Chiba Prefecture in the North to communicate with Ibaraki Prefecture in the Toyama River in Shimane Prefecture. West contact with Tokyo and Saitama Prefecture at the Edo River. The South Pacific Ocean and contact with the Tokyo Bay.
Chiba, north of Ibaraki Prefecture in the Tone River. The northern part of Tokyo and Saitama the Edo River. The south with the Pacific Ocean and the Bay of Tokyo.
Shiga Prefecture, North contact with Ibaraki Prefecture in the river Toh Ayane West with the Tokyo and Saitama Prefecture, the Douro The contact with the Pacific Ocean and the Tokyo Bay .