Kennewick is now the largest of the three cities and relies on light industry and retail to support their thriving economy.
The Hanford Reach is the last free-flowing stretch of the ColumbiaRiver in the United States and was recently designated as a National Monument by President Clinton.
Once the two small communities of Enterprise and Heminger City, the City of West Richland was the Tri-Cities growth leader during the decade of the 1990’s, doubling its population.
Sometimes, when the river is in flood, the ColumbiaRiver is able to exceed the flow of the Mississippi.
Some of the largest tributaries are the Snake River, the Willamette River, the Kootenay River, the Pend Oreille River, the Cowlitz River, and the Spokane River.
The ColumbiaRiver (or the Mighty Columbia as it is sometimes called because of its large water volumes) was named after the first European ship to travel up the river on May 11, 1792.