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3.3.3 Alluvial terraces and floodplains associated with Dissected low hills of the Southern Uplands

Alluvial flats and alluvial terraces have formed in the wide valley floors at the base of the rolling hills. The wide floodplain of the Barwon River from Gerangamete to Birregurra has developed in response to the changes in base levels associated with the periodic damming of the river by Newer Volcanic basalt flows around Winchelsea and the fluctuating sea levels of the Quaternary.

Associated soil types are gradational (often grey or dark) soils and sands over clay.

Geomorphic unit 3.3.3
Soil-landform units

Soil-landform unit
Original unit ID
Unit description
Area (km2)
Carlisle L.S.Elevated dissected terraces (Gellibrand River)
25
Barwon River L.S.Floodplain (Barwon River and tributaries)
57
Gellibrand River L.S.Floodplain (Gellibrand, Aire and Barham rivers)
42
Point Roadknight L.S.Longitudinal coastal dunes
7
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