Benton County topographic maps

Native Americans populated the area around modern-day Kennewick for millennia before being discovered and settled by European descendants. These inhabitants consisted of people from the Umatilla, Wanapum, Nez Perce, and Yakama tribes. Kennewick's low elevation helped to moderate winter temperatures. On top of…

Average elevation: 153 m

The original people of the region were the Chemnapum Indians (closely related to the Wanapum tribe), living near the mouth of the Yakima River. Lewis and Clark passed through the area in 1805, and an expedition of the Army Corps of Topographical Engineers headed by Robert E Johnson mapped the Yakima Valley in…

Average elevation: 146 m