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| Basin Salinity Management Strategy | |
|---|---|
| Name | Basin Salinity Management Strategy |
| Type | Environmental management plan |
| Region | Murray–Darling Basin |
| Established | 1995 |
| Objective | Reduce salinity impacts on rivers, wetlands, agriculture and communities |
Basin Salinity Management Strategy The Basin Salinity Management Strategy is a coordinated program to manage salinity across the Murray–Darling Basin, addressing salt mobilization, water quality and land productivity through engineering, policy and regional programs. It integrates science from hydrology, soil science and ecology with policy instruments and stakeholder engagement across jurisdictions such as the Australian Government, state agencies and local councils. The Strategy aligns with existing frameworks including the Murray–Darling Basin Agreement, and interfaces with national initiatives and international examples of basin management.
The Strategy emerged from concerns documented after studies by the Commonwealth Scientific and Industrial Research Organisation and reports by the Murray–Darling Basin Commission and later the Murray–Darling Basin Authority, following droughts and salinity crises in the Murray River and Murrumbidgee River. Primary objectives include protecting water supply for urban centres like Adelaide, preserving productive land in regions such as the Riverina and Goulburn Valley, and conserving wetlands listed under the Ramsar Convention like the Coorong. Complementary goals reference international frameworks such as the UN Convention to Combat Desertification and national instruments including the Water Act 2007.
Salinity sources are identified as mobilisation of salt from ancient marine deposits in the Great Dividing Range and Plains, secondary salinisation from irrigation in catchments like the Shepparton Irrigation Region, and saline groundwater discharge into rivers such as the Darling River. Hydrological processes involve streamflow regulation by structures including the Hume Dam and Menindee Lakes, interaction with floodplain wetlands like the Barmah-Millewa Forest, and climate drivers such as the El Niño–Southern Oscillation and trends noted in reports by the Bureau of Meteorology. Salt load modelling often references work by researchers affiliated with the University of Adelaide, CSIRO and the Australian National University.
Monitoring employs river salinity gauges on reaches of the Murray River, water quality networks run by state agencies such as the New South Wales Department of Planning and Environment and the Victorian Department of Environment, Land, Water and Planning, and groundwater observation wells in the Mallee and Loddon regions. Data management systems integrate telemetry, datasets curated by the Bureau of Meteorology and modelling platforms developed by CSRIO partners and university groups; outputs feed into decision support used by the Murray–Darling Basin Authority and local water authorities like SA Water. Historical records include salinity indices and salt load time series used in adaptive management and audit processes overseen by tribunals and commissions.
Measures combine operational rules for storages such as Lake Hume and diversion structures at places like Swan Hill, with on-ground engineering including salt interception schemes, re-use infrastructure near Mildura, and drainage management in the Goulburn and Shepparton districts. Remediation projects reference construction approaches used in the Upper Goulburn and remediation trials supported by the Australian National University and CSIRO. Complementary non-structural measures include irrigation efficiency programs implemented by regional bodies such as the Goulburn–Murray Water and incentive schemes administered through state departments.
Salinity affects aquatic ecosystems including native fish species like the Murray cod and wetland habitats such as the Nimmie Caira area, threatening biodiversity values identified under the Environment Protection and Biodiversity Conservation Act 1999 and Ramsar listings at sites like the Gunbower Forest. Agricultural impacts are evident in cropping zones of the Riverina and grazing lands in the Lower Darling, reducing yields for commodities grown under licencing regimes and managed by agencies such as the Australian Bureau of Agricultural and Resource Economics. Socioeconomic consequences influence regional towns including Renmark and Deniliquin, with implications for irrigation enterprises, Indigenous cultural values held by groups such as the Ngarrindjeri and Yorta Yorta, and tourism centred on river heritage.
Governance frameworks involve intergovernmental instruments including the Murray–Darling Basin Agreement and oversight by the Murray–Darling Basin Authority, with funding and policy coordination by the Australian Government and state counterparts like the Government of New South Wales and Government of Victoria. Stakeholders include water corporations such as Goulburn–Murray Water, industry groups like the National Farmers' Federation, conservation organisations including the Australian Conservation Foundation and local Aboriginal corporations representing First Nations interests. Policy instruments sit alongside legal mechanisms such as the Water Act 2007 and regional planning administered by state water regulators and commissions.
Implementation relies on multi-party funding from federal programs, state budgets, and regional investments supported by bodies such as the Murray–Darling Basin Authority and grant schemes administered through entities like the Australian Government Department of Agriculture, Fisheries and Forestry. Performance evaluation uses salt load targets, audit reports and review processes analogous to periodic assessments conducted by the Productivity Commission and independent review panels, with measures of success reported to parliaments and stakeholder forums including regional catchment management authorities such as North Central Catchment Management Authority. Adaptive management cycles incorporate monitoring feedback, scientific advice from institutions like CSIRO and universities, and periodic revisions to operational plans under the Basin agreement.
Category:Environmental management