What is a two-zone concept for flood-plain development?
A flood-plain can be divided into two zones: a floodway and a flood fringe. The flood fringe is the outer portion of the flood-plain where floodwaters are shallow and slow moving. The two-zone concept allows for some development within the flood fringe areas that can be built on with no adverse impacts. The floodway is the central portion of the flood-plain where faster and deeper water flows, and where development should not take place. The floodway/flood fringe concept was a recommendation in the Carp River Watershed/Subwatershed Study. The two-zone approach is permitted under the Provincial Policy Statement and the City’s Official Plan. Delineation of the zones is approved by the appropriate conservation authority and regulated by the Conservation Authorities Act.
