The Perry River rises near on the East Gippsland plain and flows in a highly meandering
course generally south, joined by three minor
tributaries before reaching its
confluence with the
Avon River before the Avon empties into
Lake Wellington southeast of . Within Lake Wellington, the Avon forms its confluence with the
Latrobe River, empties into
Bass Strait via the
Mitchell River south of . The river descends over its course. ==Etymology==