The Raak Plains Salinity Province is located around the specific primary salinity feature of the Raak Plains Salinas. Saline groundwater discharge from the deeper regional scale Groundwater Flow System (GFS) has salinised a clay depositional feature called the Blanchetown Clay, which has then been blown away by the wind to form saline depressions known as "boinkas".
The province is mostly still under remnant vegetation of the Murray-Sunset National Park however, some cropping does occur in the north and east of the province in and around many of the primary salinity features. Some expansion of the primary groundwater discharge areas followed land clearing and wetter climate periods, which increased recharge in the local to intermediate scale sand dune GFSs.
Management actions should focus on reducing recharge through cropping area soils to slow the secondary salinity processes. Grazing in and close to saline areas should also be minimised to protect salt tolerant vegetation and prevent soil erosion.
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