Table 3 Summary of literature for areas identified as being vulnerable, or potentially vulnerable, to SWI in Tasmania. SWI Land / Aquifer SWI SWI Level of Location References occurrence Driving factors Investigations groundwater lithology monitoring management assessment reported use Woolnorth (Cradle Tertiary Yes (e.g. Cradle Groundwater Limited data No No None to Not reported Coast NRM limestone Coast NRM extractions; Very Low “saline Committee, Committee, coastal influences” 2005) 2005) King Island (Ezzy, 2003) Quaternary No Groundwater extractions Limited data No No None to Town water dune sands Very Low supply King Island, (Dyson, Proterozoic No Faults intersected by Limited data No No None to Mine de-watering Grassy scheelite 2006) fractured mining operations at Very Low mine site metasediments depths below sea level Duck River Unknown Alluvium over No Groundwater extractions Unknown No No None to Agricultural Catchment (Mella fractured to Very Low irrigation /Smithton karstic Syncline GAA)* Proterozoic dolostone Montagu River Unknown Alluvium over No Groundwater extractions Unknown No No None to Agricultural Catchment fractured Very Low irrigation (Togari/Smithton Proterozoic Syncline GAA)* sediments Welcome River Unknown Alluvium over No Unknown Unknown No No None to Agricultural Catchment Cainozoic Very Low irrigation (Smithton sediments and Syncline)* volcanics * areas were highlighted by stakeholders as potentially vulnerable to SWI, although there may be little to no SWI references/information available
Table 3 Summary of literature for areas identified as being vulnerable, or potentially vulnerable, to SWI in Tasmania. Location References Aquifer lithology SWI occurrence reported Driving factors Investigations SWI monitoring SWI management Level of assessment Land / groundwater use Woolnorth (Cradle Coast NRM Committee, 2005) Tertiary limestone Yes (e.g. Cradle Coast NRM Committee, 2005) Groundwater extractions; “saline coastal influences” Limited data No No None to Very Low Not reported King Island (Ezzy, 2003) Quaternary dune sands No Groundwater extractions Limited data No No None to Very Low Town water supply King Island, Grassy scheelite mine site (Dyson, 2006) Proterozoic fractured metasediments No Faults intersected by mining operations at depths below sea level Limited data No No None to Very Low Mine de-watering Duck River Catchment (Mella /Smithton Syncline GAA)* Unknown Alluvium over fractured to karstic Proterozoic dolostone No Groundwater extractions Unknown No No None to Very Low Agricultural irrigation Montagu River Catchment (Togari/Smithton Syncline GAA)* Unknown Alluvium over fractured Proterozoic sediments No Groundwater extractions Unknown No No None to Very Low Agricultural irrigation Welcome River Catchment (Smithton Syncline)* Unknown Alluvium over Cainozoic sediments and volcanics No Unknown Unknown No No None to Very Low Agricultural irrigation * areas were highlighted by stakeholders as potentially vulnerable to SWI, although there may be little to no SWI references/information available
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