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#LegendGroup=South_Georgian_Bay_Lake_Simcoe_Source_Water_Protection
#Category=South_Georgian_Bay_Lake_Simcoe_Source_Water_Protection
#Description=An aquifer that can be easily changed or affected by contamination from both human activities and natural processes as a result of (a) its intrinsic susceptibility, as a function of the thickness and permeability of overlaying layers, or (b) by preferential pathways to the aquifer. The Director's rules will permit the use of various methods, such as the Intrinsic Susceptibility Index (ISI), to determine those aquifers that are highly vulnerable. Ontario's ISI defines a highly vulnerable aquifer as having a value of less than 30. An ISI is a numerical indicator that helps to indicate where contamination of groundwater is more or less likely to occur as a result of surface contamination due to natural hydrogeological features. The ISI is the most commonly used method of index mapping and was the prescribed method set out in the provincial 2001/2002 Groundwater Studies. This dataset was sourced from the Lake Simcoe Region Conservation Authority.<br/><a href="http://www.lsrca.on.ca/" target ="_blank"> Click Here For More Information</a> |