News & Events

Minor Flooding of Low-Lying Areas the Result of Heavy Rains

(WCS – 40/2017)  October 30, 2017 –  Rainfall over the last three days from 70 to 100 millimetres has caused water levels typically seen in the spring in the Rideau watershed.  

Flows rose dramatically from what they were going into the weekend after very little rain through September and most of October.

Operation of the Long Island Dam by Parks Canada staff slowed the increase of levels on the Long Reach. However, access roads to communities on the Rideau near Kemptville may still be threatened as the water from upstream passes through the system.

In Perth in the Tay Subwatershed, flooding has so far been limited to Stewart Park. Adjustments will be made as required at the construction site at Haggert Island Dam to accommodate increased flows.

Possibly those most affected by the heavy rains may be the farming community. With significant standing water left in fields, farmers may have difficulty removing the remaining crops. Rain forecast over the rest of the week will continue to cause problems getting on the fields.

The additional rain into next weekend can be expected to slow the recession of waters in streams such as Steven Creek. Residents in North Gower can expect to see the banks close to full through to next week.

Residents are advised to stay away from rivers as the forecasted weather may rapidly increase river flows, and cause slippery river banks.  Parents are encouraged to explain these dangers to their children.

For water level and flow information in the Rideau system as well as the Ottawa River, visit the RVCA Streamflows and Water Levels webpage at:

For more information about conditions on the Ottawa River, check the webpage of the Ottawa River Regulation Planning Board at .


More Information

Contact: Patrick Larson, RVCA Senior Water Resources Technician

Rideau Valley Conservation Authority

613-692-6831, 1-800-267-3504 ext. 1210 or cell 613-799-9423

“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 area watercourses.