The Bishop River is a river in the Pacific Ranges of the Coast Mountains, flowing west from the western edge of the Lillooet Icecap to join the Southgate River east of the Homathko Icefield. Bishop River Provincial Park surrounds the upper course of the river, from the source at the Lillooet Icecap to midway along its course above its confluence with t…The Bishop River is a river in the Pacific Ranges of the Coast Mountains, flowing west from the western edge of the Lillooet Icecap to join the Southgate River east of the Homathko Icefield. Bishop River Provincial Park surrounds the upper course of the river, from the source at the Lillooet Icecap to midway along its course above its confluence with the Southgate.