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In this section you will find detailed information, including national overviews and state and regional level assessments, from the 2000-2002 National Land and Water Resources Audit theme assessments.
National Land and Water Resources Audit
Victorian Dryland Salinity Assessment 2000
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Summary
The first comprehensive assessment of the distribution of dryland salinity in Victoria indicated that at least 120 000 ha of mostly agricultural land was visibly affected. On-going monitoring of groundwater levels and subsequent monitoring and mapping of saline discharge areas suggests that this area has continued to increase.
Sinclair Knight Merz and Agriculture Victoria - Centre for Land Protection Research were commissioned by the National Land and Water Resources Audit to undertake this study, which seeks to determine:
- the current and future potential extent of shallow water tables and dryland salinity in Victoria
- impacts of shallow water tables and dryland salinity on agricultural production, infrastructure, the natural environment and water resources.
The study builds on the methodology and outputs of similar work undertaken in support of the Murray-Darling Basin (MDB) Salinity Audit.
The current and future extent and impact of shallow water tables and dryland salinity is assessed across the majority of the state of Victoria. Four types of landscape have not been included, namely:
- irrigation areas of the Goulburn, Campaspe, Loddon and Murray valleys of northern Victoria and the Lake Wellington area of Gippsland
- relatively large contiguous areas of native vegetation, mostly on public land
- areas with no suitable groundwater information, which were mostly located in areas of relatively high elevation and rainfall in eastern Victoria
- metropolitan Melbourne and major regional centres.
While dryland salinity is an issue in several major regional centres, the study includes almost all of the land considered to be at potential risk from shallow water tables and dryland salinity in the state.
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