Kennewick, Pasco, Richland, and West Richland are part of the Tri-Cities region. The combined population (123,443) of these cities makes it the fourth largest community in Washington State. The cities are located at the confluence of the Snake, Columbia, and Yakima Rivers. Pasco is upriver of the site where the Lewis & Clark Expedition made camp in October 16 - 18, 1805, at the confluence of the Snake and Columbia Rivers.

The Port of Pasco is on the left bank and Kennewick is on the right as you look down river. Richland and West Richland are further upriver. (This picture which includes the cable bridge and train bridge was provided courtesy of the East Benton County Historical Museum).