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Salinity Province 63, Lindsay Wallpolla

Thumbnail image showing the location of Lindsay Wallpolla Salinity Province in Victoria The medium sized Lindsay-Wallpolla Salinity Province is in far NW Victoria, bounded to the North by the Murray River and covering the area from Wentworth to the South Australian border, much of which is uncleared land.

Two small areas of irrigation near Culleraine and Lindsay amid dryland grazing and cropping are confined to the Sturt Highway corridor. Like all other Mallee provinces, a regional scale Groundwater Flow System (GFS) comprising marine and alluvial origin sediment, with possible structural control (geological faults) aiding groundwater discharge, underlies this area. Local to intermediate scale GFSs associated with the dunes and younger alluvial sediments along the Murray River trench are associated with mostly primary salinity features such as Lake Wallawalla and the conveyance of highly saline groundwater to the Murray River. Natural (primary) salinity processes in this already high salinity landscape have been exacerbated by increased groundwater recharge associated with irrigation development. The main salinity management initiatives are saline groundwater interceptions schemes that divert groundwater to evaporation basins away from the river



Province Attributes

Catchment Management Region:MALLEE
Priority Status:High
Province Area:130,980 ha
Recorded Soil Salinity Area 1:25,867 ha
Dominant Surface Geology Type:Sedimentary
Influence of Geological Structure on Salinity Occurrence/s:Definite
Relevant Geomorphological Mapping Units (GMUs)4.2.4, 4.1.1
Predominant Groundwater Flow Systems (GFSs):Regional & Local/Intermediate
Relevant Irrigation Areas:N/A


Lindsay Wallpolla Salinity Province Map

A detailed map showing the Lindsay Wallpolla Salinity Province

Links to further reading and material related to the Mallee Salinity Province
For further information relating to groundwater levels and salinities in this Province please see: Visualising Victoria's Groundwater (VVG)



1 Please Note: The ‘Recorded Soil Salinity Area’ indicated in the Salinity Province Attribute Table, comprises the total geographic area that has been mapped as having, or showing symptoms of, dryland soil salinity at some time (past or present). As dryland salinity occurrence in the Victorian landscape exhibits many different levels of severity and can change due to climate, landuse and vegetation, previously mapped areas may no longer be showing symptoms. In addition, as not all parts of the State have been mapped, or mapped in the same way, the mapping may not have captured some occurrences.

The soil salinity mapping used to calculate this ‘area’ does not cover irrigation regions. In irrigation regions, depth to watertable and watertable salinity mapping has been used to convey the threat of high watertables on soil waterlogging and/or soil salinisation and these areas are not included in this ‘area‘ calculation.

Please contact the Department, your Catchment Management Authority or your rural water provider for more information about salinity in your location.
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