This layer is part of Vicmap Hydro and contains polygons delineating structural features relating to hydrography. Includes; Dam Batters & Spillways Also available in line/centroid layers.

Details the location and attributes of coal subcrops in Victoria. Spatial accuracy defined as attribute "Loc_Acc" Data is from the "Victorian Coal - A 2006 Inventory of Resources" Available via the online store <a href=&#09;http://dpistore.efirst.com.au&#09;>On Line store</a>

Otway Basin Top Basement Two Way Time Structure Map using sun shading. Sun angle 80, azimuth 35 and vertical exaggeration 10. Pixel colours indicate red shallow (0ms), purple deep (4813ms) This structure map highlights the Late Jurassic - Early Cretaceous structure of the Otway Basin. The grid is based on mapping done by Minerals and Petroleum Victoria, Primary Industries and Resources South Australia, Origin Energy and Cooper (1995b). The main feature to note in this image is the variation in the orientation of the Late Jurassic - Early Cretaceous troughs and highs along the length of the basin. At the western and eastern ends of the basin, the troughs and highs are oriented both NE-SW and E-W (Robe Trough, St. Clair Trough, Rivoli Trough, Lake Eliza High, Beachport High, Elingamite Trough, Gellibrand Trough, Ombersely Trough, Nerita Deep, Snail Terrace). Those in the centre are oriented NW-SE (Penola Trough, Tantanoola Trough, Kalangadoo High, Hatherleigh High, Tahara Trough, Branxholme High, Ardonachie Trough, Lake Condah High). This variation in the orientation of the Late Jurassic - Early Cretaceous troughs and highs has resulted in considerable debate over the extension direction during this period. Some worker believe it was oriented NW-SE (Willcox & Stagg, 1990; Willcox et al., 1992; O'Brien et al., 1994), whereas others believe it was NNW-SSE (Cooper, 1995a,b; Cooper & Hill, 1997), N-S (Boeuf & Doust,1975; Ellenor, 1976; Hill et al., 1994a) or NNESSW (Etheridge et al., 1985, 1987; Smith, 1988). This image was extracted from Petroleum Atlas of Victoria Figure C21 (November 2001) The entire report may be downloaded ( at no cost ) from https://gsv.vic.gov.au/searchAssistant/document.php?q=parent_id:43977

Potential Groundwater Dependent Ecosystems (GDE) are ecosystems identified within the landscape as likely to be at least partly dependent on groundwater. State-wide screening analysis was performed to identify locations of potential terrestrial GDEs, including wetland areas. The GDE mapping was developed utilising satellite remote sensing data, geological data and groundwater monitoring data in a GIS overlay model. Validation of the model through field assessment has not been performed. The method has been applied for all of Victoria and is the first step in identifying potential groundwater dependent ecosystems that may be threatened by activities such as drainage and groundwater pumping. The dataset specifically covers the Goulburn Broken Catchment Management Authority (CMA) area. The method used in this research is based upon the characteristics of a potential GDE containing area as one that: 1. Has access to groundwater. By definition a GDE must have access to groundwater. For GDE occurrences associated with wetlands and river systems the water table will be at surface with a zone of capillary extension. In the case of terrestrial GDE's (outside of wetlands and river systems), these are dependent on the interaction between depth to water table and the rooting depth of the vegetation community. 2. Has summer (dry period) use of water. Due to the physics of root water uptake, GDEs will use groundwater when other sources are no longer available; this is generally in summer for the Victorian climate. The ability to use groundwater during dry periods creates a contrasting growth pattern with surrounding landscapes where growth has ceased. 3. Has consistent growth patterns, vegetation that uses water all year round will have perennial growth patterns. 4. Has growth patterns similar to verified GDEs. The current mapping does not indicate the degree of groundwater dependence, only locations in the landscape of potential groundwater dependent ecosystems. This dataset does not directly support interpretation of the amount of dependence or the amount of groundwater used by the regions highlighted within the maps. Further analysis and more detailed field based data collection are required to support this. The core data used in the modelling is largely circa 1995 to 2005. It is expected that the methodology used will over estimate the extent of terrestrial GDEs. There will be locations that appear from EvapoTranspiration (ET) data to fulfil the definition of a GDE (as defined by the mapping model) that may not be using groundwater. Two prominent examples are: 1. Riparian zones along sections of rivers and creeks that have deep water tables where the stream feeds the groundwater system and the riparian vegetation is able to access this water flow, as well as any bank storage contained in the valley alluvials. 2. Forested regions that are accessing large unsaturated regolith water stores. The terrestrial GDE layer polygons are classified based on the expected depth to groundwater (ie shallow <5 m or deep >5 m). Additional landscape attributes are also assigned to each mappnig polygon. In 2011-2012 a species tolerance model was developed by Arthur Rylah Institute, collaborating with DPI, to model landscapes with ability to support GDEs and to provide a relative measure of sensitivity of those ecosystems to changes in groundwater availability and quality. Rev 1 of the GDE mapping incorporates species tolerance model attributes for each potential GDE polygon and attributes for interpreted depth to groundwater. Separate datasets and associated metadata records have been created for GDE species tolerance.

This dataset is a collation of data, including aquifer properties and test design, from pumping tests conducted in Victoria. This data was initially compiled as part of the Secure Allocation Future Entitlements (SAFE) project and updated in the aquifer properties project with the Department of Economic Development, Jobs, Transport and Resources.

The data contains areas of duricrust; ie regolith material indurated by a cement, or the cement only, occurring at or near the surface, or as a layer in the upper part of the regolith. The cement may be, e.g., siliceous, ferruginous, aluminous, gypseous, manganiferous, calcareous, dolomitic, salty or a combination of these. The dataset is part of the geological mapping dataset, which includes datasets representing geological rock units and boundaries, structural lines, miscellaneous lines and points, miscellaneous polygons, metamorphism, and placer deposits. The data have been collected by the Geological Survey of Victoria. Data have typically been captured in projects covering 1:100,000 mapsheets, and have typically been recorded in the field by hand at 1:25,000 then prepared for hard copy printing at 1:50,000.

Earth Resources References Lookup Table

Changes in the chemical or mineralogical composition of a rock

Land where special permission must be obtained for Geothermal Energy Operations This layer was developed for land classification for the Geothermal Energy Resurces Act 2005 This layer is derived mostly from selections from Public Land Management PLM25. Other sources of data include PLM100_V_MMT_WILDLIFE_MGMT for wildlife reserves, PLM100_V_MMT_HERITAGE_RIVER for heritage rivers, PLM100_V_MMT_NATRL_CATCHMENT for natural catchemnt area , PLM100_V_MMT_REFERENCE_AREAS for reference areas, PLM100_V_MMT_WILDERNESS_ZONE for wilderness zones and VEACREC25_POLYGON for water authority land. The dataset PLM25_GERA is an amalgamation of features defined by: Gothermal Energy Resources Act 2005 - SECT 79 Gothermal Energy Resources Act 2005 - SECT 81 Gothermal Energy Resources Act 2005 - SECT 82 and Gothermal Energy Resources Act 2005 - SECT 85 The GeoVic3 layers: Wilderness and Reference (GERA s79) Restricted Crown Land (GERA s.81) Water Authority Land (GERA s 82) and National and State Parks (GERA s. 85) are subsets from the layer PLM25_GERA PLM25_GERA has captured the following features: regional parks coastal parks, including Gippsland Lakes Reserve marine parks wildlife reserves including Wildlife Management Co-operative Areas wildlife reserves including Wildlife Management Co-operative Areas natural features and scenic reserves including caves and geological reserves bushland reserves historic areas and reserves public land water frontage reserves streamside reserves including River Murray Reserve coastal reserves national heritage parks nature conservation reserves historic and cultural features reserves alpine resorts heritage rivers natural catchment areas crown land reserves - natural feature reserves crown land reserves - nature conservation reserves crown land reserves - forest parks reference areas national parks wilderness area state parks wilderness zones marine national parks or marine sanctuaries water authority land

Entura accumulated Level 3 data over 10 year period and interpolated to 5 km grid. Values of 'Deep Blue Aerosol Optical Depth' (AOT) from the MODIS Aqua data set are used in the analysis. These values are non-dimensional, with a valid range of -0.5 to +5.0 (negative readings are not physically valid but are retained for consistency of the algorithm). Typical values are between 0 and 1, with 0.0 representing clear sky; 0.0 to 0.5 representing moderate levels of aerosols; and 0.5 to 1.0 representing relatively high aerosol concentrations (typical of heavy industrialisation).Values over 1.0 are less common and represent considerable levels of aerosols). The methodology is contained within the report prepared by Entura which is downloadable here: <a href=&#09;http://er-info.dpi.vic.gov.au/publications/documentation/geovic_3/energy_division/E300128-TR01%20Solar%20Atlas%20Victoria%20(public%20release)%20with%20calibration%20certificates.pdf&#09;>Solar Atlas Report</a> <a href=&#09;http://er-info.dpi.vic.gov.au/publications/gis/energy_division/solar_aerosol.zip&#09;>Solar Atlas - Solar Aerosol Data - esri shapefile download</a> Departmental contact: Dr. Adrian Panow Director, Energy Investment Department of Primary Industries - Victoria Ph: 9658 4140 Email: Adrian.Panow@dpi.vic.gov.au