Bristol Bay (
Iilgayaq in
Central Yup'ik) is the eastern-most arm of the
Bering Sea, at 57° to 59° North 157° to 162° West in
Southwest Alaska. Bristol Bay is 400 km (250 mi) long and 290 km, (180 mi) wide at its mouth. A number of rivers flow into the bay, including the
Cinder,
Egegik,
Igushik,
Kvichak,
Meshik,
Nushagak,
Naknek,
Togiak, and
Ugashik.