View north-west over the former Heytesbury Soldier Settlement
0.87% of CMA region
Rolling hills of the Heytesbury region (often referred to as the Heytesbury Soldier Settlement) are formed from Miocene marine clay, marl and limestone. Included are the catchments of Scotts Creek and Cooriemungle Creek. Faulting and slumping of the landscape has led to occasional steep scarps, but most slopes are long, gentle and straight, separated by broad drainage lines. The soils on these Miocene sediments are typically brown, grey and black texture contrast soils, with heavier textured cracking clays lower in the landscape. Soils on these sediments are significantly more fertile than the soils formed on the Neogene sediments in adjacent units (Unit 86). Free lime is often preent at depth in the soil profile. Nearly all native vegetation has been cleared as part of the soldier settlement, apart from a significant remnant stand in the centre of the Heytesbury region. Dairy farming is the main land use. Subsoils are dispersible and gully erosion has occurred along some drainage lines. Landslip and slumping is a major engineering issue that escalates when soils are waterlogged. Drainage lines and lower slopes remain waterlogged for most of the year and are prone to soil compaction (pugging) by stock.
Gentle slopes of the highly dissected remnant plain in the Heytesbury region
Overlooking the remnant vegetation of the Heytesbury Soldier Settlement from Cowleys Creek
Proportion of soil-landform unit
Annual: 900-1000, lowest January (40), highest August (120)
Annual: 14, lowest July (9), highest February (18)
|Seasonal growth limitations|
Temperature: less than 10oC (av.) June-August
Precipitation: less than potential evapotranspiration November-March
Age and lithology
Miocene marine marl. Recent clay, sand and gravel
Cleared areas: Dairy
Minor uncleared areas: Nature conservation
|Elevation range (m)|
|Local relief (m)|
|Drainage density (km/km2)|
Upper slope and crest
Alluvial flats and fans
|Slope and range (%)|
Ecological Vegetation Class
E. obliqua, E. ovata, E. aromaphloia
E. ovata, E. radiata
E. obliqua, E. ovata
In situ marl
Colluvial/alluvial marl and sand
Colluvial/alluvial sand and marl
Alluvial sand and clay
(Corangamite Soil Group)
Brown, grey or yellow texture contrast soils (calcardous subsoils), coarse to fine structure (20)
Mottled brown, yellow and grey texture contrast soils, coarse to fine structure (20)
Mottled yellow and grey texture contrast soils (20)
Grey sandy soil with weakly cemented pan over mottled clay (22)
|Soil type sites|
Clay loam to clay
Sandy loam to clay
Sandy loam to clay
|LAND CHARACTERISTICS, POTENTIAL AND LIMITATIONS|
Heavy textured soils are very prone to pugging damage by cattle. Acidic surface.
All slopes are subject to periodic saturation are prone to severe waterlogging and pugging by cattle. Landslips and slumping of road batters are a major hazard. Soils respond well to subsurface drainage including mole drainage.
Soils are prone to severe waterlogging and pugging by cattle. Saline discharge occurs at toe slopes of landslides and in some drainage lines. Soils respond well to subsurface drainage including mole drainage.
Better draned surface soils of this element render it less prone to pugging by cattle.
Soils are prone to severe waterlogging and pugging by cattle. Soils respond well to subsurface drainage including mole drainage.