Most of the dune-scape Ouyen Salinity Province has been cleared for cropping, leaving nearly all of the numerous groundwater discharge depressions in amongst farmland.
Underlain by a regional scale Groundwater Flow System (GFS) comprising marine and alluvial origin sediments, faults are likely to feed groundwater up to many of these groundwater depressions. Salinity occurrence is predominantly primary salinity, but local scale GFSs associated with the dunes have led to some secondary salinity occurrence and expansion of primary salinity features.
As much of the salinity found in this province is primary, management activities are limited to trying to reduce recharge through cropping area soils to reduce secondary salinity processes. Farming activities and disturbance to saline areas should be minimised to prevent soil erosion and to allow suitable re-vegetation.
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