Hutchison No.2 Reservoir Report

Last Updated: December 31, 2025

Hutchison No.2 is a privately-owned earth dam located in Ellis, Oklahoma, along the Cinnamon Canyon stream.


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Summary

Built in 1961 by the USDA NRCS, this dam stands at 25 feet tall and serves the primary purpose of flood risk reduction in the area. With a maximum storage capacity of 120 acre-feet and a normal storage capacity of 60 acre-feet, Hutchison No.2 plays a crucial role in mitigating the risk of flooding and protecting the surrounding community.

Managed by the Oklahoma Water Resources Board, Hutchison No.2 is regulated, inspected, and enforced to ensure its structural integrity and functionality. The dam features a controlled spillway and a single valve outlet gate for water release. Despite its low hazard potential, Hutchison No.2 is classified as having a very high risk due to its age and condition assessment being not rated. Emergency action plans have not been prepared or updated for this dam, highlighting the need for continued monitoring and risk management measures to safeguard the community and water resources in the area.

Overall, Hutchison No.2 serves as a vital infrastructure for flood control and water resource management in Ellis, Oklahoma. With its historical significance and ongoing need for maintenance and monitoring, this dam underscores the importance of proactive measures in safeguarding against potential risks and ensuring the resilience of our water infrastructure in the face of changing climate conditions.

Year Completed

1961

Dam Length

214

Dam Height

25

River Or Stream

CINNAMON CANYON

Primary Dam Type

Earth

Surface Area

1

Hydraulic Height

21

Nid Storage

120

Structural Height

25

Outlet Gates

Valve - 1

Hazard Potential

Low

Foundations

Soil

Nid Height

25
       
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.