April 18, 2023

Flood Warning – Update #3: Water Levels Continue to Decline Across the Rideau Valley Except in Upper Watershed Lakes

For more information, contact:

(WCS - 08/2023)
April 18, 2023 – The previous Flood Warning and Flood Watch messages issued on April 6th, 8th and 11th 2023 are being updated to reflect current conditions. Unlike the Ottawa River Watershed which is currently experiencing high water conditions, the water levels and flows in the Rideau Valley Watershed are declining and approaching seasonal levels in all waterways except for Bobs Lake and Christie Lake.

These lakes are near capacity and although the water level increases are now almost stabilized, the water levels may still increase with any significant rain. The current forecast indicates between 25 mm and 35 mm of rain could fall next Sunday. As such, the water levels in Bobs Lake and Christie Lake will likely increase due to the forecasted rain. Parks Canada staff are closely monitoring the water levels in these lakes, and operations at the Bolingbroke Dam will take place as required, to balance the levels in Bobs Lake and Christie Lake.  

At this time, a FLOOD WARNING is being maintained for properties around Bobs Lake and Christie Lake. 

The FLOOD WATCH issued on April 6th, 2023 for the properties around Big Rideau Lake is now over.

Residents in flood-prone or low-lying areas that are historically susceptible to flooding should take the necessary precautions to protect their property, such as:

  • Ensuring sump pump is clear, in good working condition and has a backwater valve
  • Ensuring easy access to a portable backup generator and pump
  • Ensuring downspouts are clear and the outlet is at least 3 metres from the dwelling
  • Securing items that might float away as flows increase
  • Removing valuable items from basements or lower floors that could be subject to flooding
  • Keeping emergency phone numbers handy
  • Familiarizing yourself with your municipality’s Emergency Preparedness Plan

This watershed conditions statement is in effect until Friday, April 28, 2023 and may be updated at that time unless the forecast or conditions change.


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More Information:

Contact: Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority
613-692-6804, 1-800-267-3504 ext. 1141

"Rideau Valley Conservation Authority is a partnership of municipalities within the Rideau Valley watershed 
created under the Conservation Authorities Act to deliver a range of programs in watershed management and
natural resource conservation."



RVCA Watershed Conditions Statements: 

  • Water Safety – High flows, unstable banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
  • Flood Outlook – Early notice of the potential for flooding based on weather forecasts, calling for heavy rain, snow melt, high winds or other conditions that could lead to high runoff, cause ice jams and/or lakeshore flooding or erosion.
  • Flood Watch – Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individuals in flood prone areas should prepare.
  • Flood Warning – Flooding is imminent or already occurring in specific watercourses or municipalities.

Contact Us

Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario K4M 1A5

613-692-3571, 1-800-267-3504



Regular Hours: Monday to Friday, 8:30 a.m. to 4:30 p.m.

Member of: conservation ontario