The Avon River rises on the western slopes of the
Illawarra escarpment, near
Calderwood within the
Wollongong local government area and flows generally north, reaching its
confluence with the
Cordeaux River, south of
Wilton. The river descends over its
course. construction of
Avon Dam commenced in 1921 and was completed in 1927. In 1963, the water supply was diverted to meet the increasing needs of the
Illawarra region and now supplies all the Wollongong area. ==See also==