Polyline to show that areas below (south) of the line are considered to be areas which are 'downgradient' of municipal wells.

TRCA CAMaps Open Data2024-01-23 更新10

TRSPA SWP Highly Vulnerable Aquifers

Polygon file displaying the Toronto and Region Source Protection Area (TRSPA) Highly Vulnerable Aquifers (HVA). These areas are more susceptible to contamination moving from the surface into the groun

TRCA CAMaps Open Data2025-03-22 更新10

TRSPA SWP Event Based Areas

Polygon layer displaying Event Based Areas (EBA) in the Toronto and Region Source Protection Area (TRSPA). An EBA is an area where a specific activity exists or could exist in the future, and where a

TRCA CAMaps Open Data2025-03-22 更新00

TRSPA SWP WHPAQ1