Roy Farms Irrigation Pond Reservoir Report
Nearby: Gamache Dam Evans Konnowac Dam
Last Updated: December 15, 2025
Roy Farms Irrigation Pond, located in Yakima, Washington, is a privately owned water resource designed for irrigation purposes.
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Summary
This earth dam structure stands at a hydraulic height of 15 feet with a structural height of 14 feet, providing a storage capacity of 15 acre-feet and a surface area of 1.6 acres. Completed in 1989, this pond serves as a crucial water source for agricultural activities in the region.
However, despite its importance, the irrigation pond poses a high hazard potential with a poor condition assessment as of the last inspection in July 2018. The dam's emergency action plan (EAP) is outdated, raising concerns about its readiness to handle potential risks. With the Washington Department of Ecology overseeing state regulation, inspection, and enforcement, there is a need for improved risk management measures to ensure the safety and reliability of this vital water resource.
As climate change continues to impact water availability and quality, the maintenance and monitoring of structures like Roy Farms Irrigation Pond become increasingly crucial. With the hazard potential and condition assessment in mind, it is essential for the owners and regulators to prioritize infrastructure upgrades and emergency preparedness to safeguard against potential disasters and ensure sustainable water management for the future.
Year Completed |
1989 |
Dam Length |
1080 |
River Or Stream |
Tr-Siphon Creek-Offstream |
Primary Dam Type |
Earth |
Surface Area |
1.6 |
Hydraulic Height |
15 |
Nid Storage |
15 |
Structural Height |
14 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
15 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Yakima River Above Ahtanum Creek At Union Gap
|
14200cfs |
Ahtanum Creek At Union Gap
|
197cfs |
Granger Drain At Granger
|
13cfs |
Columbia River Below Priest Rapids Dam
|
124000cfs |
Yakima River At Umtanum
|
6380cfs |
Yakima River At Mabton
|
28900cfs |
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.
Roy Farms Irrigation Pond