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Current Watershed Conditions



 

Most Recent Water Levels in the South Nation River Watershed

 

Current and Past Watershed Condition Statements below:

 

FLOOD WARNING: Saint Lawrence River – Update #1

 May 24, 2019

Weather Forecast: Rainfall of 10 to 25 mm is possible Saturday, May 25, 2019. A strong wind warning is in effect as current forecasts suggests winds will continue to have a noticeable impact on water levels.

Environmental Conditions: Lake Ontario’s levels have been rising at a slower rate this week due to lower amounts of precipitation, allowing for Lake Ontario outflows to be increased substantially as Ottawa River flows declined.

Levels are already at critical values in some areas. Flooding and other high-water impacts continue to be reported around the upper Saint Lawrence River during periods of active weather.

Risks: The latest forecast from the International Lake Ontario – St. Lawrence River Board suggests that Lake Ontario is expected to reach its seasonal peak within the next 1 to 2 weeks. Peak levels are expected to be slightly above the highs of 2017.

Lake Ontario’s increased outflows may increase St. Lawrence River levels upstream of Iroquois throughout Edwardsburg/Cardinal and Augusta Township.

Residents are advised that wind may cause large waves, further aggravating water levels which may affect structures close to shore.

ACTION: Residents in flood-prone areas are encouraged to closely monitor conditions and take necessary actions. Sandbags are available to residents in flood prone areas. 

Residents are advised to stay away from watercourses where flows are high and where banks might be unstable. Parents are encouraged to explain dangers to children.

Residents in flood prone or low-lying areas historically susceptible to flooding are encouraged to closely follow evolving conditions and take necessary precautions to protect their property.

Duration: This Flood Warning statement is in effect until Thursday, May 30, 2019 at 5:00 PM

SNC monitors the water levels and weather forecasts as part of the Flood Forecasting and Warning Program. Updates are provided as conditions change.

The International Lake Ontario – St. Lawrence River Board continues to monitor conditions on an ongoing basis. Information on hydrologic conditions, water levels and outflows, including graphics and photos, are available on the Board’s website at www.ijc.org/en/loslrb.

Please visit www.nation.on.ca for more information. To provide feedback with respect to changes in water related conditions please email waterwatch@nation.on.ca, post on our Facebook (/SouthNationConservation) or Twitter (@SouthNationCA).

FOR MORE INFORMATION: Jason Symington, SNC Environmental Technician, 613-551-9057, jsymington@nation.on.ca.  

FOR MEDIA INQUIRIES: John Mesman, Team Lead, Communications, 613-899-5341, jmesman@nation.on.ca.

Forwarded to: 
All Flood Forecasting and Warning Directory 

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FLOOD WARNING: Ottawa River – Arnprior to Hawkesbury – Update #13

May 22, 2019

Weather Forecast:
Rainfall of 10 to 15 mm is possible Friday, May 24, into Saturday, May 25, 2019.

Environmental Conditions:
Water levels along the lower Ottawa River from Chats Lake to the Grenville/Hawkesbury area will continue to progressively decline over the coming weeks.

Risks:
All flood-prone areas along the Ottawa River from Lac Coulonge down to the Montreal Archipelago are at risk as spring runoff continues along the upper Ottawa River.

Levels are expected to remain high for the next few weeks.

Risk is highly dependent on the amount of precipitation that is received.

Updates to all projections will be provided as they become available.

Due to the forecast uncertainty it is difficult to accurately predict how quickly water levels will rise and when river conditions may peak.

ACTION:
Residents in flood-prone areas are encouraged to closely monitor conditions and take necessary actions. Sandbags are available to residents in flood prone areas. 

Residents are strongly urged to keep sandbags in place for at least the next two weeks.

Residents are advised to stay away from watercourses where flows are high and where banks might be unstable. Parents are encouraged to explain dangers to children.

Duration:
This Flood Warning is in effect until Tuesday, May 28, 2019 at 5:00 PM.

South Nation Conservation (SNC) and its Ottawa partners, the Rideau Valley and Mississippi Valley Conservation Authorities, monitor the water levels and weather forecasts with the Ministry of Natural Resources and Forestry as part of the Flood Forecasting and Warning Program. Updates are provided as conditions change.

The Ottawa River Regulation Planning Board will be reassessing forecast conditions and providing hydrological condition updates on its website daily at www.ottawariver.ca/forecast.php.

Please visit www.nation.on.ca for more information. To provide feedback with respect to changes in water related conditions please email waterwatch@nation.on.ca, post on our Facebook (/SouthNationConservation) or Twitter (@SouthNationCA).

For more information regarding the Ottawa River, visit www.ottawariver.ca

FOR MORE INFORMATION: Omar Kana’n, SNC Water Resources Analyst,
613-551-9057, okanan@nation.on.ca.

FOR MEDIA INQUIRIES: John Mesman, SNC Team Lead of Communications,
613-899-5341, jmesman@nation.on.ca

FORWARDED TO: All Flood Forecasting and Warning Directory

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WATERSHED CONDITIONS: Flood Outlook StatementSouth Nation Watershed – Update #1

May 1, 2019

This statement is an update to the Flood Outlook statement issued April 24, 2019.

Weather Forecast:
Rainfall of 15 to 35 mm is forecasted for today, May 1, 2019.

Environmental Conditions:
Since April 24, SNC rain gauges have recorded approximately 10 to 20 mm of rain. Soil across the jurisdiction is saturated, and there is no snowpack remaining.

Water levels across the watershed have decreased and are returning to normal ranges. Levels in some parts of the jurisdiction remain above average for this time of year.

Risks:
Forecasted precipitation may increase water levels across the jurisdiction. Flooding may occur in low lying areas.

ACTION:
Residents are advised to stay away from rivers as the forecasted weather may rapidly increase river flows and banks might be unstable and slippery. Parents are encouraged to explain these dangers to their children.

Residents in flood prone or low-lying areas, historically susceptible to flooding, should also take the necessary precautions to protect their property, such as:

  • Ensuring sump pump is clear, in good working condition and has a backwater valve on it.
  • Portable generator and backup pump.
  • Ensuring downspouts are clear and the outlet is at least 3 m from the dwelling.
  • Removing or securing items that might float away as flows increase.
  • Removing valuable items from basements or lower floors that could be subject to flooding.
  • Keep emergency phone numbers handy.
  • Familiarize yourself with your municipality’s emergency preparedness plan.

Duration:
This statement is in effect until Wednesday, May 15, 2019.

SNC monitors the water levels and weather forecasts as part of the Flood Forecasting and Warning Program. Updates are provided as conditions change.

Please visit www.nation.on.ca for more information. To provide feedback with respect to changes in water related conditions please email waterwatch@nation.on.ca, posted on our Facebook (/SouthNationConservation) or Twitter (@SouthNationCA).

FOR MORE INFORMATION: Omar Kana’n, Water Resources Analyst,
613-551-9057, okanan@nation.on.ca.

FOR MEDIA INQUIRIES: John Mesman, Team Lead of Communications,
613-899-5341, jmesman@nation.on.ca.

FORWARDED TO: All Flood Forecasting and Warning Directory 

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