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Displaying items by tag: streamflow

WCS – R03/2021

March 8, 2021 –The winter of 2020-21 is quickly coming to an end. After a mild start, February brought cooler temperatures. The watershed saw a significant rain event in late December, followed by below normal precipitation in January and above normal precipitation in February. Current conditions recorded at several RVCA and Parks Canada snow course sites are indicating normal water content amounts in the snow for this time of year. In general, water levels on lakes and flows in the streams are presently below normal for this time of year.

The current short-term weather forecast indicates a warm week ahead with daytime high temperatures well above zero from Tuesday through at least next weekend and night-time low temperatures also above zero on Wednesday and Thursday. The forecast indicates some but no significant precipitation this week.

If the temperatures come as forecast, a significant amount of the snow is expected to melt across the Rideau Valley watershed which will make water levels and flows rise quickly and may result in flooding for low lying areas along all waterways, especially near small creeks and streams. Parks Canada staff who manage the water levels for the Rideau Canal have indicated that the levels in lakes are expected to rise in the upper watershed lakes as the snowpack begins to melt.

City of Ottawa crews have begun the annual ice removal program on the Rideau River between Rideau Falls and Bronson Avenue. Crews will work to keep the ice from reforming until the spring freshet occurs (for more information: City of Ottawa information at 311).

With the rising water levels that can be expected over the coming weeks, ice cover on lakes, ditches, local streams, and rivers will be unstable. Extreme caution should be exercised by everyone when near local waterbodies. Parents should inform their children of the risks and provide appropriate supervision. 

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

  • Ensuring sump pump is clear, in good working condition and has a backwater valve 
  • Ensuring easy access to a portable backup generator and pump
  • Ensuring downspouts are clear and the outlet is at least 3 metres from the dwelling 
  • Securing items that might float away as flows increase 
  • Removing valuable items from basements or lower floors that could be subject to flooding
  • Keeping emergency phone numbers handy
  • Familiarizing yourself with your municipality’s Emergency Preparedness Plan

This watershed conditions statement is in effect until March 31, 2021, at 5 p.m. and will be updated at that time unless the forecast or conditions change.

"Rideau Valley Conservation Authority is a partnership of municipalities within the Rideau Valley watershed created under the Conservation Authorities Act to deliver a range of programs in watershed management and natural resource conservation."

 RVCA Watershed Conditions Statements:

  • Water Safety – High flows, unstable banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
  • Flood Outlook – Early notice of the potential for flooding based on weather forecasts, calling for heavy rain, snow melt, high winds or other conditions that could lead to high runoff, cause ice jams and/or lakeshore flooding or erosion.
  • Flood Watch – Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individuals in flood prone areas should prepare.
  • Flood Warning – Flooding is imminent or already occurring in specific watercourses or municipalities.

March 25, 2021­ - Above normal temperatures in March have melted most of the snow across the Rideau Valley watershed. The snow melt was quite rapid at first causing water levels and flows to rise quickly in some areas. This was followed by a more gradual melt of the remaining snow. For the most part, water levels and flows are about normal for this time of year and are well below flood thresholds.    

The short-term forecast is calling for rainfall amounts of between 40 to 50 millimetres between Thursday and Sunday, with heaviest rain on Friday, and cooler temperatures but still above zero. If the rain comes as forecast, water levels and flows will increase again across the Rideau Valley Watershed. As such, an updated FLOOD OUTLOOK is in effect due the possibility of flooding for all low-lying areas along all waterways, especially near small creeks and streams. Parks Canada staff who manage the water levels for the Rideau Canal have indicated that the levels in the upper watershed lakes are currently below average and expected to rise but not to flood levels.

Further to the above, a FLOOD WATCH is in effect for the low-lying areas along Stevens Creek and Taylor Drain in the Village of North Gower. If the rain comes as forecast, water levels may be similar too, or possibly higher than, those already observed this spring.

With the rising water levels expected over the coming days, the remaining ice cover on lakes, ditches, local streams, and rivers will be unstable. In addition, ice cover in the rivers and streams may breakup as a result of warm temperatures and higher flows, increasing the risk of ice jams and associated overbank flooding. Extreme caution should be exercised by everyone when near local waterbodies. Parents should inform their children of the risks and provide appropriate supervision. 

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

  • Ensuring sump pump is clear, in good working condition and has a backwater valve 
  • Ensuring easy access to a portable backup generator and pump
  • Ensuring downspouts are clear and the outlet is at least 3 metres from the dwelling 
  • Securing items that might float away as flows increase 
  • Removing valuable items from basements or lower floors that could be subject to flooding
  • Keeping emergency phone numbers handy
  • Familiarizing yourself with your municipality’s Emergency Preparedness Plan

This watershed conditions statement is in effect until April 15, 2021, at 5 p.m. and will be updated at that time unless the forecast or conditions change.

(WCS-LW - 5/2021)
October 6, 2021 – Watershed conditions in the Rideau Valley Watershed have returned to “Normal’ under the Ontario Low Water Response Program.

With above average rainfall amounts across the watershed over the last month, stream flows and water levels have recovered from the previous low water status and are now above average for this time of year.

Parks Canada continues to closely monitor the water levels throughout the Rideau Canal system inside the Rideau Valley watershed. Water levels in the reservoir lakes, located in the upper reaches of the Rideau Valley watershed, are now near normal for this time of year. Rideau River flows downstream of Big Rideau Lake remain at minimum value. Water levels in the Rideau River below Smiths Falls are within navigable ranges for this time of year.

Conservation Authority staff continue to monitor conditions and communicate with water managers throughout the watershed. Updates to this message will be issued as conditions warrant.

More resources:

 -end-


More Information:
Contact: Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority

613-692-6804, 1-800-267-3504 ext. 1141

Rideau Valley Conservation Authority is a partnership of municipalities within the Rideau Valley watershed created under the Conservation Authorities Act to deliver a range of programs in watershed management and natural resource conservation.

RVCA Watershed Conditions Statements:

  • Water Safety – High flows, unstable banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
  • Flood Outlook – Early notice of the potential for flooding based on weather forecasts, calling for heavy rain, snow melt, high winds or other conditions that could lead to high runoff, cause ice jams and/or lakeshore flooding or erosion.
  • Flood Watch – Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individuals in flood prone areas should prepare.
  • Flood Warning – Flooding is imminent or already occurring in specific watercourses or municipalities.

 

(WCS - RO6/2021)
December 10, 2021 – Environment Canada is forecasting rainfall amounts of 20 to 40 mm starting the evening of Friday, Dec. 10 and continuing through Saturday night. This forecasted rainfall together with mild temperatures will melt snow and create runoff, causing all water levels and flows to increase throughout the Rideau Valley Watershed.

Because of a wet fall season, most water levels and flows are currently above normal. Although this rain and snow-melt event will not cause significant flooding, it could cause localized flooding in small watercourses, urban areas and ditches.  

The RVCA reminds the public to exercise extreme caution around all waterbodies and remind children about the dangers of playing near open water. Residents are reminded to make sure their sump pumps are in good working condition and to help reduce ponding by keeping ditches, culverts, and storm drains clear of obstructions. 

This watershed conditions statement is in effect until Friday, December 17, 2021 at 5 PM or until an update has been issued.

-end-


More Information:
Contact: Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority

613-692-6804, 1-800-267-3504 ext. 1141

Rideau Valley Conservation Authority is a partnership of municipalities within the Rideau Valley watershed created under the Conservation Authorities Act to deliver a range of programs in watershed management and natural resource conservation.

RVCA Watershed Conditions Statements:

  • Water Safety – High flows, unstable banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
  • Flood Outlook – Early notice of the potential for flooding based on weather forecasts, calling for heavy rain, snow melt, high winds or other conditions that could lead to high runoff, cause ice jams and/or lakeshore flooding or erosion.
  • Flood Watch – Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individuals in flood prone areas should prepare.
  • Flood Warning – Flooding is imminent or already occurring in specific watercourses or municipalities.

 

(WCS – R01/2022)
February 16, 2022 – Environment Canada is forecasting mild temperatures, with 15 to 25 mm of rain starting late today through Thursday afternoon followed by much cooler temperatures and possible snowfall accumulations of 10 to 20 cm of snow before mid-day on Friday. This weather event will likely result in elevated water runoff to all waterways because of snow melt and high rainfall amounts before freezing up again.

Although no significant flooding is anticipated, water levels and flows are expected to increase in all waterways in the Rideau Valley Watershed. Depending on how much snow melts and rain falls, residents who are adjacent to the smaller creeks and streams are advised to keep a close watch on water levels and flows and should take the necessary precautions to protect their property, such as:

  • Ensuring sump pump is clear, in good working condition and has a backwater valve
  • Ensuring easy access to a portable backup generator and pump

With the expected temperature changes and increase in water levels and flows in the coming days, ice cover on lakes, ditches, local streams and rivers will be unstable. Extreme caution should be exercised by everyone when near local waterbodies. Parents should inform their children of the risks and provide appropriate supervision.

This watershed conditions statement is in effect until Wednesday February 23, 2022 at 5 PM or until an update has been issued.

-end-


More Information:
Contact: Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority

613-692-6804, 1-800-267-3504 ext. 1141

Rideau Valley Conservation Authority is a partnership of municipalities within the Rideau Valley watershed created under the Conservation Authorities Act to deliver a range of programs in watershed management and natural resource conservation.

RVCA Watershed Conditions Statements:

  • Water Safety – High flows, unstable banks, melting ice or other factors that could be dangerous for recreational users such as anglers, canoeists, hikers, children, pets, etc. Flooding is not expected.
  • Flood Outlook – Early notice of the potential for flooding based on weather forecasts, calling for heavy rain, snow melt, high winds or other conditions that could lead to high runoff, cause ice jams and/or lakeshore flooding or erosion.
  • Flood Watch – Flooding is possible in specific watercourses or municipalities. Municipalities, emergency services and individuals in flood prone areas should prepare.
  • Flood Warning – Flooding is imminent or already occurring in specific watercourses or municipalities.

 

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Contact Us

Address:
Rideau Valley Conservation Authority
3889 Rideau Valley Drive
Manotick, Ontario K4M 1A5

Phone:
613-692-3571, 1-800-267-3504

Email:

Hours:

Regular Hours: Monday to Friday, 8:30 a.m. to 4:30 p.m.

Member of: conservation ontario