Chehalis is a small forestry, agricultural and First Nations community in the Lower Mainland of British Columbia located on Highway 7 on the west bank of the Harrison River between the town of Mission and the resort community of Harrison Hot Springs. Chehalis is the site of Chehalis Indian Reserve No. 5 of the Sts'Ailes people and their government, the Chehalis First Nation. The Chehalis River enters the Harrison near the reserve community, which is on IR No. 5.