Parker Reservoir Dam Reservoir Report
Nearby: Stevenson Dam Evans Far West Pond Dam
Last Updated: December 15, 2025
Parker Reservoir Dam, located in Yakima, Washington, stands as a private structure regulated by the Washington Department of Ecology.
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Summary
Completed in 1955, this earthen dam plays a crucial role in both irrigation and recreational activities, serving as a vital source of water storage for the surrounding area. With a storage capacity of 54 acre-feet, the dam has a hydraulic height of 36 feet and a structural height of 25 feet, providing essential water resources for the Tr-Wide Hollow Creek.
Despite its important functions, Parker Reservoir Dam poses a high hazard potential and has been assessed as being in poor condition during the last inspection in 2017. With a drainage area of 0.5 square miles and a maximum discharge capacity of 570 cubic feet per second, the dam's maintenance and upkeep are critical to ensuring its continued safety and efficiency. As a popular spot for recreational activities, including boating and fishing, the dam's structure and integrity must be closely monitored to prevent any potential risks or hazards to the surrounding community.
As a significant feature in the region's water resource infrastructure, Parker Reservoir Dam's maintenance and regulatory oversight are essential to its continued operation. With its primary purpose being recreation, the dam not only provides water for irrigation but also offers opportunities for outdoor leisure activities. By addressing its current poor condition and high hazard potential, stakeholders can ensure the long-term sustainability and safety of this essential water resource structure.
Year Completed |
1955 |
Dam Length |
340 |
River Or Stream |
Tr-Wide Hollow Creek |
Primary Dam Type |
Earth |
Surface Area |
5.1 |
Hydraulic Height |
36 |
Drainage Area |
0.5 |
Nid Storage |
54 |
Structural Height |
25 |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
36 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Dam Data Reference
Condition Assessment
SatisfactoryNo 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
HighDams 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.
Parker Reservoir Dam