Fuji Five Lakes
The Sagami River drains Lake Yamanaka, the largest and easternmost of the Fuji Five Lakes in Yamanashi Prefecture. It loops northwest, then northeast through Yamanashi, before following a generally southerly course to exit into Sagami Bay of the Pacific Ocean between the cities of Hiratsuka and Chigasaki. It is dammed at several locations along the way, forming a number of reservoir lakes, the largest of which are Lake Sagami and Lake Tsukui.