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Main Office Phone Numbers : 613-692-3571 / 1-800-267-3504
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April 12, 2017
Flood Warning Downgraded to Flood Watch
With access ways to the waterfront properties on the Long Reach of the Rideau River (Kars to Burritts Rapids) again passable, the Flood Warning, in place for the last week, is now reduced to Flood Watch. Rain forecast for Saturday evening into Sunday is expected to cause an upturn in flows in the Rideau system. However, flows are expected to have receded sufficiently by then that the increase will have a minor impact. The expectation is that flows, as measured at the recording station at Carleton University, will increase to about 280 cubic metres per second (cms) by early Monday.…
Published in
Watershed Conditions Statements
Access water chemistry results by searching your area of interest or zooming into an area and selecting a sampling site.
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Monitoring & Reporting
Eric Lalande
Published in
Science and Planning
April 10, 2017
Flood Warning — Rideau River Water Levels Subsiding
Water levels have been dropping throughout the Rideau watershed since Saturday but not all flooded areas are fully dry yet. Water levels have dropped about 22 centimetres since the Saturday peak on the Long Reach between Burritts Rapids and Manotick. Another 34 centimetres are left to go on Hilly Lane and similar amounts on the neighbouring waterfront communities near Kemptville. Until those communities have safe access restored, the Flood Warning will remain in effect. The decline in levels in the Long Reach will be slowed by rain forecast for tomorrow and by water that has to be released from Big…
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Watershed Conditions Statements
April 08, 2017
Flood Warning — Rideau System Reaching Peak Water Levels
Runoff from the rain event on Thursday is working its way through the system leaving several waterfront communities still without access to their properties. Water levels have been holding more or less steady for the last few hours. A definite peak has not yet been reached but can be expected today. Cooler temperatures overnight have slowed the runoff process. Temperatures of over 10 degrees forecast for today will cause much of the remaining snow and ice to melt and run off today which will keep levels up for the short term. Once a definite decline of levels begins, Parks Canada…
Published in
Watershed Conditions Statements
Heavy rain on Thursday has caused streamflows and lake levels to increase significantly in the Rideau River watershed. The amount of rain that fell in eastern Ontario wasn’t quite as much as forecast but it is certainly having an impact. Such water levels were last reached in 2014. The worst impact is in North Grenville and rural Ottawa near the confluence of Kemptville Creek with the Rideau River. Some street and pathway flooding is occurring in Ottawa South adjacent to and in Windsor Park and in Ottawa East in Brantwood Park. No residential flooding in urban Ottawa has been reported…
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Watershed Conditions Statements
Rain presently falling is causing flows in the Rideau River to increase toward thresholds at which flooding can be expected to cause access issues to lower lying waterfront properties. The area first affected will be the Long Reach of the Rideau between Kars and Kemptville. In particular, access to Hilly Lane, Cedar Beach, Rideau Glen and other neighbourhoods on that reach of the river can be expected to be compromised as the rain enters the system today. Rain forecast in the order of fifty-five millimetres (mm) on Thursday and Friday can be expected to be followed by a peak on…
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Watershed Conditions Statements
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April 04, 2017
Flood Watch — Rain Bringing Spring High Waters
Rain presently falling is causing flows in the Rideau River to increase toward thresholds at which flooding can be expected to cause access issues to lower lying waterfront properties. The area first affected will be the Long Reach of the Rideau between Kars and Kemptville. In particular, access to Hilly Lane, Cedar Beach, Rideau Glen and other neighbourhoods on that reach of the river can be expected to be compromised as the rain enters the system today. Rain forecast in the order of fifty-five millimetres (mm) on Thursday and Friday can be expected to be followed by a peak on…
Published in
Watershed Conditions Statements
Note: as of April 1, 2024, Ontario Regulation 41/24: Prohibited Activities, Exemptions and Permits will replace the RVCA's existing Ontario Regulation 174/06 under Section 28 of the Conservation Authorities Act. Our online mapping tool has been updated to reflect the new regulation.
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Complete and submit our General Property Inquiry Form to receive a map showing the mapped hazard (floodplain, unstable slope, wetland) or natural feature, 1:100 year flood elevations if applicable and available, links to general information, regulators and policies. Please allow for 24 hour response time for General Property Inquiries.
If you require formal written response to legal, real estate and related financial inquiries or require a review of historical files for specific project/proposals or technical review, you must request a Property File Search.
Published in
Regulations & Planning
Rain presently forecast for this week is expected to cause a significant increase in flows and water levels, potentially to 1:4 year frequency (flow that has a 25% probability of occurrence in any year). There is still some snow in the Rideau River watershed which will be much reduced today with the arrival of temperatures above 10 degrees. This will increase flows slowly through the day. Twenty millimetres of rain now forecast for Tuesday will cause further increases. Fifty millimetres of rain on Thursday and Friday can be expected to bring a peak on Saturday possibly in the range of…
Published in
Watershed Conditions Statements
March 28, 2017
RVCA Celebrates Successful Year
The Rideau Valley Conservation Authority (RVCA) Board of Directors celebrated another successful year with the release of their 2016 Annual Report. The report highlights numerous on-the-ground projects that happened throughout the Rideau watershed that drains over 4,000 square kilometres in Eastern Ontario. For over 50 years RVCA, along with its many volunteers and partners, has been working to protect and enhance our local environment. Year after year, conservation authority staff, municipalities and partners continue to have a positive impact on the health and resilience of our watershed. Today’s investment in local watershed health will ensure a sustainable future that supports…
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Media Release
