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Water Today Title June 1, 2020

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WT Staff



Thousands of Canadians in Québec, Ontario, and New Brunswick are facing several more days of flooding as waters rise to record levels in some regions and slowly recede in others.

Rising water has overwhelemed many wells in eastern and central Ontario and residents were urged to stop using it; boil water advisories were issued for Bracebridge, Huntsville, Muskoka Lakes, and the Ottawa area .

Working alongside volunteers, the Canadian military has deployed some 2,000 troops to flood-ravaged regions that requested military help, compared to 1,600 deployed overseas.

In Québec, more than 5,000 residents were forced to flee as waist-high water filled the streets Of Sainte-Marthe-sur-le-Lac, after the Lake of Two Mountains burst through a natural dike.Another 1,500 people were evacuated the following day. The dike-breach brought to 5,584 the total number of flooded homes in Quebec, with some 7,566 people forced to evacuate.

In Ottawa, hundreds of military members joined more than 2,000 volunteers in preparing sandbags for properties threatened by flooding along the bloated Ottawa River, which is at or above record levels set in the last flood in 2017.

In New Brunswick the forecast calls for floodwaters to slowly recede in most areas this week, though communities along the Saint John River from Fredericton to Saint John remain above flood stage.


WaterToday is monitoring the threat to water purification plants caused by flooding in Ontario, Québec and New Brunswick and Manitoba.

NOTE: WT only publishes confirmed Boil Water Advisories, however residents with wells in flood impacted areas are urged to use an alternate water supply for drinking and cooking - WT ne publie que les avis d'ébullition émis et confirmés. Les résidents dans le zones sous innondation sont par contre avisé de ne pas utiliser l'eau de puits pour boire ou cuisiner.

A Boil Water Advisory was issue for Sainte-Marthe-sur-le-Lac, on Sunday due to the breach of a dike that held back the waters of Lake of Two Mountains.


In Ottawa, Canadian Armed Forces were setting up sandbags to protect the road that leads to the Britannia Water Purification Plant on Saturday which is at risk due to rising waters.


Spring Break Up - West Canada Report

British Columbia
From the BC River Forecast Centre, no flood warnings or advisories are in effect. With lower than average snow pack over the winter, many areas of BC are preparing for drought conditions in 2019.

Ice bridging on the Athabasca River has melted off and is flowing nicely through Fort Mc Murray today, according to Alberta River Basins report. An ice Advisory is still in effect for Peace River, where ice dams could occur.

Water levels are low for this time of year, leading to water shortage advisories for the Battle, Red Deer, Bow, Oldman and Milk River Basins.

No significant flooding reported by the Saskatchewan Water Security Agency.

Dry conditions in late winter reported.

Moderate flooding forecasted for the Souris and Red River basins, for low lying and agricultural lands. Portage Diversion has now been closed.


Analysis of weather and hydrological forecasts indicates that flooding will be significant in the coming hours in Quebec. Flood risks are very high in many places and will persist throughout the Easter holiday and possibly over the next week. Flooding from the spring thaw and rain has affected more than 2,300 homes in Québec and 1,500 residents have been evacuated, according to the latest numbers by Urgence Québec.
Link To Urgence Québec (French only)
Link to Flood Tracking Map
Link to affected areas and residents across the province

The Rideau Valley Conservation Authority (RVCA), in conjunction with the Mississippi Valley Conservation Authority (MVCA) and South Nation Conservation (SNC) is maintaining our FLOOD WARNING issued on April 19, 2019 for the areas under our jurisdiction along the Ottawa River. The latest model run for the Ottawa River indicates that some areas of the Ottawa River are expected to peak today while others will be closer to the end of the week. There is additional rain expected over the northern portion of the watershed that could impact levels and flows later in the week.

All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk.

A major stretch of Hwy 17 has been closed until further notice due to flooding and wash-out. Both directions of the highway have been closed from Banting Drive/Wylie Road in Deep River to Powell Lake Trail in Bisset Creek.

New Brunswick

St. John River water levels likely won't be as high as they were last year. The flood along the St. John River will peak in Fredericton and Maugerville on Monday before tapering off over the next few days. Meanwhile, the water levels in Oak Point, Quispamsis-Saint John, Jemseg and Sheffield will continue to climb above flood stage in the next 48 hours. About 120 Canadian Armed Forces troops were deployed Sunday to help sandbag and check on the welfare of residents.


Relentless rainfalls caused by two slow moving low pressure systems tracking northeastward from the Southern Plains States are causing extensive flooding in Ontario, Québec and New Brunswick. Here is a roundup of the latest information.


According to an email from DND received today at 4:00 pm "nothing has changed with regards to Ontario as there has been no request from the province for assistance".

Rain, heavy at times is expected in Southern Ontario and Québec. The frozen ground has a reduced ability to absorb this rainfall. Heavy precipitation and significant snow melt is causing an increase in water levels and risk for flooding in parts of Southern and Northeastern Ontario. Rainfall amounts of 20 to 40 mm have already been reported. An additional 5 to 10 mm of rain is expected today. Rain will taper off to drizzle this evening.

Localized flooding has been experienced in some areas of the Ottawa Valley (Kinburn, Mississippi Mills, Pakenham and Carleton Place).

Residents living in parts of eastern Ontario and western Quebec stocked up on sandbags and continued with last-minute flooding preparations as rain continued to fall throughout the region on Friday. For the second time in three years, homeowners were filling sandbags, building makeshift walls and preparing for water to spill over the area's river banks. Ottawa and Gatineau have both appealed to volunteers to help fill sandbags Saturday from 10 a.m. to 4 p.m.

Link to Ontario government flood map


Rainfall amounts of 20 to 40 mm have already been reported. An additional 5 to 10 mm of rain is expected today.

The Outaouais municipalities of Pontiac, Val-des-Monts and Saint-André-Avellin have declared states of emergency due to rising waters. Prime Minister Justin Trudeau told Quebec Premier François Legault that he would send in the army to help. Meanwhile, a motorist has died in Pontiac after a road washed away due to flooding.

Link to Québec Monitor for Rising Water (French only)

New Brunswick

Rain at times heavy will continue today as a low pressure system impacts New Brunswick. The rain will taper to showers and drizzle tonight, and a break in the shower activity is anticipated Sunday afternoon. Additional rainfall amounts of 20 to 40 mm are expected for today and tonight. This rainfall combined with snowmelt will enhance the threat of flooding.

The following advisory was issued Friday by the New Brunswick Emergency Measures Organization, River Watch 2019:

Residents in the communities of Saint François, Clair / Fort Kent, Baker-Brook, Saint-Hilaire, Edmundston, Iroquois, Saint-Anne-de-Madawaska, Saint-Léonard, Fredericton, Maugerville, Jemseg, Grand Lake, Sheffield / Lakeville Corner, Oak Point and Quispamsis / Saint John should be on high alert. Water levels are forecast to increase in the days ahead, passing or reaching flood stage.

People in these areas who have experienced flooding in the past should expect to experience similar or worse conditions and are advised to know the risks, take preventative measures, and to consider including voluntary evacuation if necessary.

A Government of New Brunswick request for assistance in dealing with spring flooding has been accepted by the federal government. Meetings between officials with the New Brunswick Emergency Measures Organization and representatives of the Canadian Armed Forces took place Friday night.

Residents who live along flood-prone areas of the St. John River should stay clear of the riverbanks, protect their homes, check on their neighbours and be prepared to evacuate, says New Brunswick's Emergency Measures Organization.

Link to New Brunswick Public Alerts Information


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