6.2.2 Dissected plains, rises and low hills of the Sedimentary Western Plains
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In the Heytesbury region the drainage has been strongly influenced by the deposition of strand lines from the retreating sea, forming a rectilinear pattern of parallel arcuate tributaries perpendicular to rivers draining south-west. The development of the drainage has been associated with the Late Neogene uplift of the adjacent Otways Ranges, between 2 Ma and 1 Ma (Sandiford 2003). The deep dissection has resulted in numerous landslides in the marl, many of which remain active. |  |
Soil-landform unit | Original unit ID | Unit description | Area (km2) |
| Tomawhawk Creek L.S. | Deep valleys (dissected leteritic plateaux) | 134 | |
| Anglesea L.S. | Coastal moderately dissected hills | 39 | |
165 | Gently undulating rises (Jancourt) | 12 | |
| Bellbrae L.S. | Rolling hills (dissected lateritic plateaux) | 18 | |
| Waare L.S. | Dissected rolling hills with remnant plain cappings | 73 | |
140 | Undulating plains with fault scaprs (Timboon West) | 111 | |
141 | Undulating low hills (Paaratte) | 134 | |
163 | Gently undulating ridge crests (Elingamite) | 11 | |
| Waare L.S. | Dissected rolling hills with remnant plain cappings | 79 | |
| Waare L.S. | Roling hills | 117 | |
20 | Undulating alluvial plains and valley sides (Curdies River) | 148 |
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