Chiawana Gleed Ranch Dam Reservoir Report

Last Updated: December 15, 2025

Chiawana Gleed Ranch Dam, located in Yakima, Washington, is a privately owned earth dam that serves primarily for irrigation purposes.


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Summary

Completed in 2003, this structure stands at a hydraulic height of 20.5 feet and a structural height of 25 feet, with a length of 275 feet. With a normal storage capacity of 13.2 acre-feet and a maximum storage of 15 acre-feet, this dam plays a crucial role in water management in the region.

Managed by the Washington Department of Ecology, Chiawana Gleed Ranch Dam has a high hazard potential but is currently in satisfactory condition as of the last inspection in September 2019. The dam's emergency action plan and risk assessment measures are up to date, ensuring preparedness in case of any unforeseen events. Despite having no associated structures or spillway, the dam's location along the Yakima River offstream provides vital irrigation support to the surrounding agricultural lands.

Congressional District 04's representative, Dan Newhouse, oversees the area where Chiawana Gleed Ranch Dam is situated, emphasizing the importance of water resource management and climate resilience. With its strategic role in supporting local agricultural activities and water supply, this dam stands as a critical infrastructure contributing to the sustainability and development of the region's water resources amidst changing climate conditions.

Year Completed

2003

Dam Length

275

River Or Stream

Offstream - Yakima R

Primary Dam Type

Earth

Surface Area

1.5

Hydraulic Height

20.5

Nid Storage

15

Structural Height

25

Hazard Potential

High

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.