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Geomorphology of Victoria
This dataset provides a hierarchical framework of geomorphological spatial entities at three tiers (Tier 1 represents the coarsest scale, Tier 3 representing the finest scale). Over the last decade in Victoria, geomorphology has been used to create a hierarchical classification of landforms and landscapes, known as the Victorian Geomorphology Framework (VGF). The VGF is a spatial framework consisting of a hierarchical system of land unit descriptions. The framework hierarchy is a spatial system to assist planning, monitoring and reporting for natural resource management in Victoria and Australia. The VGF describes and defines details of Victorias landscapes and provides a hierarchy to align past and future soil and land information. The upper level (Tier 1) has 8 Divisions and approximates to a scale of 1:1 000 000 to 5 000 000. Tier 2 has 34 categories, approximating to a scale of 1:500 000 to 2 000 000 while Tier 3 has 95 categories approximating to a scale of 1:100 000 to 500 000. Many of the boundaries are derived from the aggregation of soil-landform units/land systems, forming a hierarchical land type, particularly in relation to landform. The GMU250 layer includes soil erosion susceptibility assessments sourced from soil information contained in underlying regional studies which have been developed at regional scales of 1:100 000 or finer. The regional Land Resource Assessment (LRA) mapping at 1:100 000 scale effectively equates to the fourth tier of GMU mapping detail. As these units have been scaled up for use at the third tier, i.e. GMU250, it has meant a degree of generalisation across the LRA units. In these cases the dominant soil type, based upon maximum spatial extent, has been used for the susceptibility assessments. More information on the geomorpohology of Victoria can be found on Victorian Resources Online (http://vro.depi.vic.gov.au/dpi/vro/vrosite.nsf/pages/landform_geomorphology#mapping). DOI 10.4226/92/58e6f2752cfd6
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Landsystems
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The land systems of Victoria, as described and delineated by Rowan in 1989, provide a statewide coverage of land type that are applicable to a wide range of land resource management and planning programs. This dataset consolidates a broad range of land resource information drawn from an uneven base to provide a consistent, if limited, coverage of the lands of Victoria. The explicit links with the original sources of data have been retained. The data set was developed from a range of studies of varying methologies and intensities over some forty years. The reliability of the information varies across regions accordingly.
Land Systems of Victoria at 1:250 000
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The land systems of Victoria, as described and delineated by Rowan in 1989, provide a statewide coverage of land types that are applicable to a wide range of land resource management and planning programs. These land systems sit within a geomorphological framework developed by Jenkin and Rowan. This data set consolidates a broad range of land resource information drawn from an uneven base to provide a consistent, if limited, coverage of the lands of Victoria. The explicit links with the original sources of data have been retained. The data set was developed from a range of studies of varying methodologies and intensities over some forty years. The reliability of the information varies across regions accordingly. This edition (3) incorporates new survey material [Shires of West Wimmera, Lowan, West Towong and East Gippsland (east of Snowy River)] as well as changes in the nomenclature with the substitution of broad slope class with relative relief classes (eg. plains, hills, mountains). An addition factor (lithological age) was also added to the key. There is still a link with the Edition 2 version in the main Land Systems table. More information on land system mapping can be found on Victorian Resources Online http://vro.depi.vic.gov.au/dpi/vro/vrosite.nsf/pages/landform_systems DOI 10.4226/92/58e727e0dd1be
Land units of the Gippsland region of Victoria
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A spatial dataset of soil and landform classification in Gippsland. The map units are broad `packages' of land - divided primarily on the basis of soil type, landform pattern and geology. It contains soil and land information at a scale of 1:100 000 for all land in the region. The dataset has been derived from a combination of past studies and has been collated primarily by Ian Sargeant and Mark Imhof from 1994 to 2013. Data from older surveys have also been included in this consolidated dataset. Mapping in east and northern Gippsland regions is restricted to freehold lands. Webpages on Victorian Resources Online provide a description of each of the map units and indicate source studies used to define the map unit. In June 2013 a dominant soil type was assigned to each unit (by David Rees, Mark Imhof and Ian Sargeant) to facilitate the creation of a digital soil map of Victoria. Australian Soil Classification (Order and SubOrder) have been included in the dataset's attribute table. At the map scale of this dataset soil-landform units are not homogeneous. For each defined soil-landform unit, the number and proportion of landforms and soil types will vary. Representative sites and their associated profile properties are recorded on the Victorian Resources Online website (http://vro.depi.vic.gov.au/dpi/vro/wgregn.nsf/pages/wg_soil_detailed). Importantly it should be noted that soil attributes (for example texture, sodicity, pH) are expected to vary between acquired soil sites. As the variability of soil attributes within a map unit is difficult to predict, it is important to note that representative soils should be used as a guide only. DOI 10.4226/92/58e719aeb6e7c
Victorian Soil type mapping
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A spatial map layer of soil type (Australian Soil Classification) for Victoria. The harmonised map consists of 3,300 land units (totaling about 225,000 polygons) derived from around 100 soil and land surveys carried out in Victoria over the past 70 years. The land units have been attributed according to the Australian Soil Classification (Order and Suborder levels of the classification scheme) based on their likely dominant soil type. Particular attention was given to harmonising land units across survey boundaries. A reliability index has been assigned to each land unit based on the quality and relevance of the originating survey, providing a qualitative reliability measure to support interpretation and data use. Soil site data contained in the Victorian Soil Information System (VSIS), and information on the Victorian Resources Online (VRO) website and original study reports have been combined with landscape knowledge to develop the new maps. Data from approximately 10,000 existing sites recorded, mostly recorded in the VSIS have been used. The soil type is based on land mapping conducted at different times, at variable scale, and for different purposes. Land units are therefore of variable scale and quality in relation to the soil they are representing. Many units will be comprised of multiple soil types and a range of soil properties, and local variability (e.g. at paddock scale level) can also sometimes be high. The mapping, therefore, is intended to represent the dominant, or most prevalent, broad soil type within the map unit. It is therefore adequate for regional or state-wide overviews but may not often be accurate enough for localised or within-farm assessments. For more detailed soil and land information, users are advised to refer to the original land study for any given map unit (e.g. via Victorian Resources Online website).
Vicmap Elevation - 1-5 Contours & Relief
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This dataset series is a product of Vicmap Elevation. It contains relief features represented by lines at 1 metre intervals with some areas at 5 metres intervals. Data has been derived from Melbourne Water base maps, converted to Microstation .DGN format and import into GIS. Data is incomplete ie. there are "holes" in the data where for example there are quarries, or large building sites. Datasets in the series are listed below. See their metadata entries for more detailed metadata. Metro Contour 1-5 Metre - Vicmap Elevation (EL_CONTOUR_1TO5M); Metro Ground Surface Point 1-5 Metre - Vicmap Elevation (EL_GRND_SURFACE_POINT_1TO5M);
Groundwater Management Basins (GMB)
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This layer provides boundaries for the management of groundwater in Victoria and is a product of the NWC funded Secure Allocations, Future Entitlement (SAFE) Project. The Groundwater Management Basins (GMB) layer has been derived from the Groundwater Catchments (GCs). Both the GMBs and GCs have been developed to provide complete coverage of Victoria while considering the following: (1) Reflect aquifer systems and groundwater movement; and, (2) Align with physical (i.e. surface water) and administrative boundaries where appropriate. The GCs are aligned with the GMBs. Boundaries that related directly or in-directly to the physical characteristics of groundwater resources included groundwater flow divides, surface water flow divides, topographic divides, and geological structural features that influence aquifer extent and groundwater flow direction. There are five Groundwater Management Basins (GMBs) in Victoria. Each basin encompasses a number of Groundwater Catchments (GCs): (1) Goulburn Murray Basin: includes the Loddon, Campaspe, Goulburn-Broken, Ovens and Upper Murray Groundwater Catchments; (2) Wimmera-Mallee Basin: includes the Wimmera-Mallee, West Wimmera and Avoca Groundwater Catchments; (3) Otway-Torquay Basin: includes the Glenelg, Portland and Hopkins-Corangamite and Otway Torquay Groundwater Catchments; (4) For ease of reporting: Port Phillip, Westernport and Tarwin Basins are grouped into Central Basin. Central Basin includes: West Port Phillip Bay, East Port Phillip Bay, Westernport and Tarwin Groundwater Catchments; (5) Gippsland Basin: includes East Gippsland, Central Gippsland and Seaspray Groundwater Catchments.
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