Watershed Conditions Statements

(WCS – R13/2023)August 10, 2023 – Caution is advised around all waterways in the Rideau Valley Watershed following several large rain events over the last few weeks, with additional rain in the forecast. Observed rainfall amounts for the last month across the watershed are significantly more than normal. Environment Canada’s short-term weather forecast indicates we may receive an additional 50 to 100 mm of rain over the next 7 days.  Water levels and flows in all waterways are generally higher than average for this time of year across the Rideau Valley Watershed. Although no significant riverine flooding is anticipated, water levels…
(WCS-LW - 2/2023)August 9, 2023 – Watershed conditions in the Tay River and Rideau Lakes watersheds have returned to “Normal’ under the Ontario Low Water Response Program. However, the water levels in Bobs and Christie Lakes, which are used throughout the recreational season to augment the flow in the Tay River and regulate navigation in the Rideau River, are still below average for this time of year.  Parks Canada staff continue to closely monitor these lakes and expect the water levels to approach normal levels with rain in the forecast. With well above-average rainfall amounts across the watershed during the last…
(WCS-LW - 1/2023)July 11, 2023 – Following a period of dry and hot weather, the Rideau Valley Low Water Response Team is declaring a MINOR low water status for the Tay River and Rideau Lakes watersheds (referred to as Upper Rideau Valley watershed), after officials met to discuss current watershed conditions on Monday, July 10, 2023. Upper Rideau Valley watershed residents and businesses are encouraged to voluntarily reduce their water usage by 10 percent. This is especially important for those who have permits for taking water from surface or groundwater sources and all residents on private, communal or municipal wells. The requested…
(WCS – R12/2023)May 19, 2023 – The Rideau Valley Conservation Authority (RVCA) is terminating the Flood Watch that was previously in effect and issuing a High Water Safety message for Bobs Lake and Christie Lake.The water levels on Bobs and Christie Lakes continue to decline slowly. Although some precipitation is in the forecast for the weekend, both lakes are now near seasonal levels and are not expected to increase significantly. Parks Canada staff are closely monitoring the water levels in these lakes. Operations at the Bolingbroke Dam will take place as required to balance the levels in Bobs Lake and Christie Lake.Water levels and flows…
Water Conditions Statement: Water Safety — Lower Ottawa River May 18, 2023 – The Flood Warning for the Ottawa River issued on May 10, 2023 has been downgraded to a Water Safety Statement.  Water levels along the Lower Ottawa River from Gatineau to the Grenville/Hawkesbury area are expected to continue decreasing over the coming days.   Based on Ottawa River Regulating Committee forecasts, Ottawa River water levels are declining, and the rate of decline is slowing as they reach normal summer targets. There is no snow remaining in the watershed and reservoirs are now targeting summer levels. No significant rain is forecasted for the…
Water Conditions Statement: Flood Warning — Lower Ottawa River May 10, 2023 — This FLOOD WARNING statement is an update to the Flood Warning issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury) on May 2nd, 2023.  Water levels along the main stem of the Ottawa River reached peak levels on May 5th and 6th due to above normal snow melt in the upper region of the basin this spring, combined with large regional rain events that occurred over several days in late April and early May.    Based on Ottawa River Regulating Committee forecasts, it is expected that water levels…
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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