Abstract

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.

This dataset represents Victoria's Groundwater Management Areas (GMAs).

Where groundwater has been intensively developed in Victoria, or has the potential to be developed, Groundwater Management Areas (GMAs) are established and the Permissible Consumptive Volume (PCV) is progressively set. Monitoring of the groundwater resource in these areas is undertaken by the Department of Sustainability and Environment through the State Groundwater Monitoring Network. Water levels and the amount of water allocated to groundwater users in the areas are closely monitored.

Dataset History

This dataset has been derived by DEPI's Groundwater and Licensing Branch (GLiB) and the Rural Water Corporations.

Dataset Citation

Victorian Department of Environment and Primary Industries (2014) Victorian Groundwater Management Areas. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/df25175d-0dff-43e7-ada5-4c0ec0569e88.

This dataset representst Victoria’s Groundwater Management Areas (GMAs)

Where groundwater has been intensively developed in Victoria, or has the potential to be developed, Groundwater Management Areas (GMAs) are established and the Permissible Consumptive Volume (PCV) is progressively set. Monitoring of the groundwater resource in these areas is undertaken by the Department of Sustainability and Environment through the State Groundwater Monitoring Network. Water levels and the amount of water allocated to groundwater users in the areas are closely monitored.

This dataset presents the footprint of Victoria's Groundwater Management Areas (GMAs). Where groundwater has been intensively developed in Victoria, or has the potential to be developed, GMAs are …Show full descriptionThis dataset presents the footprint of Victoria's Groundwater Management Areas (GMAs). Where groundwater has been intensively developed in Victoria, or has the potential to be developed, GMAs are established and the Permissible Consumptive Volume (PCV) is progressively set. Monitoring of the groundwater resource in these areas is undertaken by the Department of Environment, Land, Water and Planning (DELWP) through the State Groundwater Monitoring Network. Water levels and the amount of water allocated to groundwater users in the areas are closely monitored. For more information, please visit: Victorian Government Data Portal. Metadata Statement. Copyright attribution: Government of Victoria - Department of Environment, Land, Water and Planning, (2019): ; accessed from AURIN on 12/3/2020. Licence type: Creative Commons Attribution 4.0 International (CC BY 4.0)

Abstract

This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied.

A more recent extract of the GMS is now available (Oct 2013).

In addition to monitoring data gathered via the State Observation Bore Network, groundwater information is held in relation to approximately 200,000 boreholes throughout Victoria on the Groundwater Management System (GMS). Part 1 in the title refers to the Access database version. This data is also available in csv and xls files. These have not been included.

The GMS contains data from a wide variety of sources including the former Rural Water Corporation, the Minerals and Energy Department (now part of the Department of Primary Industries), other Government Departments, industry and the community.

The GMS extract has been imported into MS Access database. There are 29 individual tables within the database. For the purpose of IPBA, the most useful tables are "gms_chemistry" tables 2 to 9, and gms_wl_all which contains all of the water level readings. Other relevant information is stored in the National Groundwater Information System.

Dataset History

Up until the mid 1980s the bore locations were plotted on mapsheets and the individual bore records kept in hardcopy. From the mid 1980s onwards a digital database, compiled from the existing records of all Government bores and private bores, was progressively assembled on mainframe computers. From 1969, a permit to drill groundwater bores was required, and the information captured by the licensing process was added to the database. This included groundwater investigation or observation bores drilled by other government agencies such as the State Rivers and Water Supply Commission (SRWSC) and the Soil Conservation Authority (SCA) and subsequent equivalents, although these agencies also kept their own bore databases.

Following the split of the groundwater group from the GSV in mid 1988, the State bore database was duplicated. One copy was merged with several Rural Water Corporation (RWC) databases to become the Victorian Groundwater Data Base (VGDB), the precursor to the current Groundwater Management System (GMS) run by the Department of Sustainability and Environment (DSE). The other copy remained with the GSV and was developed into the Geological Exploration and Development Information System (GEDIS), which included the mineral exploration bores. Data exchange was attempted for a few years following the split, but ultimately the databases grew into quite separate entities. The current GEDIS database is not included in this data.

Dataset Citation

Victorian Department of Environment and Primary Industries (2013) Victorian Groundwater Management System Dec 2012 (superseded). Bioregional Assessment Source Dataset. Viewed 31 May 2018, http://data.bioregionalassessments.gov.au/dataset/0e144947-4b0c-4c31-b605-9ecabdf2730b.

The layer provides source data for groundwater to the Victorian Water Resources Data Warehouse which was closed down November 2013. This was recently replaced by WMIS: http://data.water.vic.gov.au/monitoring.htm

The latest update (Oct 2013) for this dataset is from the GMS (as all previous datasets have been). Next update will be from WMIS.

This layer provides the boundaries of the Groundwater Catchments of Victoria and is a product of the NWC funded Secure Allocations, Future Entitlement (SAFE) Project. The Groundwater Catchments (GC) 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 within Victoria’s Groundwater Basins (GB). 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.

Administrative boundaries directly linked to the management of groundwater resources include:

The Victorian State Boundary (Water Act (1989);

WSPA: Water Supply Protection Area (formally declared under provisions of the Act);

GMA: Groundwater Management Area (described and lodged as a plan with the Central Plan Office);

RWC: Rural Water Corporation administration areas - Grampians Wimmera Mallee Water (GWMWater), Goulburn Murray Water (GMW), Lower Murray Water (LMW) and Southern Rural Water (SRW); and

MDBA: Murray Darling Basin Authority (Federal Water Act (2007)).

The description of water resource management is often described in terms of surface water and groundwater. In reality, the two resources are connected; however there are differing degrees of interconnection depending on the groundwater system and location within the surface water catchment. In preparing the Groundwater Catchments (GC), surface water catchments were directly considered. The key surface water boundaries considered are:

Victorian Sustainable Diversion Limits (SDL) Catchment boundaries;
Bureau of Meteorology (2011) Surface Water Basins (Australian Hydrological Geospatial Framework, product suite v2 2011);
Victorian Surface Water Basin Catchment (Australia’s River Basin, 1997); and,
Geoscience Australia (500 sqkm) National Nested Catchment.

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.

Thickness of Quaternary Aquifer - QA - 100 -

The thickness of the aquifer is determined by subtracting the depth of the base layer from the depth of the surface layer. As the geological components vary within and between aquifers, this is not an indication of volume or yield.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Lower Tertiary Aquifer - LTA - 111

The depth to the aquifer layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Upper Tertiary / Quaternary Basalt - UTB - 101:

The depth to the aquifer layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Upper-Mid Tertiary Aquifer - UMTA - 107 -

The depth to the aquifer layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Abstract

This dataset and its metadata statement were derived by the Bioregional Assessment Programme from boundary data supplied by the Victorian DEPI groundwater branch. The parent datasets are identified in the Lineage field in this metadata statement. The processes undertaken to produce this derived dataset are described in the History field in this metadata statement.

This subset geodatabase contains a collection of Water Supply Protection Area and Groundwater Management Area boundaries in the Gippsland region.

It is an update of an earlier version "GMA and WSPA boundaries in Gippsland - geodatabase" by the addition of a couple more GMA polygons.

Where groundwater has been intensively developed in Victoria, or has the potential to be developed, Groundwater Management Areas (GMAs) are established and the Permissible Consumptive Volume (PCV) is progressively set. Monitoring of the groundwater resource in these areas is undertaken by the Department of Sustainability and Environment (now DELWP, ed) through the State Groundwater Monitoring Network. Water levels and the amount of water allocated to groundwater users in the areas are closely monitored.

Surface Water - This dataset displays Victoria's surface-water Water Supply Protection Areas (WSPAs), and has been prepared for the Groundwater and Licensing Branch and the River Health Branch DSE, by LICS (Land Information Cartographic Services) and Melbourne Water.

As part of the 2002 amendments to the Water Act 1989, surface-water was included to allow WSPAs to be declared for the protection of surface-water resources in a defined area. A legally enforceable Streamflow Management Plan is then developed. The aim of the plan is to manage the surface water resources of the WSPA equitably and to ensure the long-term sustainability of the resource. An extensive consultative process guarantees that surface water users have a major input into the development of the Streamflow Management Plan for their area. A Ministerial appointed Consultative Committee which represents all relevant interests prepares the Plan. In an area where farming predominates, farmers who own or occupy farming land in the area must comprise at least half of the membership of the committee.

Groundwater - This dataset displays Victoria's groundwater Water Supply Protection Areas (WSPAs), and was originally prepared for Groundwater and Licensing Branch DSE, by LICS (Land Information Cartographic Services). Boundaries generaterd by LICS and Melbourne Water. Subsequent revisions have been undertaken by GLiB and the Rural Water Corporations.

Purpose

WSPAs are areas that have been (or are proposed to be) proclaimed under the Water Act 1989 for the purpose of establishing a management plan. The aim of the plan is to manage the groundwater resources of the WSPA equitably and to ensure the long-term sustainability of the resource. An extensive consultative process guarantees that groundwater users have a major input into the development of the Groundwater Management Plan for their area. A Ministerial appointed Consultative Committee, which represents all relevant interests, prepares the Plan. In an area where farming predominates, farmers who own or occupy farming land in the area must comprise at least half of the membership of the committee. GMA- This data has been derived by DEPI's Groundwater and Licensing Branch (GLiB) and the Rural Water Corporations.

WSPA -Boundaries generated by LICS and Melbourne Water. Subsequent revisions have been undertaken by the Groundwater and Licensing Branch (GLiB) and the Rural Water Corporations.

Dataset History

GMA- This data has been supplied by DEPI's Groundwater and Licensing Branch (GLiB) and the Rural Water Corporations.

WSPA -Boundaries generated by LICS and Melbourne Water. Subsequent revisions have been undertaken by the Groundwater and Licensing Branch (GLiB) and the Rural Water Corporations.

The polygons within this dataset were selected from the larger statewide sets (named above and in the Lineage) based on their spatial location within the Gippsland project boundary (GUID 27413de5-d13a-4231-ac79-fc77f4cbb5f7). Process involved ArcGIS Select by location tool. The selected subsets were merged into one file.

Dataset Citation

Bioregional Assessment Programme (2016) GMA and WSPA boundaries in Gippsland - geodatabase v2. Bioregional Assessment Derived Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/bfb32a2e-bf93-4c6a-a361-1817e85ddba9.

Dataset Ancestors

• Derived From Victorian Water Supply Protection Areas

• Derived From Victorian Groundwater Management Areas

Abstract This dataset was supplied to the Bioregional Assessment Programme by a third party and is presented here as originally supplied. Metadata was not provided and has been compiled by the Bioregional Assessment Programme based on known details at the time of acquisition. The layer provides source data for groundwater to the Victorian Water Resources Data Warehouse which was closed down November 2013. It contains selected extraction wells attributed to the specific model layers used in the Gippsland regional Groundwater Model. This was recently replaced by WMIS: http://data.water.vic.gov.au/monitoring.htm The latest update (Oct 2013) for this dataset is from the GMS (as all previous datasets have been). Next update will be from WMIS. ## Dataset History This dataset was not accompanied by any description of how it was developed. It is assumed that it is a selection of bore locations extracted from the WMIS which have been attributed with other data relating to model layers, extraction rates and aquifer details. Please refer to the Principal investigator Craig Beverly for details (Gippsland Groundwater model, Beverly et al 2015) The following description is provided by www.vvg.org.au. The WMIS is the statewide repository of groundwater bore information managed by the Department of Environment, Land, Water and Planning (DELWP) for the State Government Victoria. The data in the WMIS was migrated from the former Groundwater Management System (GMS) in 2013 and the current database holds groundwater information on approximately 220,000 boreholes throughout Victoria. The WMIS is also accessible directly through the DELWP groundwater portal. ## Dataset Citation Victorian Department of Economic Development, Jobs, Transport and Resources (2016) Extraction bores v1 Geodatabase. Bioregional Assessment Source Dataset. Viewed 05 October 2018, http://data.bioregionalassessments.gov.au/dataset/cca7757e-f108-4d09-ac5f-6ac6d30955b9.

Cretaceous and Permian Sediments - CPS - 113

The depth to the Cretaceous and Permian sediment layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Surface Water - This dataset displays Victoria's surface-water Water Supply Protection Areas (WSPAs), and has been prepared for the Groundwater and Licensing Branch and the River Health Branch DSE, by LICS (Land Information Cartographic Services) and Melbourne Water.

As part of the 2002 amendments to the Water Act 1989, surface-water was included to allow WSPAs to be declared for the protection of surface-water resources in a defined area. A legally enforceable Streamflow Management Plan is then developed. The aim of the plan is to manage the surface water resources of the WSPA equitably and to ensure the long-term sustainability of the resource. An extensive consultative process guarantees that surface water users have a major input into the development of the Streamflow Management Plan for their area. A Ministerial appointed Consultative Committee which represents all relevant interests prepares the Plan. In an area where farming predominates, farmers who own or occupy farming land in the area must comprise at least half of the membership of the committee.

Groundwater - This dataset displays Victoria's groundwater Water Supply Protection Areas (WSPAs), and was originally prepared for Groundwater and Licensing Branch DSE, by LICS (Land Information Cartographic Services). Boundaries generaterd by LICS and Melbourne Water. Subsequent revisions have been undertaken by GLiB and the Rural Water Corporations.

WSPAs are areas that have been (or are proposed to be) proclaimed under the Water Act 1989 for the purpose of establishing a management plan. The aim of the plan is to manage the groundwater resources of the WSPA equitably and to ensure the long-term sustainability of the resource. An extensive consultative process guarantees that groundwater users have a major input into the development of the Groundwater Management Plan for their area. A Ministerial appointed Consultative Committee, which represents all relevant interests, prepares the Plan. In an area where farming predominates, farmers who own or occupy farming land in the area must comprise at least half of the membership of the committee.

Abstract

The dataset was derived by the Bioregional Assessment Programme. This dataset was derived from multiple datasets. You can find a link to the parent datasets in the Lineage Field in this metadata statement. The History Field in this metadata statement describes how this dataset was derived.

It includes data from a Victorian extract from the National Groundwater Information System to obtain locations of Bores and is joined by licence to an extract

of Regulations Category 6 supplied by Department of Environment and Planning, Victoria via Bureau of Meteorology. These bore locations have then been overlaid with Water Supply Protection Areas and Groundwater Management Areas to group them into Assets and the data has then been clipped to the Gippsland PAE.

Dataset History

It is created from a Victorian extract from the National Groundwater Information System to obtain locations of Bores and is joined by licence to an extract

of Regulations Category 6 supplied by Department of Environment and Planning, Victoria via Bureau of Meteorology.

These bore locations have then been overlaid with Water Supply Protection Areas and Groundwater Management Areas to group them into Assets and the data has then been clipped to

the Gippsland PAE.

Note: Where there were two overlapping Groundwater management polygons the bores were matched by depth to the Groundwater management polygon that had an attribute range that reflected the bore depth.

Bores that did not fit the depth of Groundwater management polygon or were not within a Groundwater management polygon were assigned a value of 'Unincorporated'

Dataset Citation

Bioregional Assessment Programme (2014) Groundwater Economic Elements Gippsland 20141120. Bioregional Assessment Derived Dataset. Viewed 07 February 2017, http://data.bioregionalassessments.gov.au/dataset/cba157d1-7be9-451a-9e41-570da5c3643d.

Dataset Ancestors

• Derived From Gippsland Project boundary

• Derived From Gippsland Basin bioregion Preliminary Assessment Extent (PAE)

• Derived From Victoria - Seamless Geology 2014

• Derived From Groundwater Licences Entitlement Volume To Bores Vic DEPI 20141021

• Derived From Victorian Water Supply Protection Areas

• Derived From National Groundwater Information System Victorian Extract (2014-03-21)

• Derived From GEODATA TOPO 250K Series 3

• Derived From Ground Water Managment Area Victoria DEPI 201402

• Derived From National Groundwater Information System (NGIS) v1.1

Cretaceous and Palaeozoic Bedrock (basement) - BSE - 114 -

The depth to the aquifer layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Abstract This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied. DEPI originally engaged GHD to develop seamless 3D aquifer surfaces for the Victorian Aquifer Framework (VAF). The seamless mapping of aquifers across the state provides the fundamental framework for groundwater resource management, underpins development of a revised management structure for Victoria (the Secure Allocation Future …Show full descriptionAbstract This dataset and its metadata statement were supplied to the Bioregional Assessment Programme by a third party and are presented here as originally supplied. DEPI originally engaged GHD to develop seamless 3D aquifer surfaces for the Victorian Aquifer Framework (VAF). The seamless mapping of aquifers across the state provides the fundamental framework for groundwater resource management, underpins development of a revised management structure for Victoria (the Secure Allocation Future Entitlement project funded by the National Water Commission) and contributes to the data needs of the Bureau of Meteorology National Groundwater Information System (NGIS). The original dataset was produced by GHD in 2012 using (in part) data provided by Southern Rural Water Corporation and Goulburn-Murray Water Corporation. It has been subsequently amended by Hocking et al and SKM in 2013. Dataset History A number of key input datasets were sourced as part of the process to derive the 3D aquifer surfaces. These datasets included: The DEPI State-wide Stratigraphic Database (SSD); The National Groundwater Information System (NGIS) database containing groundwater borehole location information as well as lithological and stratigraphic information; Raster layers previously produced for Southern Rural Water (SRW) by SKM and GHD in 2009; The crystalline basement surface provided by the former Department of Primary Industries (DPI); Outcrop 1:250,000 scale geological mapping compiled by the former Geological Survey of Victoria, DPI; A state-wide 100m Digital Elevation Model (DEM) based on the DEPI 20m DEM. This was used to represent the natural surface; Data generated using DEPI's state-wide ecoMarkets groundwater modelling package to assist with the definition of key layers of the major Cainozoic aquifers; Latrobe Valley Coal Model which was used to provide a framework for the hydro-stratigraphy of the wet Gippsland Basin; Rasters of the top elevation of the major aquifer systems covering the Kiewa, Ovens, Goulburn-Broken and Loddon and Campaspe catchments; Data extracted from the Basin in a Box, the Murray Basin Hydrological Map Series and the Murray-Darling Basin Groundwater Status 1990-2000: Summary Report; Airborne magnetic data publicly available from raster data published by the former Geological Survey of Victoria, DPI. Once the input data had been compiled, the VAF 3D surfaces were developed by lfollowing a number of key steps, summarised below: (1) Contours as polylines and aquifer extents as polygons were extracted from previous mapping surfaces; (2) Outcrop points attributed with values from the DEM were created; (3) Based on the state-wide stratigraphic database, the contours and extents were refined or created; (4) A top elevation raster was interpolated using contours, outcrop points and bore data then replacing outcrop areas with the DEM; (5) The aquifer thickness was then checked in GIS by comparing layers against each other and assessing for cross-overs and negative thickness; (6) The input data was then revised and bore data, contours, and aquifer extents modified as required due to errors in the thickness; (7) If there were subsequent issues identified such as overlaps between aquifers, mismatches between bores and resulting layers, then the process was revised by returning to Step (3); (8) If the layers were matching well, then extent points were created to smooth layers at the edges; (9) A top elevation raster was generated again using contours, outcrop points, extent points and bore data; (10) The aquifer thickness was checked again, and if significant issues were identified, then the process returned back to Step (3) for further iteration; (11) Further modifications were applied to remove negative thicknesses and to provide minimum thickness of overburden; (12) Top and bottom elevation rasters were then generated at 100m pixel resolution to form the final dataset. In generating each of the layers, a number of Quality Assurance (QA) measures were implemented at various stages of the process. These included a topologic review, a hydrogeological review and an external reveiw by Spatial Vision. The original dataset was published in May 2012 and subsequent revisions have been conducted by Hocking et al and SKM in 2013. Dataset Citation Victorian Department of Environment and Primary Industries (2014) Victorian Aquifer Framework - Water Table. Bioregional Assessment Source Dataset. Viewed 11 July 2016, http://data.bioregionalassessments.gov.au/dataset/663871a0-0444-4be4-bd2b-6741e114036e.

Upper Tertiary Aquifer (fluvial) - UTAF - 105 -

The depth to the aquifer layer (metres) is subtracted from the current ground surface.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.

Thickness of Cretaceous and Permian Sediments - CPS - 113 -

The thickness of the aquifer is determined by subtracting the depth of the base layer from the depth of the surface layer. As the geological components vary within and between aquifers, this is not an indication of volume or yield.

The Victorian Aquifer Framework (VAF) was developed by the Department of Sustainability and Environment (DSE, now DELWP) to provide a consistent approach to defining, naming and numbering the commonly accepted aquifers, aquitards and geological layers that make up Victoria's groundwater systems. It is intended to assist in the sustainable management of groundwater resources in Victoria and provide the framework for mapping aquifers and aquitards across the State.

The 3D numeric surfaces (grids) of each layer have been styled and converted to GeoTIFF by the VVG project to optimise them for display and querying on the web.