The lake is artificial and shallow R L Croome and P A Tylor: Phytoplankton biomass and primary productivity of Lake Leake and Tooms Lake, Tasmania covering 6 sqkm http://search.frdc.com.au/search/cache.cgi?collection=ifc&doc=http://www.ifc.tas.gov.au/pdf%252520files/Tooms%252520%252520FPA.pdf.pan.txt