News & Events

More Rain Forecast for Sunday

(WCS – 42/2017)  November 3, 2017 –  Rain forecast for Sunday could raise water levels again.  

In the order of 25 to 30 millimetres of rain fell on the Rideau watershed yesterday and this morning, less than was forecast. The rain was not enough to raise water levels significantly.

Rain now forecast for Sunday has the potential to be enough to raise the already elevated flows. Ministry of Natural Resources and Forestry meteorologists have forecast 10 to 25 mm of rain on Sunday which could increase to a total of 40 to 75 mm if thunderstorms occur on Sunday night. The result could be localized with increased flows confined to small areas. Or the rain could fall more generally throughout the watershed which again raises the possibility of flooding low-lying areas that have already been affected in the Long Reach.  

The Tay in Perth remains a problem with flows limited to the Little Tay. This has caused high flows through Stewart Park. Monitoring of the construction site at the Haggart Island Dams will continue.

Flows in Kemptville Creek have continued to rise despite adjustments to the Oxford Mills Dam. Present flows are below typical spring flows but are ten times the normal for this time of year.

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:  https://www.rvca.ca/watershed-monitoring-reporting/monitoring/surface-water-quantitiy

For more information about conditions on the Ottawa River, check the webpage of the Ottawa River Regulation Planning Board at http://ottawariver.ca/river-levels-flows.php#river-levels-flows-7-days .

-end-

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