Joshua 12:5

12:5 and ruled over Mount Hermon, Salecah, all of Bashan to the border of the Geshurites and Maacathites, and half of Gilead as far as the border of King Sihon of Heshbon.

Joshua 15:5

15:5 The eastern border was the Salt Sea to the mouth of the Jordan River.

The northern border started north of the Salt Sea at the mouth of the Jordan,

Joshua 17:9

17:9 The border then descended southward to the Valley of Kanah. Ephraim was assigned cities there among the cities of Manasseh, but the border of Manasseh was north of the valley and ended at the sea.