Shaller No.3 Reservoir Report

Last Updated: December 7, 2025

Shaller No.3 is a privately owned dam located in Cheyenne, Oklahoma, along the TR-Washita River.


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Summary

Completed in 1964, this earth dam stands at 27 feet high and stretches 300 feet in length, with a storage capacity of 70 acre-feet. The dam serves multiple purposes, including flood control and irrigation, and is regulated by the Oklahoma Water Resources Board.

Despite its low hazard potential, Shaller No.3 is classified as having a very high risk due to its location and potential impact on the surrounding area in the event of a failure. The dam is equipped with a controlled spillway and a single valve outlet gate for water release. Inspections are conducted every five years, with the last assessment completed in 2010. The dam's condition is currently rated as "Not Rated," highlighting the need for further evaluation and potential risk management measures.

As water resource and climate enthusiasts, the intricate details of Shaller No.3 offer a fascinating glimpse into the complex world of dam infrastructure and management. From its construction history to its current risk assessment, this dam exemplifies the delicate balance between water resource utilization and environmental protection. With its strategic location along the TR-Washita River, Shaller No.3 serves as a crucial piece of Oklahoma's water management system, showcasing the importance of sustainable infrastructure practices in the face of changing climate conditions.

Year Completed

1964

Dam Length

300

Dam Height

27

River Or Stream

TR-WASHITA RIV

Primary Dam Type

Earth

Hydraulic Height

27

Nid Storage

70

Structural Height

27

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

27
       
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.