Scs-Roger Moore #1 Reservoir Report

Last Updated: December 6, 2025

SCS-Roger Moore #1, also known as Moore-Hamilton, is a privately owned Earth dam located in Caddo, Oklahoma.


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Summary

Built in 1996 by USDA NRCS, this dam serves the primary purpose of flood risk reduction along Cobb Creek. Standing at 26 feet in height and 450 feet in length, it has a storage capacity of 36 acre-feet and covers a surface area of 8 acres. The dam is regulated by the Oklahoma Water Resources Board and undergoes regular state inspections and enforcement to ensure its structural integrity.

This low-hazard dam has a controlled spillway with a width of 1 foot and is equipped with one valve outlet gate. Although its condition assessment is currently listed as "Not Rated", the risk assessment categorizes it as "Very High (1)". Despite this, the dam meets state regulatory standards and has not required any modification since its completion. With a drainage area of 277 square miles and a maximum discharge capacity of 62 cubic feet per second, SCS-Roger Moore #1 plays a crucial role in managing water resources and mitigating flood risks in the region.

For water resource and climate enthusiasts, SCS-Roger Moore #1 presents an intriguing case study of a privately owned dam designed for flood risk reduction. With its relatively low hazard potential and high-risk assessment, this Earth dam in Oklahoma stands as a vital infrastructure for water management along Cobb Creek. The collaboration between USDA NRCS and state regulatory agencies like the Oklahoma Water Resources Board highlights the importance of maintaining and inspecting such structures to ensure their effectiveness in protecting communities and ecosystems from potential flooding events.

Year Completed

1996

Dam Length

450

Dam Height

26

River Or Stream

COBB CREEK

Primary Dam Type

Earth

Surface Area

8

Hydraulic Height

26

Drainage Area

277

Nid Storage

36

Structural Height

26

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

26
       
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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.