Parks Canada's water management team continues to actively monitor water levels and flows, and weather forecasts across the Rideau Canal. These factors are used to determine dam operations on a daily basis for the Rideau Canal.

Water management on the Rideau Canal is the regulation of water levels and flows to:

  • permit safe boating
  • help mitigate flooding
  • provide water for recreational activities
  • protect fish and wildlife habitat
  • help maintain water quality
  • generate hydro-electric power

When establishing water flows and levels, Canal staff must weigh the risks and requirements of these various uses to arrive at optimal levels. They must also take into account variables over which no control is possible such as topography and allow for variations in climatic conditions (rain, snowfall, temperature, etc.) based upon records of trends, extremes and averages. Daily readings from automatic water level recording stations and from streamflow and precipitation gauges are evaluated at Canal headquarters to guide the engineers' decisions about dam settings, levels and flows. Directions are then communicated to operations staff in each of the two administrative areas who make the agreed changes at the dams.

For more information regarding watershed status, please visit your local conservation authority website:

For other areas along the Rideau Canal corridor, please visit:

September 6, 2018

Weather

The current two week forecast is calling for approximately 15 mm of rainfall. 

A Level 1 low water condition continues to be in effect for the Rideau Valley Conservation Authority and the Cataraqui Conservation Authority.

Outlook  

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

The Cataraqui Lakes remain below average and without persistent rainfall will likely have continued water level declines. Forecasted draft

Tay River

Bobs Lakes is below average for this time of year. Outflows from Bobs Lake flows may be increased this week. Any increase in flow rates will increase water levels on Christie Lake and increase the flow rate down the Tay River.  

Rideau River

Wolfe Lake is near average level for this time of year. Outflows from Wolfe Lake may be increased this week or next week to reduce the rate of decline on Upper Rideau Lake which is below average for this time of year. Big Rideau is below long term average. Levels in the river from Smiths Falls to Ottawa all remain in navigation range.  

July 9, 2018

Weather

Rainfall amounts for May and June have been below normal. The 14 day forecast suggests continued high temperatures with little to no rainfall in the first six days and some potential rainfall in the 7 to fourteen day range. 

Outlook 

Flows on the Upper Tay River are receding. The inflows are receding across the system and as a result water levels are declining. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

The lack of rainfall and high temperatures is resulting in continued water level declines on the Cataraqui Lakes. Based on the current forecast, the boat draft on the Cataraqui Lakes will decrease.  Forecasted draft

Tay River

Bobs Lakes is near average level for this time of year. Outflows from Bobs Lake will be increased this week which will bring up the water level on Christie Lake and increase the flow rate down the Tay River. 

Rideau River

Wolfe Lake is near average level for this time of year. Outflows will be increased from Wolfe Lake in order to reduce the rate of decline on Upper Rideau Lake which is below average for this time of year. Big Rideau is near long term average. Levels in the river from Smiths Falls to Ottawa all remain in navigation range. 

May 10, 2018

Weather

The weather forecast indicates no rain for the next 5 days. 

Outlook 

Flows on the Upper Tay River are receding. The inflows are receding across the system and as a result water levels are declining. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Most lakes are slightly close to average, levelling off and /or declining.  

Tay River

Bobs Lake and Christie Lake levels are declining. Inflows in this area are receding. The Rideau Water Management team will be closely monitoring the changing conditions in this area. Flows on the lower Tay River continue to decrease.

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake water levels are declining. Flows are declining from Smiths Falls to Hogs Back. 

May 7, 2018

Weather

The total amount of rain expected for the next 5 days is around 5 mm. 

Outlook 

Flows on the Upper Tay River have crested and started to recede. The inflows are receding across the system and as a result water levels are beginning to decrease.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Most lakes are above average and declining. 

Tay River

Bobs Lake and Christie Lake levels appear to have peaked and beginning to decline. Inflows in this area appear to be declining. The Rideau Water Management team will be closely monitoring the changing conditions in this area. Flows on the lower Tay River continue to decrease. 

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake water levels are currently receding. Flows are declining from Smiths Falls to Hogs Back.

May 6, 2018

Weather

The total amount of rain expected for the next 5 days is around 10 mm.

Outlook 

Flows on the Upper Tay River appear to crest and likely will recede. The inflows are receding across the system and as a result water levels are beginning to decrease.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes have peaked and appear to be declining. 

Tay River

Bobs Lake and Christie Lake levels appear to have peaked and beginning to decline. Inflows in this area appear to be declining. The Rideau Water Management team will be closely monitoring the changing conditions in this area. Flows on the lower Tay River continue to decrease.

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake water levels are currently receding. Flows are declining from Smiths Falls to Hogs Back. 

May 5, 2018

Weather

Yesterday’s rainfall event yielded approximately 2 mm. The total amount of rain expected for the next 5 days is less than 5 mm.  

Outlook 

Flows on the Upper Tay River appear to be levelling off. The inflows are cresting and/or receding across the system and as a result water levels are beginning to decrease.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes have peaked and appear to be declining.

Tay River

Bobs Lake and Christie Lake levels appear to have peaked and remain stable. Inflows in this area appear to be cresting or declining. The Rideau Water Management team will be closely monitoring the changing conditions in this area. Flows on the lower Tay River continue to decrease.

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake water levels are currently receding or levelling off. Flows are declining from Smiths Falls to Hogs Back. 

May 4, 2018

Weather

Yesterday’s rainfall event yielded approximately 5 mm. Today's forecast suggests rainfall amounts ranging from 5 to 20 mm with a potential for thunderstorms.  

Outlook 

Flows on the Upper Tay River appear to be levelling off and subject to change depending on the received rainfall.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes have peaked and appear to be declining. 

Tay River

Bobs Lake appears to have peaked and operations are conducted to reduce outflows with a goal of having Christie Lake crest. Inflows in this area appear to be cresting or declining and remain very sensitive to any rainfall. Flows on the lower Tay River continue to decrease.

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake water levels are currently receding or levelling off. Flows are likely to decline from Smiths Falls to Hogs Back. 

May 3, 2018

Weather

The 5 day forecast suggests precipitation of 15 mm.  

Outlook 

Lake levels will respond to the rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to increase in the Upper Tay Watershed.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels and flows are declining and may level off or increase with forecasted rain. 

Tay River

Bobs Lake and Christie Lake levels are above average and overfull. Bob Lake levels are levelling off. Christie Lake levels are increasing. The lake levels are expected to increase depending on the forecasted rain amounts. The levels on both lakes will continue to be monitored. The Rideau Valley Conservation Authority has issued a Flood Warning for this area. Flows on the lower Tay River will likely increase. 

Rideau River

All lake levels are leveling off and flows along the Rideau River are expected to be sustained from Smiths Falls to Hogs Back. Levels on the Long Reach are declining and outflows are maximized. Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations. 

May 2, 2018

Weather

The 5 day forecast suggests precipitation of 25 mm with most of the rainfall coming mid week.   

Outlook 

Lake levels will respond to the rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to increase in the Upper Tay Watershed. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels and flows are declining and may level off or increase with forecasted rain.

Tay River

Bobs Lake and Christie Lake levels are above average, overfull and increasing.  The lake levels are expected to increase depending on the forecasted rain amounts. Outflows from Bob Lake will be increased today in order to maximise the storage available for the upcoming rain.  The levels on both lakes will continue to be monitored. The Rideau Valley Conservation Authority has issued a Flood Warning for this area.  Flows on the lower Tay River will likely increase. 

Rideau River

All lake levels are leveling off and flows along the Rideau River are expected to be sustained from Smiths Falls to Hogs Back. Levels on the Long Reach are declining and outflows are maximized.  Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations. 

May 1, 2018

Weather

The 5 day forecast suggests precipitation of 30 mm with most of the rainfall coming mid week. 

Outlook 

Lake levels will respond to the rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to increase in the Upper Tay Watershed. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels and flows are sustained and will increase with forecasted rain.

Tay River

Bobs Lake and Christie Lake levels are above average, overfull and increasing. The lake levels are expected to increase depending on the forecasted rain amounts. The levels on both lakes will continue to be monitored. The Rideau Valley Conservation Authority has issued a Flood Warning for this area. Flows on the lower Tay River have picked up due to the rainfall and will likely continue to increase.  

Rideau River

All lake levels are leveling off and flows along the Rideau River are expected to be sustained from Smiths Falls to Hogs Back. Levels on the Long Reach are leveling off. Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations. 

April 30, 2018

Weather

Continuous rainfall amounts for the past five days varied across the watershed from 30 to 55 mm with the highest amounts recorded in the Bobs Lake area. The 5 day forecast suggests precipitation of 30 mm with most of the rainfall coming mid week. 

Outlook 

Lake levels will respond to the rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to continue to increase in the Upper Tay Watershed.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels and flows are sustained and will increase with forecasted rain. 

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing and will continue to do so due to the received rain and the additional rain in the forecast. Both Christie Lake and Bobs Lake are now overfull and lake levels will continue to rise at both locations. The levels on both lakes will continue to be monitored and operations are conducted in response to the received and the forecasted rain runoff. The Rideau Valley Conservation Authority has issued a Flood Warning for this area. Flows on the lower Tay River have picked up due to the rainfall and will likely continue to increase.   

Rideau River

All lake levels are expected to increase, flows along the Rideau River are expected to increase from Smiths Falls to Hogs Back. Levels on the Long Reach will continue to increase today due to increase in local inflows. Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations.

April 29, 2018

Weather

Rainfall amounts varied across the watershed from 5 to 15 mm with the highest amounts recorded in the Bobs Lake area.  The forecast for today has additional 5 mm or rainfall.  The 5 day forecast now has precipitation amounts ranging from 15 mm to 25 mm with most of the rainfall coming mid week.

Outlook 

Lake levels will respond to the rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to continue to increase in the Upper Tay Watershed.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels and flows are sustained and will increase with forecasted rain. 

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing and will continue to do so due to the ongoing rain and the additional rain in the forecast. Both Christie Lake and Bobs Lake are now overfull and lake levels will continue to rise at both locations.   The levels on both lakes will continue to be monitored and operations are conducted in response to the received and the forecasted runoff. The Rideau Valley Conservation Authority has issued a Flood Warning for this area.  Flows on the lower Tay River have picked up due to the recent rainfall and will likely continue to increase.   

Rideau River

All lake levels are expected to increase, flows along the Rideau River are expected to increase from Smiths Falls to Hogs Back. Levels on the Long Reach will continue to increase today due to increase in local inflows.  Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations.  

April 28, 2018

Weather

Rainfall amounts last night varied from 10 to 20 mm across the watersheds this rainfall was largely unforecasted. Late in the day there was a significant shift in the forecast for the Cataraqui and Rideau watersheds. The 5 day forecast jumped from about 10 mm to 20 mm with all of the rainfall to come over Saturday and Sunday.

Outlook 

Lake levels will respond to the extra rain and flows in the Rideau River and Tay River are expected to increase. Levels are expected to continue to increase in the Upper Tay Watershed.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels are anticipated to increase with yesterday's rainfall and the additional rainfall in the forecast.  

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing and will continue to do so due to last nights rain and the additional rain in the forecast. Both Christie Lake and Bobs Lake are at or very close to full level. The levels on both lakes will continue to be monitored and the balancing of the high water will continue. Flows on the lower Tay River will likely level and then begin to recede. 

Rideau River

All lake levels are expected to increase, flows along the Rideau River are expected to increase from Smiths Falls to Hogs Back. A slow increase in flow is likely in the lower Rideau throughout the day. Levels on the Long Reach had begun to decrease but will raise again with the received and forecasted rainfall. Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations.  

April 27, 2018

Weather

The 5 day forecast suggests about 10 mm precipitation and continued temperatures above 0°C.

Outlook 

In the short term water levels and flows are likely to stabilize or slightly decrease. If the rainfall amounts stay close to forecast there should be a general decline in stream flows. The exception to above will be the Upper Tay Watershed. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lakes are anticipated to begin levelling or decrease in level. 

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing and will continue to do so due to the rain earlier in the week. Both Christie Lake and Bobs Lake are at or very close to full level. The levels on both lakes will continue to be monitored and the balancing of the high water will commence. Flows on the lower Tay River will likely level and then begin to recede

Rideau River

Wolfe Lake and Upper Rideau Lake appear to be levelling off while Big Rideau Lake appears to have peaked and is beginning to decline. Flows along the Rideau River are expected to decrease from Smiths Falls to Burritts Rapids. A slow increase in flow is likely in the lower Rideau throughout the day. Levels on the Long Reach are increasing slowly due to the recent precipitation. Levels in the Hogs Back Reach will continue to increase today. Water levels in the Rideau River reaches can be expected to still undergo significant fluctuations. 

April 26, 2018

Weather

The 5 day forecast suggests about 10 mm precipitation and continued temperatures above 0°C.

Outlook 

Rainfall amounts yesterday varied from 10 to 25 mm with the highest amounts being recorded in the Bobs Lake area.

In the short term water levels and flows are likely to stabilize or slightly decrease. If the rainfall amounts stay close to forecast there should be a general decline in stream flows. The exception to above will be the Upper Tay Watershed. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

Lake levels are anticipated to slowly increase over the day.

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing and will continue to do so due to the yesterday’s rain. Both Christie Lake and Bobs Lake are at or very close to full level. The levels on both lakes will continue to be monitored and the balancing of the high water will commence. Flows on the lower Tay River have levelled off and are expected to increase marginally before turning receding again. 

Rideau River

Big Rideau Lake, Upper Rideau Lake and Wolfe Lake all increased with yesterday’s rainfall. Flows along the Rideau River have either levelled off or are rising slowly. Levels on the Long Reach have levelled off as a result of the rain and increased inflows from the tributaries. The raising of the Hogs Back reach will begin today.

April 25, 2018

Weather

The 5 day forecast suggests about 10-15 mm precipitation with continued temperatures above zero by the beginning of next week. 

Outlook 

The 24 hour precipitation totals are below 5 mm. The current forecast suggest the water levels and flow will increase.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year and are levelling off. Opinicon Lake levels are above the average and declining.  

Tay River

Bobs Lake and Christie Lake levels are high and continue to increase.  Levels on both lakes are subject to further increase due to the rainfall.  Flows on the lower Tay River are declining but are expected to increase with the rainfall.    

Rideau River

Wolfe Lake, Upper Rideau Lake and Big Rideau Lake levels are declining.  Flows are generally declining from Merrickville down to Hogs Back river reaches.  Water levels on the Long Island reach water levels are declining.   

April 24, 2018

Weather

The 5 day forecast suggests about 25 mm precipitation with continued temperatures above zero by the beginning of next week. 

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. Most of snow has receded across the Cataraqui and Rideau Watershed. The current forecast suggest the water levels and flow will increase. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year and are levelling off. Opinicon Lake levels are above the average and declining. 

Tay River

Bobs Lake and Christie Lake levels are high and continue to increase. Levels on both lakes are subject to further increase due to the forecasted rainfall. Flows on the lower Tay River are declining but are expected to increase with the forecasted rainfall. 

Rideau River

Wolfe Lake, Upper Rideau Lake and Big Rideau Lake levels are currently levelling off. Flows are generally beginning to decline from Merrickville down to Hogs Back river reaches. Water levels on the Long Island reach remain high and are declining. 

April 23, 2018

Weather

The 5 day forecast suggests about 25 mm precipitation with continued temperatures above zero by the beginning of next week. 

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. Most of snow has receded across the Cataraqui and Rideau Watershed. Snow still remains in the wooded areas of the Upper Tay watershed. The current forecast suggest the water levels and flow will increase. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are close to the average water levels for this time of year and are levelling off. Opinicon Lake levels are above the average and declining. Sand Lake levels are below average and increasing. 

Tay River

Bobs Lake and Christie Lake levels are high and continue to increase. The snow from last week’s event remains in the watersheds of Christie Lake and Bobs Lake. Levels on both lakes are subject to further increase due to inflows sustained by current melt and the forecasted rainfall. Flows on the lower Tay River are declining but are expected to increase with the forecasted rainfall. 

Rideau River

Wolfe Lake, Upper Rideau Lake and Big Rideau Lake levels are currently levelling off. Flows are generally beginning to decline from Merrickville down to Hogs Back river reaches. Water levels on the Long Island reach remain high and are declining. 

April 20, 2018

Weather

The 5 day forecast suggests no precipitation with temperatures into the double digits by the end of the weekend. Night time temperatures will tend to be above zero by the beginning of next week.

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations due to snow melt.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are close to the average water levels for this time of year and increasing. Opinicon Lake and Colonel by Lake levels are above average for this time of the year and increasing. Levels on lakes are anticipated to increase due to the snow melt.

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing. The snow from last week’s event continues to persist in areas upstream of Christie Lake and Bobs Lake. Heading towards Perth the snow has receded by a small margin but not as significantly as observed in the middle and lower Rideau River sections. Flows on the Tay River are currently levelling off but are expected to increase based on snow melt.

Rideau River

Upper Rideau Lake and Wolfe Lake water levels are currently receding or levelling off. Big Rideau Lake levels continue to increase as a result of increased inflows from the Tay River. The upcoming snow melt is expected increase water levels on all the lakes. The river reaches between Smiths Falls and Long Island are currently subject to operations in response to the increased flows generated by local melt and runoff. Water levels on the Long Reach remain high and are expected increase with the expected snow melt.

April 19, 2018

Weather

The 5 day forecast suggests no precipitation. 

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are close to the average water levels for this time of year and increasing. Opinicon Lake and Colonel by Lake levels are above average for this time of the year and increasing. 

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing.   

Rideau River

Upper Rideau Lake and Big Rideau Lake levels are above average and levelling off. Wolfe Lake levels are above average and increasing. The river reaches between Smiths Falls and Long Island are currently subject to operations in response to the increased flows generated by local melt and runoff. The flows on the Rideau River are increasing. 

April 18, 2018

Weather

The 5 day forecast suggests low amounts of precipitation.

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year and increasing. Opinicon Lake and Colonel by Lake levels are above average for this time of the year and increasing. 

Tay River

Bobs Lake and Christie Lake levels are above average and are increasing.  

Rideau River

Upper Rideau Lake and Big Rideau Lake levels are above average and levelling off. Wolfe Lake levels are above average and increasing. The river reaches between Smiths Falls and Long Island are currently subject to operations in response to the increased flows generated by local melt and runoff. The flows on the Rideau River are increasing.

April 17, 2018

Weather

The 7 day forecast suggests small amounts of precipitation reaching 5 mm of rain. 

Outlook 

The recent event amounted to close to 80 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year and increasing. Colonel by Lake levels are above average for this time of the year and increasing. 

Tay River

Bobs Lake level is on the average and Christie Lake level is above average and are increasing.

Rideau River

Upper Rideau Lake level is above average and Big Rideau Lake is close to average for this time of the year and increasing. Wolfe Lake levels are above average and increasing. The river reaches between Smiths Falls and Long Island are currently subject to operations in anticipation for the increased flows generated by local melt and runoff in response to rain. The flows on the River are increasing. 

April 16, 2018

Weather

The 2 day forecast suggests additional amounts of precipitation reaching 35 mm of rain.

Outlook 

The recent event amounted to close to 60 mm of mixed precipitation with some solid accumulation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year. Colonel by Lake levels are on average for this time of the year. The outflows are increasing. 

Tay River

Bobs Lake level is below the average and Christie Lake level is above average.  The outflows are increased. 

Rideau River

Upper Rideau Lake level is above average and Big Rideau Lake is close to average for this time of the year. Wolfe Lake levels are above average. The river reaches between Smiths Falls and Long Island are currently subject to operations in anticipation for the increased flows generated by rain runoff. The flows on the River are increasing. 

April 13, 2018

Weather

The 5 day forecast suggests significant amounts of precipitation reaching 100 mm of rain 

Outlook 

The recent rain amounted to an average of 10 mm of precipitation across watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year. Colonel by Lake levels are on average for this time of the year. The outflows are increasing. 

Tay River

Bobs Lake level is below the average and Christie Lake level is above average. Bobs lake outflows are increased. 

Rideau River

Upper Rideau and Big Rideau Lakes are close to average for this time of the year. Wolfe Lake levels are above average. The river reaches between Smiths Falls and Long Island are currently subject to operations in anticipation for the increased flows generated by rain runoff. The flows on the River are increasing. 

April 12, 2018

Weather

The 7 day forecast suggests significant amounts of precipitation reaching 90 mm of rain 

Outlook 

The recent snow and rain amounted to an average of 11 mm of precipitation across the watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are below the average water levels for this time of year. The outflows are increasing. 

Tay River

Bobs Lake level is below the average and Christie Lake level is above average. Bobs lake outflows are increased. 

Rideau River

Upper Rideau and Big Rideau Lakes are on average for this time of the year. Wolfe Lake levels are above average. The river reaches between Smiths Falls and Long Island are currently subject to operations in anticipation for the increased flows generated by rain runoff. The flows on the River are increasing. 

April 9, 2018

Weather

The 7 day forecast suggests various amounts of precipitation potentially reaching the totals of 60 mm of rain and air temperatures close to  0°C at night.

Outlook 

The recent snow and rain amounted to an average of 11 mm of precipitation across the watersheds resulting in increased flows and water levels at most locations. The current forecast indicates that water levels and outflows will continue to increase at most locations.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are near the average water levels for this time of year. The outflows are increasing. 

Tay River

Bobs Lake level and Christie Lake level are below average. Bobs lake outflows are low for this time of year.  

Rideau River

Wolfe, Upper Rideau and Big Rideau Lakes water levels are above average for this time of the year. The river reaches between Smiths Falls and Long Island are currently at seasonal levels.

April 3, 2018

Weather

The 7 day forecast suggests various amounts of precipitation ranging from 20 to 35 mm of rain and wet snow and temperatures below  0°C at night.

Outlook 

The snowpack is below average. The current conditions indicate that water levels and outflows will increase at most locations. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are close to the average water levels for this time of year and are increasing. The outflows are increasing. 

Tay River

Bobs Lake level is close to the average and Christie Lake level is below average. Bobs lake outflows are low for this time of year. 

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are increasing and outflows have been reduced significantly. The river reaches between Smiths Falls and Long Island are currently at seasonal levels. Flows on the River are increasing. 

March 26, 2018

Weather

The total amounts of precipitation in March have been less than normal resulting in lower than average snow pack for this time of the year. The 7 day forecast suggests various amounts of precipitation around 14 mm of rain and temperatures below  0°C at night in northern areas.

Outlook 

The snowpack is present and is below average. The current water operations for filling the reservoirs continue to reduce the outflows from the reservoirs based on the projected runoff from melting snow in the watershed and below normal precipitation in the month of March. 

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are close to the average water levels for this time of year and are levelling off. The outflows are reduced.  

Tay River

Bobs Lake level is close to the average and Christie Lake level is below average. Bobs lake outflows are low for this time of year.  

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are declining and outflows have been reduced significantly. The river reaches between Smiths Falls and Long Island are currently at seasonal levels. Flows on the River are declining.

March 19, 2018

Weather

Since late February precipitation amounts have been less than normal resulting in lower than average snow pack for this time of the year. The 14 day forecast suggest dry conditions will continue with temperatures below average and staying below 0°C overnight.

Outlook 

The snowpack is present and is below average. The current water operations for filling the reservoirs have begun to reduce the outflows from the reservoirs based on the projected runoff from melting snow in the watershed and below normal precipitation in the month of March.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are above average water levels for this time of year and are levelling off. Colonel By Lake water level is on average for this time of the year.  

Tay River

Bobs Lake level and Christie Lake level are above average. Bobs Lake outflows are reduced. 

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Long Island are currently at seasonal levels.  Flows on the River are declining.

February 26, 2018

Weather

The weather forecast is predicting no significant precipitation events over the next 7 days but with positive day temperatures and below 0°C at night. 

Outlook 

Due to the significant total amounts of rain and localized snowmelt, water levels and outflows continue to increase. The snowpack is below average for this time of the year. The current warm temperatures indicate that the trend in water levels and outflows will be sustained.

The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are above average water levels for this time of year and increasing. 

Tay River

Bobs Lake level and Christie Lake level are above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the recent weather conditions. 

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels. Flows on the River are expected to peak soon.

February 23, 2018

Weather

The weather forecast is predicting an additional 5 mm precipitation event over the next 36 hours with positive day temperatures and below 0°C at night. 

Outlook 

Due to the recent weather conditions, significant total amounts of rain have resulted in local snowmelt with localized impact on the watersheds. The current forecast indicates that water levels and outflows will increase at most locations. The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority.

Cataraqui River

All lakes are above average water levels for this time of year and increasing. 

Tay River

Bobs Lake level and Christie Lake level are above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the recent weather conditions. 

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels. Flows on the River are expected to peak soon.

February 22, 2018

Weather

The rainfall occurring over the past 3 days resulted in total precipitation amounts ranging from 25-30 mm. The weather forecast is predicting an additional 5 mm precipitation event over the next 36 hours with positive day temperatures and below 0°C at night. 

Outlook 

Due to the recent weather conditions, significant total amounts of rain have resulted in local snowmelt with localized impact on the watersheds. The current forecast indicates that water levels and outflows will increase at most locations. The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority.

Cataraqui River

All lakes are above average water levels for this time of year and increasing.

Tay River

Bobs Lake level and Christie Lake level are above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the recent weather conditions.

Rideau River

Upper Rideau and Big Rideau Lakes are above average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels.  Flows on the River are increasing and expected to peak soon.

February 21, 2018

Weather

The rainfall occurring over past 24 hours resulted in total precipitation amounts ranging from 10-20 mm. The weather forecast is predicting an additional 5 mm precipitation event on Wednesday with day time temperatures declining and staying below 0°C at night. Additional small of amounts of rain and snow are forecasted over the next few days.  

Outlook 

Due to the recent weather conditions, significant total amounts of rain of 30 mm have resulted in local snowmelt with localized impact on the watersheds. The current conditions indicate that water levels and outflows will continue to increase at most locations. The Rideau Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority.

Cataraqui River

All lakes are close to the average water levels for this time of year and are increasing.

Tay River

Bobs Lake is close to the average water level for this time of year. Christie Lake level is above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the rainfall. 

Rideau River

Upper Rideau and Big Rideau Lakes are close to the average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels.  Flows on the River are increasing.

February 20, 2018

Weather

The rainfall over past 24 hours resulted in total precipitation amounts close to 10 mm. The weather forecast is predicting an additional 20 to 30 mm precipitation through Tuesday and Wednesday with day time temperatures reaching double digits and remaining above 0°C at night. 

Outlook 

The current forecast may result in local snowmelt and snowmelt runoff greatly impacting the watershed response. The current forecast indicates that water levels and outflows will increase at most locations. The Rideau Canal Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority.  

Cataraqui River

All lakes are at average water levels for this time of year, leveling off and increasing. 

Tay River

Bobs Lake is at average water level for this time of year. Christie Lake level is above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the warmer temperatures and rainfall. 

Rideau River

Upper Rideau and Big Rideau Lakes are at average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels. Flows on the River are increasing.

February 19, 2018

Weather

The weather forecast for early this week has been confirmed for a 50 to 60 mm precipitation event across Monday, Tuesday and Wednesday with day time temperatures reaching double digits and remaining above 0°C at night. 

Outlook 

The current forecast may result in local snowmelt and snowmelt runoff greatly impacting the watershed response. The current forecast indicates that water levels and outflows will increase at most locations. The Rideau Canal Water Management team will be actively monitoring the changing conditions. Any watershed condition updates will be released by your Conservation Authority.  

Cataraqui River

All lakes are at average water levels for this time of year and declining.

Tay River

Bobs Lake is at average water level for this time of year. Christie Lake level is above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the warmer temperatures and rainfall. 

Rideau River

Upper Rideau and Big Rideau Lakes are at average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels.   

February 16, 2018

Weather

The weather forecast for early next week is changing significantly from day to day. A 30 to 45 mm precipitation event is forecasted across Monday, Tuesday and Wednesday with day time temperatures reaching double digits and remaining above 0°C  at night. 

Outlook 

Precipitation and warm temperatures will result in snowmelt and runoff and thus impact the watershed response. The current forecast indicates that water levels and outflows will increase at most locations. The Rideau Canal Water Management team will be active and the changing conditions will be closely monitored. Any watershed conditions updates will be released by your Conservation Authority. 

Cataraqui River

All lakes are at average water levels for this time of year. 

Tay River

Bobs Lake is at average water level for this time of year. Christie Lake level is above average. Bobs Lake outflows may be reduced depending on the response of the watershed to the warmer temperatures and rainfall. 

Rideau River

Upper Rideau and Big Rideau Lakes are at average water levels for this time of the year. Wolfe Lake levels are high and outflows are maximized. The river reaches between Smiths Falls and Hoggs Back are currently at seasonal levels. 

May 10, 2017

Weather

The month of April was wetter than normal this year with 138-148 mm falling across the Rideau Canal area versus an average monthly rainfall of 74-78 mm.  Significant rainfall events in this first week of May have resulted in total precipitation amounts of about 100 mm which have further increased water levels and flows across the Rideau Canal.  Comparatively, the average rainfall for the entire month of May across the Rideau Canal is 80 mm.  Both the Rideau Valley Conservation Authority and the Cataraqui Region Conservation Authority have issued Flood Warnings.  Please check the website of your local conservation authority or the Ontario Ministry of Natural Resources and Forestry for the most up to date watershed conditions.  The weather forecast suggests that there will be no significant amounts of rain this week. 

Cataraqui River

Lakes from Kingston Mills Lock Station to Newboro Lock Station are all in flood stage.  Levels are predicted to increase and then flatten out over the next several days.

Tay River

Bobs Lake will see continued rising water levels, as will Christie Lake.  Tay River appears to be approaching its peak flow. Flows and levels through Perth will continue to increase.

Rideau River

Wolfe Lake, Upper Rideau and Big Rideau are overfull. Outflow from Big Rideau has been maximized.  Upper and middle sections of the Rideau will peak in the next several days.  Lower Rideau is currently near its peak. 

May 5, 2017

Weather 

Rainfall over the last week of April combined with a significant rainfall event early this week have resulted in total precipitation amounts ranging from 60-70 mm over that time period which have increased water levels and flows across the Rideau Canal. Currently Environment Canada has issued a Public Weather Alert for Southern Ontario as another rain event, that began on Thursday and will continue into the weekend, will bring an additional 40-70 mm to the area. Comparatively, the average rainfall for the entire month of May across the Rideau Canal is 80 mm. Environment Canada warns that “with the ground already saturated there is potential for local flooding”. Both the Rideau Valley Conservation Authority and the Cataraqui Region Conservation Authority have issued Flood Warnings. Please check the website of your local conservation authority or the Ontario Ministry of Natural Resources and Forestry for the most up to date watershed conditions.  

Cataraqui River 

Lakes from Kingston Mills Lock Station to Newboro Lock Station are all in flood stage. Levels are predicted to increase with the continued rainfall. Dams at Davis and Upper Brewers are completely open. 

Tay River 

Quickly rising levels on Bobs Lake required a log pull. This will result in an increase on Christie Lake. All logs are out of the dam at Beverages. Tay River flows will continue to increase and Beverages levels will increase due to the rain. Flows and levels through Perth will continue to increase due to the rain. 

Rideau River  

Wolfe Lake, Upper Rideau and Big Rideau are overfull. Outflow from Big Rideau has been maximized. Flows and levels are expected to increase down the Rideau River due to the rain.  

Watershed conditions

The Rideau Canal works with local conservation authorities, municipalities and the Ministry of Natural Resources to ensure that accurate water shed information is relayed to the public.
 
For up to date warnings and watches with regards to water levels in your region please click on the following links:

Visit Flood Ready for more information on general flood preparation. Locally, people are encouraged to contact their local municipal offices for any assistance they can provide with regard to flood mitigation, i.e. emergency services, sand bags, etc.