Return to top of page. In 1973, the Corps of Engineers was requested to provide wastewater management planning assistance to Washington State and counties in the basin. The resulting study concentrated on Yakima basin water quality and wastewater management assistance to the Washington State Department of Ecology to help meet water quality planning responsibilities. A Yakima Valley Regional Water Management Study was provided the Department of Ecology in 1978 for use in their November 1978 statewide 208 Plan. Study efforts were then suspended pending determination of study priorities by the state of Washington.
Study is now complete.
Return to top of page. In June 1985, the Yakima Confederated Indian Nation requested federal assistance in providing flood protection for the reservation residents from Toppenish Creek. Reconnaissance studies indicated that no alternatives for flood damage reduction measures in the White Swan area were justified. Return to top of page.