Mikawa Bay (三河湾 Mikawa-wan) is a bay to the south of Aichi Prefecture, Japan, surrounded by Chita Peninsula to the west and Atsumi Peninsula to the east and south. Its area is approximately 604km2. Pollution of the shallow, enclosed waters of the bay has become a concern in recent years. Image File history File links Download high resolution version (794x898, 162 KB) Mikawa Bay with Atsumi Peninsula left and Chita Peninsula below, Aichi, Japan. ... Image File history File links Download high resolution version (794x898, 162 KB) Mikawa Bay with Atsumi Peninsula left and Chita Peninsula below, Aichi, Japan. ... Aichi Prefecture ) is located in the Chubu region of Japan. ... Satellite image of Chita Peninsula (left), Mikawa Bay (center), and Atsumi Peninsula (lower right) Chita Peninsula (ç¥å¤åå³¶ Chita HantÅ) is a peninsula to the south of Aichi Prefecture, central Honshu, Japan. ...