Aomori Prefecture

Located in the southeastern part of Aomori Prefecture on the northern edge of Honshu Island (latitude: 40° 30' north; longitude: 141° 30' east), Hachinohe Port faces the Pacific Ocean.

Alluvial formed by the accumulation of sand sediment transported by the Mabechi River and the Niida River. The soil is assumed to be firm since the sediment contains hardly any peat.

Three currents meet here: the Kuroshio Current (flowing from south to north), the Oyashio Current (flowing south along the Chishima Islands), and the Japan Warm Current (flowing through Tsugaru Strait). Near the coast, the currents generally flow from northeast to southwest at full tide and from southeast to northwest at low tide. The current speed is 0.15 knots or less.

The winds are mostly onshore breezes that blow from the northeast or east during the summer, and offshore breezes that blow from the west-southwest or west during the winter. The annual average wind speed is about 4 m/s.

The sea surface area surrounded by a 370-m line drawn at an angle of 18° 41' from a point located at a distance of 1,329 m at an angle of 26° from Shimo-Otani Sankakuten (15.51 m) (latitude: 40° 34' 29'' north; longitude 141° 28' 02'' east), a 2,200-m line drawn from the point at an angle of 90°, a 3,960-m line drawn from the point at an angle of 122° 50', a line between the point and Hinode Rock (3.3 m), and a line drawn from the rock at an angle of 180° as well as the surface area of the Niida River downstream of the Minato Bridge and Old Mabechi River downstream of the closing levee of the Mabechi River.