The summer light lasts longer and the winter nights are milder in Pasco, Washington. The summer light lasts longer and winter nights are milder in Pasco, Washington. The confluence of the mighty Snake, Yakima and Columbia rivers creates a natural environment that demands exploration and provides recreation for boaters and fishermen. Set in a high desert region, the Pasco KOA is centrally located in the Tri-Cities region so campers can easily move from event to attraction. The area has 10 golf courses for the beginner to the pro. At Sacajawea State Park, look through the eyes of Lewis and Clark's Shoshone guide as you tour her namesake interpretive center and meander through a traditional Wanapum village. Discover why Washington calls itself the "New World" wine region as you tour the many vineyards in the Yakima and Walla Walla valleys. Visit Kennewick's Columbia Park, known for its festivals and hydroplane races. At the end of a fulfilling day, relax at the Pasco KOA - your Tri-Cities home base. Pool: Open all year. Max pull thru: 55 feet. Your hosts: Travis and Tricia Lundquist.