Watershed Conditions Statements
April 11, 2023
Flood Warning & Flood Watch – Update #2: Water Levels Now Declining Across the Watershed Except in Some Upper Watershed Lakes
(WCS - 07/2023) April 11, 2023 – The previous Flood Warning and Flood Watch messages issued on April 6th and 8th, 2023 are being updated to reflect current conditions. Rainfall amounts between 40 and 70 mm fell across the Rideau Valley Watershed on April 5, 2023, resulting in increased water levels and flows across the watershed which caused flood conditions in many low-lying areas adjacent to several rivers, lakes, creeks and ditches. Since that time, water levels have peaked and are receding in most areas, except those areas discussed below. The short-term weather forecast indicates no precipitation for the next four…
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Watershed Conditions Statements
April 08, 2023
Flood Warning & Flood Watch – Update #1: Water Levels To Remain High Across Rideau Valley
(WCS - 06/2023) April 8, 2023 – The Flood Warning and Flood Watch issued on April 6, 2023 remains in effect for the Rideau Valley watershed. Flood conditions are present in many low-lying areas adjacent to several rivers, lakes, creeks and ditches. Additional areas have the potential to flood next week, as the remaining snow within the City of Ottawa and the Tay River watershed is expected to finish melting due to multiple days with high temperatures in the double digits. The short-term weather forecast indicates no precipitation for next few days. Staring on Monday April 10, 2023, temperatures will…
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Watershed Conditions Statements
April 06, 2023
Flood Outlook — Lower Ottawa River | Perspective de crue – Cours inférieur de la rivière des Outaouais
Water Conditions Statement: Flood Outlook — Lower Ottawa River April 7, 2023 — A Flood Outlook Statement is being issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury). Based on forecasted higher temperatures and anticipated snow melt, levels and flows along the Ottawa River are expected to increase over the next few days, marking the beginning of the spring freshet in the Ottawa River basin. Snow cover varies significantly across the 146,300 km2 Ottawa River basin, with several areas experiencing above average snow water content. Based on current weather forecasts, minor flooding may occur in low-lying areas generally susceptible…
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Watershed Conditions Statements
April 06, 2023
FLOOD WARNING & FLOOD WATCH: Significant Rain Causes Water Levels To Rise Across Rideau Valley
(WCS – R05/2023) RIDEAU VALLEY, April 6, 2023 – A combined Flood Warning and Flood Watch is in effect for the Rideau Valley following a significant rain/freezing rain event yesterday. Flood conditions are present in many low-lying areas adjacent to several rivers, creeks and ditches. Additional areas have the potential to flood over the next few days, especially because of snow remaining within the City of Ottawa and the Tay River watershed. The short-term weather forecast indicates no precipitation for next few days. Daytime temperatures will generally be above zero and night-time temperatures will be below zero for next few days. Temperatures…
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Watershed Conditions Statements
March 30, 2023
FLOOD WATCH: Localized Flooding Possible as Precipitation, Warmer Weather Increase Rideau Valley Water Levels
(WCS – R04/2023) RIDEAU VALLEY, March 30, 2023 – A Flood Watch has been issued for the Rideau Valley as a rainy weekend mixes with the residual snowpack still intact in some areas after a cool March. Potential flooding could begin to impact low-lying areas as early as Saturday and continue throughout next week. Since early March, we have experienced a very gradual snow melt with some precipitation across the Rideau Valley Watershed. As such, snow remains in some parts of our watershed, most prominently in the City of Ottawa and the Tay River watershed, which indicates a potential for flooding in…
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Watershed Conditions Statements
(WCS – R03/2023) RIDEAU VALLEY, March 23, 2023 – A cool March combined with above-average snowfall amounts this winter means the snowpack is higher than average for this time of year across much of the Rideau Valley Watershed. This creates potential for above-average flooding in all low-lying areas adjacent to any rivers, creeks or ditches. The short-term weather forecast indicates rain amounts of 15-25 mm on Thurs. March 23 with temperatures well above zero, and cooler temperatures on Friday. Another precipitation event is forecast for Saturday and Sunday, but it’s unclear how much precipitation will fall, and if it will come…
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Watershed Conditions Statements
