Our house is on the edge of a flood plain. We know this, because the end of our street in Toronto Riverside was at Lake Ontario, before landfill in the early 1900s. Not everyone knows about what's under the place where they live.
"Poor flood-risk maps, or none at all, are keeping Canadian communities in flood-prone areas" | Matthew McClearn | April 23, 2019 | Globe & Mail at https://www.theglobeandmail.com/canada/article-poor-flood-risk-maps-or-none-at-all-are-keeping-canadian-communities/
Toronto and Regional Conservation Authority, Flood Plain Map at https://trca.ca/conservation/flood-risk-management/flood-plain-map-viewer/