River Ice In Canada - Guide (French, PDF)

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Publisher-reported update

2026-04-08

River ice roughness products from the current calendar year in selected Canadian regions that have been designated for observation, monitored by Natural Resources Canada using satellite imagery for emergency response. Coverage is not comprehensive nationwide. In order to mitigate ice jam induced floods risks, Natural Resources Canada emergency geomatics service (EGS) may be activated by Canada’s emergency management authorities. As new satellite imagery becomes available, NRCan will produce river ice roughness maps and update the dataset in near real time (4 hours). This item contains record of the river ice roughness products generated in the current year. For the complete archive, please refer to the River Ice in Canada - Archive entry. The river ice product is generated and validated on a best effort basis. Various factors may affect the quality of the river ice roughness maps. Those factors include but are not limited to: environmental condition at the time of acquisition, image resolution or the limitations of the methodology used. To view a specific product, filter the data by date (UTC Date) and area of interest (AOI). Links to download specific EGS product are available…

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