Ottawa conservation groups working to update floodplain maps - Ottawa - CBC News

By CBC News Ottawa, April 11, 2014

As flooding continues in Ottawa along the Rideau River, local conservation authorities are working to update floodplain maps last completed in the 1980s and early 1990s. The Rideau Valley Conservation Authority warned Thursday that water levels are expected to increase 10-15 cm over the next 24 to 36 hours in Old Ottawa South and in the southern stretch of the Rideau River from Manotick to Beckett's Landing. via Ottawa conservation groups working to update floodplain maps - Ottawa - CBC News.

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