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Flood-line Mapping
History
The town of Angus
was mapped by Cockburn and Cumming in 1989 to show flood-lines. This mapping was
commissioned by Environment Canada and the Ontario Ministry of Natural Resources
in response to government Policy on Flooding (the Canadian and Provincial
governments had entered into a Federal-Provincial Agreement on Flood Damage
Reduction in 1985). According to the Federal-Provincial Agreement on Flood
Damage Reduction (1985), all flood prone areas were to be mapped with flood risk
zones being delineated. The NVCA oversaw the project and
mapping.
The project began
in 1986 and was completed in 1989 with "Cockburn Cumming" mapping. This
flood-line mapping depicted areas where development was "controlled", indicating
both a regional and 1:100 year flood line. In 2001 Council determined that it
would like to update the Cockburn Cumming flood-line mapping for the following
reasons: to use better technology to create more accurate mapping, and to
review areas that could be considered for additional development. As such,
Council joined with the NVCA to hire Greenland Consulting International to
prepare the new mapping and as well, to make recommendations on floodplain
policy and remediation.
After 15 reports
to Council and/or the public on the new mapping, the Ontario Ministry of
Environment approved the new flood-line mapping of "Greenland" on Oct. 17,
2006.
In comparison,
the new Greenland mapping extends over 246.3 hectares whereas the former mapping
covered 251.5 hectares, therefore, the new mapping depicts a 2.1% reduction in
lands affected by floodplain policy. However, there are some properties which
are now affected by Floodway policy - the most restrictive component of
floodplain policy. (Note that the policy is detailed in the Official Plan.) In
fact, there are 6 properties in Angus in which this may be of serious
concern to the landowner.
The
Township intends to consider the recommendations of Greenland in their Study
called the Angus Flood Remediation Study, during its current Official Plan
update since Greenland makes recommendation in terms of policy and flood
protection in its Study.