Toronto Islands Flooding - Ward's Island

December 1, 2017

Month: March 2018
Organization: Toronto and Region Conservation Authority
Products: ArcGIS Desktop 10.4 with 3D Analyst Extension

In May 2017, Lake Ontario rose to a 100-year high. As a result, the Toronto Islands were inundated and 46,000 sandbags were placed. A series of maps was produced using LiDAR to identify the areas threatened by the rising waters. The lake level was modelled in 10-cm increments, and that area was intersected with building footprints. These maps were used by the Office of Emergency Management and sandbagging crews.

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