Ottawa Hazard Mapping Public Open Houses

Members of the public are invited to one of two upcoming open houses to review hazard maps. The RVCA has just completed a review and update of existing hazard maps (floodplain and steep slopes) along the Ottawa River from Shirley’s Bay to Cumberland. New mapping has been generated for Cardinal Creek, a tributary of the Ottawa River, from the Ottawa River to O’Toole Road.

The Rideau Valley Conservation Authority (RVCA) is one of three Conservation Authorities working on updating and improving hazard maps on behalf of the City of Ottawa. Mississippi Valley Conservation and South Nation Conservation are also working on similar projects in their watershed.

These maps are typically known as “floodplain mapping,” but they also show areas that a prone to natural hazards such as flooding, erosion and unstable slopes and natural environment features such as wetlands. The mapping takes these features into consideration and will be used by the City of Ottawa and the Conservation Authority when updating Official Plans and Zoning Schedules and in the review of other related Planning Act applications.

“The goal of this mapping is to help ensure that sound planning decisions are made — keeping people and property safe,” said Don Maciver, RVCA Director of Planning and Regulations. “Accurate engineered hazard mapping is the foundation of effective floodplain and resource management.”

Members of the public are encouraged to attend one of two open houses and/or provide comments on the draft mapping.

Open House 2 (WEST)
Tuesday, December 9, 2014, 4 to 8 p.m.
Ron Kolbus Lakeside Centre
120 Greenview Ave, Ottawa

Conservation Authority staff welcome historical records of past flood events, news clippings, photographs, and even anecdotal stories to help confirm the reasonableness of calculations and resulting hazard mapping. Local residents are encouraged to share their knowledge to help the Conservation Authority further refine these maps.

For those unable to attend an open house, mapping can also be seen online at and comments sent to


For more information contact:
Ferdous Ahmed
RVCA Senior Water Resources Engineer
1-800-267-3504 ext. 1170


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