To select layers to show, click on the button in the upright corner. It is possible to superpose on the base layer, optional layers to analyze flooded areas. The NASA infrared layer, combined with other satellite imagery, darker the color of flooded areas. Note that the NASA layers are slightly offset relatively to other images.
Flooded areas : We interpreted the different information available to indicate the flooded areas in May 2011. The cutting of the flooded areas is approximate and is based on visual observations and testimonies. Information is however clear enough to show the extent of flooding. One can observe the wide strips along the Richelieu River in Saint-Jean-sur-Richelieu to Lake Champlain. Also note that large portions of the flooded areas in the territories of Henryville, Noyan, Clarenceville, Venise-en-Québec and Carignan are wetlands (ie swamps, marshes, etc.). Topographic maps from Natural Resources Canada and the work of Ducks Unlimited in collaboration with the Geomatics Montérégie GéoMont confirm the existence of these large wetlands (See Base map of wetlands in Montérégie (2008)).
Detailed satellite images of floods only covers the territory of Canada. However, media reports said that more than 500 homes were flooded in Vermont State.
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