Walla Walla River Basin
and
the Blue Mountains of Washington and Oregon.
The
Walla Walla River basin is located in southeastern
Washington and adjacent Oregon, stretching from the Blue Mountains in the
east to the Columbia River on the west. Major tributaries in the
basin include the Touchet River and Mill Creek. The basin includes
parts of Walla Walla and Columbia Counties in Washington and Umatilla County
in Oregon. Whitman College is located in the City of Walla Walla.
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