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VOL. 39 • No. 9
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MANOTICK, ONTARIO
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Friday May 6, 2022
Ghamari calls on RVCA to pump the brakes on new flood plain regulations By Manotick Messenger Staff
A crowd of more than 100 local residents turned out to a public meeting on flood plain mapping hosted by the RVCA at the Alf Taylor Community Centre in North Gower on Thurs., April 21. Many of the residents in attendance were not happy with the RVCA over the organization’s remapping of the Steven’s Creek floodplain. They were upset because they were not consulted and had no input, and for many of the landowners near Steven’s Creek, there were huge implications which were both practical and financial. Carleton Progressive Conservative MPP Goldie Ghamari pushed hard for the implementation of the new mapping to be put on hold until a public meeting could be held. Because of
COVID-19, a public meeting was not an option. Without Ghamari stepping in, the public meeting may never have happened. RVCA Executive Director Sommer Casgrain-Robertson opened the meeting with a half hour presentation on the RVCA’s role and how the mapping of the 156 square kilometre area was done. She explained that previous mapping had been done in 1972 and 1995. She said sine the old mapping was more than 25 years old, it was time for it to be updated. As a result of new data made available to the RVCA, the new flood line is anywhere between 18 and 55 centimetres higher than the previous one. Many of the landowners saw a significant amount of the properties fall below the new flood line. Since structures or buildings are not permitted to be built below
the flood line, much of the land in question has lost options for usage as well as its worth. “Very rarely have we seen a study change this much,” Casgrain-Robertson said. “The results were a cause for concern. It made our staff step back and ask why. It made us go back and triple and quadruple check everything we had done.” Casgrain-Robertson explained to the audience that the reason for the big change in mapping is that the numbers used for mapping in the 1972 and 1995 studies were based on spring flood levels. She said the data used for this study was from the summer. “It was recognized in 1972 and in 1995 again that Steven’s Creek was more likely to have significant flooding from a summer rain event than the spring melt, but at the time there was not enough or any climactic data
Carleton MPP Goldie Ghamari met with many North Gower-area residents during the RVCA public meeting on flood plain mapping April 20. Manotick Messenger photo
to be able to model a summer storm,” she said. As a result, the flood mapping results showed a significant difference.
“It’s not that this new study is overestimating the flood risk,” CasgrainRobertson said. “It’s really understanding that 1972 and
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1995 were understating the flood risk.”
flood
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