Catchment Management Authority boundaries

This layer represents the Catchment Management Authority boundaries (derived from CALP100). It is indicative and should not be used for operational decisions about funding.\nThe Catchment Management Authorities (CMAs) were established on 1 July 1997 with the aim of creating a whole of catchment approach to natural resource management in the state. The new CMAs combined the roles of the former, River Management Boards and Catchment and Land Protection Boards, and community-based advisory groups such as salinity plan implementation groups and water quality working groups. Port Phillip has also recently become a CMA. 2014 correction on the West Gippsland and East Gippsland CMA 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. \nIt is accurate to +/- 100 metres for 80% of the time.