The Spero River is a perennial river located in the West Coast or South West region of Tasmania, Australia. The Spero River rises below Thirkell Hill on an unnamed range within the Southwest Conservation Area. The river flows generally north by west, joined by the Pery River and one minor tributary before reaching its mouth and emptying into Spero Bay, sou…The Spero River is a perennial river located in the West Coast or South West region of Tasmania, Australia. The Spero River rises below Thirkell Hill on an unnamed range within the Southwest Conservation Area. The river flows generally north by west, joined by the Pery River and one minor tributary before reaching its mouth and emptying into Spero Bay, south east of Point Hibbs, eventually flowing into the Southern Ocean. The river descends 287 metres over its 29-kilometre course.