Shimōsa Plateau
Kamagaya is located in the northwestern corner of Chiba Prefecture, approximately 20 kilometers from the prefectural capital of Chiba. It is located on the Shimōsa Plateau, with an elevation of seven to thirty meters above sea level. The Otsu River, which flows into Lake Teganuma, is in the north, and the Okashiwa and Nego Rivers, and the tributaries of the Ebi River, flow into Tokyo Bay, to the south. The 140th east meridian line runs through the center of the city.