The Lower Yakima River GRP (YAK-GRP) will cover a 123.4-mile reach of the Yakima River from the I-82/US-12 Bridge in Richland at river mile 4.5 (bordering the Middle Columbia River McNary Pool GRP), to the Roza Diversion Dam at river mile 127.9. The Lower Yakima River passes through sections of Water Resource Inventory Areas 37, 38, and 39, borders the Yakama Nation, and impacts numerous local communities including: Pomona, East Selah, Selah, Fruitvale, Yakima, Terrace Heights, Union Gap, Wapato, Buena, Zillah, Granger, Satus, Sunnyside, Mabton, Grandview, Byron, Apricot, Prosser, North Prosser, Whitstran, Gibbon, Benton City, West Richland, and Richland. Oil pollution threats found within the planning area include: two power plants, over 100 miles of BNSF rail line along with other short lines, and oil storage tanks from agricultural/manufacturing sources, as well as risks associated with vehicle traffic on I-82 and other roadways. The Lower Yakima River is a new GRP.
View the Lower Yakima River GRP (June 2017) (PDF 26 MB)
No interim updates currently available
U.S. Environmental Protection Agency
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