipped with a single valve outlet gate. Inspected every 5 years, it has a low hazard potential and is currently rated as "Very High (1)" in terms of risk assessment. Despite its age, the dam's condition remains unrated as of the last inspection in 1980, highlighting the need for ongoing monitoring and potential updates to its emergency action plan to ensure the safety of downstream communities and the surrounding environment. For water resource and climate enthusiasts, SCS-Upper Clear Boggy Creek Site-25 presents a fascinating case study in dam management and the intersection of infrastructure with natural resource conservation in Oklahoma.

Year Completed

1964

Dam Length

1330

Dam Height

57

River Or Stream

SHEEP CREEK

Primary Dam Type

Earth

Surface Area

26

Hydraulic Height

57

Nid Storage

2611

Structural Height

57

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

57
       
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.