Watershed Conditions Statements
Rain forecast for Friday and Saturday is expected to cause levels to increase again.. Parks Canada staff had begun preparations for the opening of the Rideau Canal navigation season prior to the heavy rain last Monday. Dams that had been closed had to be re-opened to pass water through the system to bring levels down. The level on the Long Reach had begun to decline but will increase again due to rain that is forecast for Friday and Saturday. A widespread weather system is forecast to drop a two day total of 35 to 70 millimetres of rain on Eastern…
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Watershed Conditions Statements
May 04, 2017
Water Levels to Increase in Lower Ottawa River
Rain forecast for Friday and Saturday is expected to cause water levels to continue to rise through the weekend. This Flood Warning applies to areas around Lac Deschene, at Petrie Island and at Boise Village to the east of Cumberland. Another rain event is forecast for Friday and Saturday with a possible two-day total of 35 millimetres to as much as 70 mm. Increased water levels will occur whatever the total rainfall is. Levels could increase by 25 to 35 centimetres depending on timing, location and amount of rain. The rain is forecast to taper off on Sunday so a…
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Watershed Conditions Statements
Rain on Monday has pushed water levels in the Ottawa River above the peak reached last week. This Flood Warning is specific to areas around Lac Deschene, at Petrie Island and at Boise Village, east of Cumberland. A short-lived peak can be expected on Wednesday. Rain, possible on Thursday but probable for Friday and through the weekend, is expected to increase levels further. Peak elevation at Britannia last week was 59.924 metres above sea level. At 10:00 this morning, the level was 60 metres. Downstream of the Chaudiere Falls the peak level last week was 44.09 metres. The measurement this…
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Watershed Conditions Statements
May 02, 2017
Rain Brings Water Levels Up On Rideau
The rain event yesterday has caused water levels in the Rideau watershed to rise again. Water levels in the Rideau Valley had fallen close to historical average levels since the spring freshet peak on April 7. As much as 60 millimetres of rain on Monday has caused levels to increase again. Another 70 millimetres is forecast to start Thursday and continue through the weekend which can be expected to cause a further rise of water levels. Low-lying communities along the Long Reach of the Rideau between Kars and Kemptville can expect to see out of bank levels and it is…
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Watershed Conditions Statements
Rain forecast for the first week of May can be expected to cause water levels to rise significantly in the Ottawa River. Rainfall forecast for today could raise levels to what were reached last week. Additional rain forecast to fall this week can be expected to at least maintain levels and possibly cause further increases.around Lac Deschene, at Petrie Island and at Boise Village, east of Cumberland. Within the Rideau watershed, levels will increase but no flooding issues are expected at this time with the exception of Bobs and Christie Lakes which have continued to have high levels since the…
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Watershed Conditions Statements
April 21, 2017
High Waters in Lower Parts of Ottawa River Watershed
The rise of flood waters on the Ottawa River is slow but continuing and is approaching the 1:10 year flood frequency*. The slow rise of flood waters on the Ottawa River will continue today aided by runoff from the overnight rains. Levels had dropped yesterday on Lac Deschene but have risen again today. Downstream of Chaudiere Falls the rate of rise decreased slightly but that is likely to change with the impact of the rain. The locations at risk of flooding on the Ottawa River within the jurisdiction of the Rideau Valley Conservation Authority are communities around Lac Deschene (e.g.…
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Watershed Conditions Statements