Floodplains are low lying areas near a watercourse that are subjected to flooding and unstable slopes due to erosion. In eastern Ontario, the 1:100-year floodplain is the regulatory standard used to identify lands that are vulnerable to flooding. Conservation Authorities in Ontario, including MVCA, are responsible for floodplain management, achieved primarily through the requisition of accurately engineered floodplain mapping data and documentation.
The Clyde River is a major tributary of the Mississippi River and has been identified as one of MVCA’s highest flood risk areas in the recently completed Flood Risk Assessment Study (2022). The Clyde River has seen many recent flood events including flooding in 1998, 2005, 2008, 2014, 2017 and 2019.
In response, MVCA will be developing regulatory floodplain mapping for Clyde River that will help us and our municipal partners understand flood hazards and implement effective mitigation strategies to reduce the impacts of flooding in the Clyde River watershed. The mapping will also inform MVCA’s flood forecasting and warning and emergency management programs.
The project will be carried out with support from Natural Resources Canada’s Flood Hazard Identification and Mapping Program (FHIMP) with anticipated completion in March 2024.