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This layer provides the boundaries of the River Basins of Victoria, and is part of a system devised by the Australian Water Resources Council (AWRC). The basins within Victoria are contained within two drainage divisions; the Murray Darling Division and the South East Coast Division.

Formerly Proclaimed Water Supply Catchments. Domestic Water Supply Catchments as proclaimed under the Soil Conservation and Land Utilization Act, 1958 in conjunction with the Land Conservation Act, 1970. This layer identifies domestic Water Supply Catchments that are subject to a Land Use Determination or a Land Use Notice.

Based on PWSC100 Layer from 1 JAN 1992. Edited NOV 2021 to include updated declaration boundaries. Name Changed to SWSCA100 to reflect Legislation terminology and updates. Restricted release 1 JAN 2022. Full release 02DEC2022 - with edits to update Water corporation names and CMA names. Sliver polygons removed where impacting on naming.

Groundwater Flow Systems (GFS) have been developed in the National Land and Water Resources Audit as a framework for dryland salinity management in Australia. Originally developed in a broad national context, GFS has since been applied at the Murray Darling Basin scale and consequently CMA scale to support and underpin the development of salinity management strategies across regional jurisdictions. GFS1M joins and aggregates the mapping for the Victorian CMAs where a GFS framework exists, and presents a statewide map with a consistent attribute framework. Of the order of 100 regional GFSs is condensed into 25 statewide GFSs. GMS1M is designed for broad statewide policy use only. The GFS framework encompasses: (a) identification of generalised conceptual models of groundwater behaviour in each of the region's geological and geomorphic provinces, (b) an assessment of the physical attributes of each system, and (c) first order consideration of potential salinity management strategies applicable within each GFS. A GFS will exhibit similar physical characteristics across its extent, and generally incorporate the complete groundwater flow path from recharge to discharge. Central to the framework is the assessment of the hydrogeological responsiveness of a GFS that guides appropriate land use to assist in the management of salinity. The development GFS framework for a region is typically undertaken through intense workshopping involving local expertise, then this documented in a regional GFS map and accompanying report. The consolidation of regional GFSs into GFS1M was undertaken by PIRVic and funded through NAP.

Water Frontages are a subset of the VMPROP.V_PARCEL_MP_CROWN_APPROVED dataset. From the LIMS database, water frontage licences were selected and the associated parcels were selected on the SPI number or the P Number. The parcels selected were compared to the list of streams reserved under the 1881 reservation of water frontages for public purposes. A majority of streams were identified. Some stream beds and banks have not yet been parcelised, so any unidentified parcels were selected which aligned with the hydrology layer and had an irregular shape and were added to the layer. The VicMap hydrology layer was used to label water frontages.

This layer contains the line and polygon features depicting the outline of Victoria and major waterbodies at 1:500,000. The linework was derived from the VICMAP 1983 Digital map of Victoria.

Modelled likelihood of occurrence of seasonal herbaceous wetlands in south-east Australia using field observations and a suite of temporally informed statistics for indices derived from the Landsat and ALOS satellite platforms. Model outputs include both likelihood and uncertainty surfaces. The likelihood surface depicts the mean likelihood (of 30 independent models) of seasonal herbaceous wetland occurrence at each 25 x 25 m pixel and the uncertainty surface is the standard deviation derived from the set of 30 likelihood of occurrence predictions at each pixel.

This layer is part of Vicmap Lite and contains line features delineating hydrological features. Vicmap Lite datasets are suited for use between scales of 1: 250,000 and 1 : 5 million. The linework was sourced from Vicmap Hydro. The level of attribute information, the number of features and the number of vertices has been simplified to suit the 1: 250,000 - 1 : 5 million scale range. The concept of a Scale Use Code has been introduced to help control the level of detail displayed. If this dataset is used in conjunction with vmlite_hy_water_area, then the draw order should be such that vmlite_hy_watercourse is drawn 1st and vmlite_hy_water_area is drawn ontop. THIS DATASET WAS LAST UPDATED IN NOVEMBER 2015

Locations of barriers to fish migration for Victoria. This will prove a useful dataset when looking at migration of native fish populations in Victorias rivers and streams, as it will enable the CMSA staff to identify potential obstacles which may interrupt the natural migration of fish through the stream system so that they can make informed judgements on whether the construction of fish ladders are necessary, and will be easy to update when barriers are removed, dams added or fish ladders constructed to overcome these obstacles This information is currently stored in Access and Excel