The Bothnian Bay or Bay of Bothnia (, ) is the most northern part of the Gulf of Bothnia

Gulf of Bothnia

The Gulf of Bothnia is the northernmost arm of the Baltic Sea. It is situated between Finland's west coast and Sweden's east coast. In the south of the gulf lie the Åland Islands, between the Sea of Åland and the Archipelago Sea.-Name:...

, the northern part of the Baltic Sea

Baltic Sea

The Baltic Sea is a brackish mediterranean sea located in Northern Europe, from 53°N to 66°N latitude and from 20°E to 26°E longitude. It is bounded by the Scandinavian Peninsula, the mainland of Europe, and the Danish islands. It drains into the Kattegat by way of the Øresund, the Great Belt and...

. Its northernmost point is situated in Töre

Töre

Töre is a locality situated in Kalix Municipality, Norrbotten County, Sweden with 1,146 inhabitants in 2005.Its harbour is the northernmost of the Bothnian Bay that is accessible to commercial vessels. The European route E10 passes through Töre.- References :...

. The bay is bounded by Finland

Finland

Finland , officially the Republic of Finland, is a Nordic country situated in the Fennoscandian region of Northern Europe. It is bordered by Sweden in the west, Norway in the north and Russia in the east, while Estonia lies to its south across the Gulf of Finland.Around 5.4 million people reside...

 to the east, Sweden

Sweden

Sweden , officially the Kingdom of Sweden , is a Nordic country on the Scandinavian Peninsula in Northern Europe. Sweden borders with Norway and Finland and is connected to Denmark by a bridge-tunnel across the Öresund....

 to the west, and the Kvarken

Kvarken

Kvarken is the narrow region in the Gulf of Bothnia separating the Bothnian Bay from the Bothnian Sea...

 sound to the south.

Major ports on Finnish side are the ports in Oulu

Port of Oulu

Port of Oulu is a complex of four separate harbours located at the mouth of Oulujoki river in Oulu, Finland. Port of Oulu is a corporation owned by the City of Oulu. Annual average of 3 million tons of cargo is shipped on 500 vessels...

, Kemi and Raahe.

The maximum depth of bay is 482 feet (146.9 m).

The bay has the highest rate of rising of land by post-glacial rebound

Post-glacial rebound

Post-glacial rebound is the rise of land masses that were depressed by the huge weight of ice sheets during the last glacial period, through a process known as isostasy...

in the Baltic Sea.