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| Port Phillip and Westernport CMA | |
|---|---|
| Name | Port Phillip and Westernport Catchment Management Authority |
| Formation | 1997 |
| Type | Statutory authority |
| Headquarters | Melbourne |
| Region served | Port Phillip and Westernport region, Victoria, Australia |
| Leader title | CEO |
| Parent organization | Victorian Department of Environment, Land, Water and Planning |
Port Phillip and Westernport CMA The Port Phillip and Westernport Catchment Management Authority operates across the Port Phillip Bay and Western Port coastal systems, coordinating catchment planning, restoration, and waterway management for the southern Victorian landscape. It sits within the statutory framework of Victoria's natural resource institutions and works with municipal, state and federal entities to deliver integrated projects across urban, agricultural and coastal settings. The authority interfaces with research bodies, indigenous organizations, conservation NGOs and industry groups to translate policy into on-ground actions.
The CMA framework was established under Victoria's catchment legislation to align with agencies such as the Victorian Department of Environment, Land, Water and Planning, the Environment Protection Authority Victoria, and the Corangamite Catchment Management Authority. Its remit covers the management of riverine systems linked to Yarra River, Maribyrnong River, Werribee River, and coastal embayments including Port Phillip Bay and Western Port Bay. The authority collaborates with regional councils like the City of Melbourne, Mornington Peninsula Shire, Greater Geelong City Council, and Bayside City Council, and partners with research institutions such as University of Melbourne, Monash University, Deakin University, and the CSIRO. It also engages Traditional Owner groups including the Boonwurrung and Wurundjeri peoples.
The catchment spans urban and rural landscapes from the Great Dividing Range foothills through the Western District plains to the coastal environments of Port Phillip Bay and Western Port Bay. Major tributaries include the Yarra River, Maribyrnong River, Werribee River, Merri Creek, and Dandenong Creek. Coastal and wetland assets feature Edithvale-Seaford Wetlands, Jawbone Flora and Fauna Reserve, Rye Wetlands, Churchill Island, and Bunurong Marine National Park. The region encompasses habitat for species listed under Commonwealth and state protections such as the Australasian bittern, Little penguin (Eudyptula minor), Eastern Barred Bandicoot, Growling Grass Frog, and migratory shorebirds protected by the JAMBA and CAMBA agreements. Geomorphology includes estuarine deltas, tidal mudflats, coastal dune systems, and remnant native grasslands like those near Chewton and Sunbury.
Governance structures integrate statutory boards, executive leadership, and advisory committees interfacing with the Victorian Auditor‑General's Office, Victorian Electoral Commission reporting cycles, and funding streams from the Australian Government environmental programs. The CMA develops regional catchment strategies consistent with the Biodiversity 2037 framework and the Water Act 1989 (Victoria), coordinating with agencies such as Parks Victoria, the Catchment Management Authorities (Victoria), and the Victorian Environmental Water Holder. Management activities include riparian rehabilitation, salinity mitigation programs, and integrated pest plant and animal control aligned with strategies like the Invasive Species Council priorities. It also partners with industry bodies including Victorian Farmers Federation, Farmers Federation of Australia, and local business groups.
Programs target threatened species recovery plans for taxa recognized by the Environment Protection and Biodiversity Conservation Act 1999 and Victoria's Flora and Fauna Guarantee Act listings. Recovery actions have included habitat restoration for the Growling Grass Frog and Orange-bellied Parrot migratory corridors, wetland reconstruction at Cheetham Wetlands, and seagrass planting initiatives for Zostera beds within Port Phillip Bay (Western Shoreline) and Bellarine Peninsula Ramsar Site contexts. Collaborative restoration projects involve BirdLife Australia, Australian Conservation Foundation, Trust for Nature (Victoria), and local Landcare networks such as Landcare Australia. Cultural heritage co-management occurs with Aboriginal corporations and Registered Aboriginal Parties including Boonwurrung Land and Sea Council.
Water quality programs monitor nutrients, turbidity, and contaminants across tributaries feeding into Port Phillip Bay and Western Port Bay, using frameworks from the National Pollutant Inventory and standards referenced by the Environment Protection Authority Victoria. Monitoring networks engage laboratories at CSIRO Land and Water, the Arthur Rylah Institute for Environmental Research, and university partners for long-term datasets including seagrass extent, algal bloom incidence, and stormwater pollutant loads. Technical initiatives include integrated modelling with inputs aligned to the Goulburn Broken Catchment datasets, citizen science through groups such as Reef Watch and Merri Creek Management Committee, and implementation of best management practices promoted by the Healthy Waterways Strategy.
Community engagement leverages volunteer programs, riparian fencing, revegetation days, and education partnerships with schools and tertiary institutions including RMIT University and La Trobe University. The CMA coordinates with networks like Landcare, Friends of the Earth (Melbourne), Friends of Merri Creek, and indigenous-led education through Koorie Heritage Trust. Public outreach uses platforms such as municipal sustainability programs run by the City of Port Phillip and event partnerships with festivals at sites like St Kilda and Sorrento. Programs also align with national initiatives such as National Landcare Program funding rounds.
Major challenges include urban stormwater runoff from the Melbourne metropolitan area, agricultural diffuse nutrient loads from the Western District, coastal development pressures around the Mornington Peninsula, climate-change driven sea-level rise impacting Edithvale-Seaford Wetlands, invasive species such as European rabbit, Feral cat, and plant invaders like Gorse (Ulex europaeus), and altered flow regimes from water infrastructure linked to the Murray–Darling Basin discussions. Balancing port and shipping activities at Port of Melbourne and Hastings Port with habitat protection, and reconciling recreational use at sites like Brighton Beach and Sorrento Front Beach remain ongoing governance tasks.
Category:Catchment management authorities in Victoria