 The river marks the border between Zaimokuza and Yuigahama.In administrative terms, the municipality of Kamakura borders with Yokohama to the north, with Zushi to the east, and with Fujisawa to the west.It includes many areas outside the Seven Entrances as Yamanouchi, , Shichirigahama, and Ofuna, and is the result of the fusion of Kamakura proper with the cities of Koshigoe, absorbed in 1939, Ofuna, absorbed in 1948, and with the village of Fukasawa, absorbed in 1948.