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  • This layer represents the Catchment Management Authority (CMA) boundaries (derived from CALP100). It is indicative and should not be used for operational decisions about funding. The CMAs were established on 1 July 1997 under the Catchment and Land Protection Act 1994 (CaLP Act) to create a whole catchment approach to natural resource management in Victoria. The CMAs combined the roles of the former, River Management Boards and CaLP Boards, and community-based advisory groups such as salinity plan implementation groups and water quality working groups. The 2014 correction was on the West Gippsland and East Gippsland CMAs border around the Gippsland Lakes. The 2021 amendment was a realignment between the Melbourne Water boundary and surrounding CMAs, following the amalgamation of Port Phillip and Westernport CMA with Melbourne Water in December 2021. These boundaries now align with the waterway district boundaries for Melbourne Water and surrounding CMAs. It is accurate to +/- 100 metres for 80% of the time.

  • THIS WAS RETIRED AND REPLACED BY SWSCA100 ON 08 SEPTEMBER 2023. 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.

  • Declared irrigation district boundaries mapped by Victorian rural water corporations. Declared irrigation districts are managed by Victorian water corporations under Part 6A of the Water Act 1989 and encompass rural water corporation irrigation infrastructure for water supply. The declared irrigation districts in the north of Victoria include the Goulburn Murray, Nyah and Tresco irrigation districts managed by Goulburn Murray Water and the Merbein, Red Cliffs, Robinvale and First Mildura irrigation districts managed by Lower Murray Water. The declared irrigation districts in the south of Victoria include the Macalister, Werribee and Bacchus Marsh irrigation districts managed by Southern Rural Water. These declared irrigation districts service the majority of irrigation enterprises in Victoria, supporting agricultural production. Input scales vary by water corporation. N.B. DITRICT_ID has been removed.