Scs-Long Branch Creek Site-07a Reservoir Report

Last Updated: December 6, 2025

SCS-Long Branch Creek Site-07a, located in Noble, Oklahoma, is a state-regulated earth dam designed by USDA NRCS with a primary purpose of flood risk reduction on the TR-Greasy Creek.


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Summary

Built in 1960, this dam stands at a height of 26 feet and has a hydraulic height of 22 feet, with a total length of 1090 feet. It has a storage capacity of 364 acre-feet and a normal storage of 82 acre-feet, serving as a crucial structure for water resource management in the area.

Despite its low hazard potential, the dam at SCS-Long Branch Creek Site-07a has not been rated for its condition assessment. The last inspection took place in 1999, with an inspection frequency of 5 years. The risk assessment for this dam is very high, with a DSAC assigned date and no risk management measures specified. With a controlled spillway and one valve outlet, this dam plays a critical role in mitigating flood risks and ensuring water resources in the region are managed effectively.

Year Completed

1960

Dam Length

1090

Dam Height

26

River Or Stream

TR-GREASY CREEK

Primary Dam Type

Earth

Surface Area

18

Hydraulic Height

22

Nid Storage

364

Structural Height

26

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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.