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Update #4: Flood Warning — Lower Ottawa River

Submitted by E Thorne on Wed, 10/05/2023 - 2:54pm

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.   

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SHORELINE CONDITIONS STATEMENT: FLOOD OUTLOOK – ST. LAWRENCE RIVER

Submitted by E Thorne on Fri, 05/05/2023 - 2:40pm

A Flood Outlook Statement is being issued for areas along the St. Lawrence River shoreline in the South Nation Conservation (SNC) jurisdiction. According to the International Lake Ontario – St. Lawrence River Board, Lake Ontario’s water levels are above average for this time of year and are likely tocontinue increasing as a result of significant rainfall received this past week.

Environmental Conditions:

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Flood Warning - Update #2— Lower Ottawa River

Submitted by K Smith on Fri, 28/04/2023 - 2:42pm

April 28, 2023 — This FLOOD WARNING statement is an update to the Flood Warning issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury) on April 20th, 2023.

Water levels are expected to rise again within the Ottawa River Basin due to significant rainfall forecasted Saturday through Tuesday. Runoff from this rain event will bring additional water volumes to the Ottawa River at a time when levels are already near major flood thresholds.

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WATERSHED CONDITIONS: FLOOD OUTLOOK STATEMENT

Submitted by K Smith on Fri, 28/04/2023 - 1:45pm

Weather Forecast: Environment Canada is forecasting rain amounts from 30 to 50 mm across the jurisdiction starting Saturday and continuing into next week. Thunderstorms may produce additional precipitation locally.

Environmental Conditions: Precipitation will increase water levels and flows in rivers at a time when levels are already elevated due to the spring freshet.

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Update #1: Flood Warning — Lower Ottawa River

Submitted by E Thorne on Thu, 20/04/2023 - 1:28pm

This FLOOD WARNING statement is an update to the Flood Warning issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury) on April 17th, 2023.

Water levels are expected to continue rising within the Ottawa River Basin due to snowmelt, combined with forecasted rainfall starting Friday and continuing over the weekend. 

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FLOOD WARNING — Lower Ottawa River

Submitted by E Thorne on Mon, 17/04/2023 - 5:37pm

This FLOOD WARNING statement is an update to the Flood Watch issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury) on
April 14th, 2023.

Water levels are expected to continue rising within the Ottawa River Basin due to increased snowmelt associated with above normal snowpack and high temperatures over the weekend. 

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Water Conditions Statement: Flood Watch — Lower Ottawa River

Submitted by E Thorne on Fri, 14/04/2023 - 2:59pm

This FLOOD WATCH statement is an update to the Flood Outlook Statement issued for areas along the Lower Ottawa River (Arnprior to Hawkesbury) on April 7th, 2023.

Due to significant snow melt and forecasted rainfall anticipated on Sunday and Monday, water levels are expected to continue rising within the Ottawa River Basin.

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WATERSHED CONDITIONS: FLOOD WATCH

Submitted by E Thorne on Wed, 12/04/2023 - 5:37pm

This statement is an update to the Flood Watch Statement issued April 6th, 2023.

Weather Forecast: No additional precipitation is forecasted in the next 3 days and temperatures are forecasted to remain high, with overnight temperatures above zero.

Environmental Conditions: Water levels and flows are highacross the jurisdiction due to significant precipitation received last week, combined with snow and ice melt associated with the spring freshet.

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Water Conditions Statement: Flood Outlook — Lower Ottawa River

Submitted by E Thorne on Fri, 07/04/2023 - 2:33pm

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.

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