Yakima Basin Water Supply - June Forecast

Media Contact: Annette Ross, (208) 378-5322, aross@usbr.gov

For Release: June 07, 2018

YAKIMA, Wash. – The Bureau of Reclamation’s June 2018 Total Water Supply Available forecast for the Yakima basin indicates the water supply will adequately satisfy senior and junior water rights this irrigation season.

“The Basin weather has oscillated from month to month; a very wet April was followed by a very warm and “dry” May. The rapid and heavy snowmelt in May brought on very high flows and has exhausted much of the snowpack,” said Chuck Garner, Yakima Project River Operations supervisor. “Never-the-less, with the reservoirs full, the Yakima basin water supply for the 2018 season will be adequate to fully meet demands this season.”

Reclamation will provide water supply forecasts monthly through July. Specific water delivery levels will not be determined until later in the year after reservoir storage begins to decline.

This forecast is based on flows, precipitation, snowpack, and reservoir storage as of June 1, along with estimates of future precipitation and river flows. Other future weather conditions that determine the timing of the runoff, and the demand for water also are critical in determining streamflows, prorations, and the extent to which the reservoirs fill.

If spring precipitation and runoff are unfavorable, Reclamation still expects an adequate supply. Because longer term weather conditions can be unpredictable, Garner recommends water conservation always be considered by users in the Yakima basin.

For more information, visit Reclamation’s website at https://www.usbr.gov/pn/hydromet/yakima.

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Reclamation is the largest wholesale water supplier in the United States, and the nation's second largest producer of hydroelectric power. Its facilities also provide substantial flood control, recreation, and fish and wildlife benefits. Visit our website at https://www.usbr.gov and follow us on Twitter @USBR.

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