Reinforced Lake Ontario Shoreline to slow erosion
Floodplain Hillshade / Lidar

Updated Floodplain Mapping

The Ganaraska Region Conservation Authority (GRCA) partners with municipal partners to update floodplain mapping.

Floodplain mapping helps to identify areas that may be at risk of flooding during severe storms and is an important tool for land use planning and emergency preparedness.

GRCA Hazard Mapping

The GRCA develops hazard mapping that identifies the location of hazard areas to support the regulation made under the Conservation Authorities Act Regulation (Development, Interference with Wetlands and Alterations to Shorelines and Watercourses, Ontario Regulation 168/06).

This mapping is an important communication tool to illustrate areas affected by flood hazards, erosion hazards, wetlands, and the area of interference surrounding wetlands. These hazards are defined in text within regulations made under the Conservation Authorities Act. In the event of a conflict with the mapping, the text description prevails.

Floodplain Mapping Projects

Wilmot & Graham Creek Floodplain Mapping

Region of Durham Floodplain Mapping Update

County of Haliburton Floodplain Mapping