Winterfill sustainable diversion limit volumes (SDLs) have been developed across Victoria and represent the upper limit on winterfill diversions, beyond which there is an unacceptable risk that additional extractions may degrade the environment. The SDL_BASIN dataset is a spatial representation of river basins, which represent an aggregate of the intermediate SDL catchments. These basins DO NOT reflect the Victorian surface water river basins as defined by the Australian Water Resources Council. Winterfill SDL data is held in the SDL_DATA layer.

This layer contains the location of surface water monitoring sites in the Water Measurement Information System (WMIS). WMIS is the primary access point to search, discover, access and download surface water and surface monitoring data collected by DEPI and its partners. More detailed information on individual surface monitoring sites , can be accessed via the WMIS site at http://data.water.vic.gov.au/monitoring.htm.

This dataset is a subset of the Victorian Groundwater Data Inventory, developed by DELWP. The Data Inventory collated available data relating to four themes: groundwater recharge, aquifer/aquitard properties, groundwater use and aquifer/aquitard thickness. Information has been sourced from 65 hydrogeological studies and contains a spatially enabled representation of data coverage. This dataset represent the Recharge component of the Data Inventory. A total of 35 groundwater recharge data sources were identified for Victoria and 31 were successfully sourced and added to the database.

Hydrographs from over 2000 state observation bores were reviewed in order to group bores which have a similar water level trend and are screened in the same aquifer. The groupings of observation bores are referred to as 'suites' and are classified according to the Upper, Middle, Lower and Basement aquifers aligning with the Victorian Aquifer Framework. By applying a statistical technical, a normalised hydrograph was developed for each suite using the observed water levels from all bores within the suite. This hydrograph is representative of the groundwater trend within the suite. A spatial boundary has been created for each suite which encompasses all bores within the suite. The boundaries were manually constructed and cover the extent of the mapped aquifers.

The Water Act, 1989, requires that anoyone wishing to extract groundwater must apply for a groundwater licence. Groundwater licences are issued to protect the rights of licence holders, ensure that water is shared amongst users and to ensure that environmental requirements are protected. This dataset is derived from the Victorian Water Register.

This layer represents the stream segments opened to fish movement by the removal of barriers. At this stage the layer only shows passages in the Glenelg-Hopkins and West Gippsland CMA's.

This layer contains the yearly Natural Resource Management standard outputs reported by CMAs. The raw submissions have gone through a statewide consolidation process which QAs selected common attributes.

This table will hold polygons depicting indicative extents of the area of the hydro feature. Each of these features has some type of non specific but best derived boundary. These geographic hydro areas depict features such as bays, beach, bend, entrance, inlet, passage, reach and seas. The polygons contain intelligent information including name, feature type and a Scale Use Code to enable labelling which is both multi scale and non scale dependent.

Boundaries defining the approximate jurisdiction of the Urban Water Corporations. This data was loaded in June 2018, it has never been updated by the water group.

The ISC1999_SCORES dataset represents the 1999 Index of Stream Condition (ISC) overall score and subindex scores for each ISC river reach in the state of Victoria. The first ISC assessment in 1999 provided a snapshot of river health for major rivers and streams in Victoria. The 1999 ISC provides scores for five components of stream condition: (i) hydrology (based on a measure of the gross change between natural and existing monthly flows, catchment permeability and the presence of hydroelectric power stations); (ii) physical form (based on bed and bank stability, influence of artificial barriers, and instream physical habitat); (iii) streamside zone (based on types of plants; spatial extent, width, and intactness of riparian vegetation; and condition of wetlands and billabongs); (iv) water quality (based on an assessment of phosphorus, turbidity, electrical conductivity and pH); and (v) aquatic life (based on number of families of macroinvertebrates). Further information available at: https://www.water.vic.gov.au/waterways-and-catchments/rivers-estuaries-and-waterways/monitoring