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2.1.5 Alluvial terraces, floodplains and swamps of the Western Uplands

Alluvial flats are a common feature in most valley floors. In some valleys, the majority of the alluvium has been deposited in episodes of drainage disruption and blockages during the Late Neogene volcanism. Examples include the extensive alluvial flats of the Lal Lal Swamp and Dog Trap Creek. Some minor sandy deposits are associated with the Lal Lal swamp (lunette).

Soil types present include dark self-mulching clays, texture contrast soils, some gradational soils and minor sandy soils.

Geomorphic unit 2.1.5
Soil-landform units

Soil-landform unit
Original unit ID
Unit description
Area (km2)
2
Swamps and depressions (e.g. north-west of Millbrook)
11
247
Swamp (Lal Lal)
5
20
Alluvial plain and valley sides (e.g. Moorabool River)
91
69
Gently undulating extremely low ridge (Lal Lal)
4
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