The Wanapum people are similar to the other native inhabitants of the
Columbia River Plateau. The tribe made houses from
tule and cut over 300
petroglyphs into the basalt cliffs. In 1805, according to the journals of the
Lewis and Clark Expedition, the Wanapum, led by their chief Cutssahnem, greeted the expedition and treated its members well, sharing food and entertainment. Adherents to this religion believed that the white man would disappear, if rituals and traditional life was adhered to; instead of participating in armed conflicts, the people prayed. Whether due to this religion or for other reasons, the tribe never fought white settlers, did not sign a treaty with them, and as a result retained no federally recognized land rights. In 1942
Franklin Matthias allowed about 30 Wanapum to remain in their winter camp, with access to their customary fishing ground in the middle of the federal reservation for the
Hanford Engineer Works (part of the
Manhattan Project), and provided daily trucks to transport them from their winter camp on the Columbia River. He did not believe that their loyalty could be questioned. But after WWII they were sealed off from graves and cultural sites on the Hanford site. In 1953 the construction of the
Priest Rapids Dam and the
Wanapum Dam flooded the riverbanks where the Wanapum had lived in traditional tule houses. ==Heritage==