This layer is used in association with the GMA layer and represents the internal zone boundaries within each GMA (if applicable).

Areas of catchments that drain to points on main tributaries immediately upstream of Victorian estuaries. The layer was derived by Deakin University as part of the project: "Linking catchments to the sea: Understanding how human activities impact on Victorian estuaries" funded by the National Heritage Trust and the Department of Sustainability and Environment.

Boundaries defining the approximate jurisdiction of the Urban Water Corporations.

This dataset consists of 'modified' and 'unmodified' waterways for Victoria which have been attributed as 'perennial' or 'non-perennial' (i.e. ephemeral).

Irrigation district administrative boundaries mapped by Victorian water authorites based on geographic features. Input scales vary by water authority.

This layer is part of a set that defines the beneficial use of Victoria's groundwater resources. According to the Victorian Environmental Protection Authority (EPA), a beneficial use is a use to the environment, or a segment of the environment which is conductive to public benefit, welfare, safety, health or aesthetic enjoyment and which requires protection from the effects of waste discharges, emissions or deposits. A beneficial use may be an existing or potential use. A resource may have more than one beneficial use. The State's groundwater resources have a number of beneficial uses. These uses primarily depend on groundwater quality and aquifer yield and can be assigned to broad water quality classes.

Polygons showing the extent of wetlands in Victoria prior to European settlement. Includes all wetlands from Wetland_1788 and naturally occurring wetlands that were added to the updated current wetland extent (WETLAND_CURRENT). Where available original Corrick classification (primary categories based on water and salinity regimes) were retained. The polygon boundaries were derived from aerial photography interpretation. The most recent update to this database was in 2021.

This table is used by the Groundwater Resource Reporting Tool. It includes GMAs and WSPAs.

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.

This dataset contains the digitised centroids of smaller man made waterbodies (including farm dams) in northern Victoria using a combination of satellite and aerial imagery. Should be used in conjunction with FARM_DAMS. This data was updated in January 2019 to improve the usefulness of the attribute data.