![Super User](https://secure.gravatar.com/avatar/a20346a0570d2065354a0cde0a1131d0?s=100&default=https%3A%2F%2Fwww.rvca.ca%2Fcomponents%2Fcom_k2%2Fimages%2Fplaceholder%2Fuser.png)
Super User
SPRING OUTLOOK - With High Snowpack, Prepare for Spring Flooding Across the Rideau Valley
(WCS – R02/2023)
RIDEAU VALLEY, March 9, 2023 – The winter of 2022-23 is quickly coming to an end, and RVCA’s Flood Forecasting team is working closely with its municipal and agency partners to prepare for potential spring flooding. As discussed below, it is important to be prepared for possible flood conditions over the next few weeks as spring returns to the Rideau Valley watershed.
Current conditions:
- This winter has been unusually mild with some rain events and approximately 300 cm of snow fallen to date in the Ottawa area. The snowpack varies throughout the Rideau Valley Watershed, but in general the water content in the snow is near average for the upper and middle parts of the watershed and above average for the lower part of the watershed (Ottawa area).
- Due to the mild weather and rain throughout the winter, water levels on some upper watershed lakes are presently above normal for this time of year (i.e., Wolfe & Christie Lakes). Parks Canada staff who manage water levels for the Rideau Canal will closely monitor these water levels and have indicated that the levels are expected to rise in the upper watershed lakes as the snowpack begins to melt.
- The current short-term forecast indicates limited precipitation and seasonal temperatures (slightly above zero temperatures during the day and below zero at night); however, we know the daily temperature will begin to increase and there will likely be some rain as we move through March.
- 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’s information line at 311).
What does this mean for flood potential?
- Based solely on the fact we have above-average snow water content and above-normal water levels in some upper watershed lakes, there is potential for above-average flooding this spring across the Rideau Valley Watershed, especially in low lying areas which have flooded in the past.
- Precipitation and temperature are two other key factors influencing actual flood conditions as we move through March and into April, which staff will monitor closely.
- The short-term forecast suggests a slow melt with little precipitation, which is favourable for limited flooding for at least the first half of March.
With changing levels expected over the coming weeks, ice cover on lakes, ditches, local streams and rivers will continue to 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.
As the temperatures start to warm up, ice jams are possible in local streams and rivers, as flows could quickly increase before the ice can melt. Residents are advised to monitor their local waterbody closely for signs of ice jams as spring progresses. RVCA staff will be monitoring conditions, but we always welcome observations from watershed residents.
Potential flooding along roadways is also a concern due to current snow/ice buildup on roadside ditches and some roads.
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
More information including our Flood Contingency Plan and real-time water level and stream flow data can be found atwww.rvca.ca/watershed-conditions.
This watershed conditions statement is in effect until March 24, 2023 at 5 p.m. and may be updated at that time unless the forecast or conditions change.
-end-
More Information:
Contact: Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority
613-692-6804, 1-800-267-3504 ext. 1141
www.rvca.ca/watershed-conditions
"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.
North Grenville councillor elected RVCA board chair
MANOTICK, March 3, 2023 – North Grenville Councillor Kristin Strackerjan is the new board chair for the Rideau Valley Conservation Authority (RVCA).
Strackerjan was elected at the RVCA’s board meeting on Feb. 23. Anne Robinson, citizen representative for the City of Ottawa, was elected vice chair.
“My time on the RVCA board has been very interesting, and adding the responsibility of chair will allow me to be further engaged in other areas of discussion, such as at Conservation Ontario meetings,” Strackerjan said.
She noted that she lives in a high-growth area with many waterways intersecting with development.
“The conservation of land and ensuring that developments proceed with due consideration to science is more important than ever. Protecting our watershed and our green areas is paramount.”
Robinson said she is keen to take on the role of vice chair, having supported the conservation authority’s purpose for many years.
“The work of conservation authorities is vital to the health of our watersheds in Ontario and to our future,” said Robinson, who has been a board member since 2018. “I will do what I can and encourage others to do what they can to support and maintain what has been recognized throughout North America as a great watershed planning model.”
There were many new faces around the board table on Feb. 23, the first formal meeting of 2023 and the start of a new four-year board term following municipal elections last October.
Departing board chair Pieter Leenhouts brought extensive knowledge and a steady hand to the board during his four-year tenure as chair. Leenhouts was a dedicated board member, having participated as an Ottawa appointee since 2015 and serving as vice chair in 2018. The RVCA staff and board thank him for his service to conservation in the Rideau Valley watershed.
To find information about RVCA’s governance structure, board meetings and agendas visit www.rvca.ca/governance.
-30-
Watershed Report Card
ATR-January February 2023
FLOOD OUTLOOK - Elevated Water Levels Expected to Continue for Christie Lake and Tay River Region
(WCS – R01/2023)
January 12, 2023 – After gaining and losing a large amount of snow over the holiday season, the short-term forecast is calling for between 15 and 30 cm of snow starting Thursday, Jan. 12 through late Friday, Jan. 13.
Elevated water levels/flows are now declining across most of the watershed after above-average temperatures and precipitation caused a spike at the end of December and early January. But water levels in the upper watershed reservoir lakes, specifically Bobs and Christie Lake, are above average and continue to increase. The conditions are being monitored closely by Parks Canada staff.
A FLOOD OUTLOOK is now in effect for Christie Lake as the water levels are expected to remain high and may increase over the next month or so depending on the weather conditions. Residents on Christie Lake are advised to keep a close watch on water levels 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
- 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
Extreme caution should be exercised by everyone when near local waterbodies. Parents should inform their children of the risks and provide appropriate supervision. Pets should be leashed near all bodies of water.
Because of the above normal water level/flows across the watershed, localized ice jams and/or frazil ice formation may occur in areas of open water which can cause localized flooding.
This watershed conditions statement is in effect until Wednesday, February 1, 2023 at 5 PM or until an update has been issued.
-end-
"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.
WATER SAFETY STATEMENT - Water Safety Statement Extended Due To Prolonged Warming Trend and Forecasted Rainfall
(WCS – R10/2022)
December 30, 2022 – The Rideau Valley Conservation Authority is extending the Water Safety Statement issued on December 21, 2022 due to a prolonged warming trend and forecasted rainfall over the next few days.
Above zero temperatures are expected to continue late into next week, with forecasted rainfall of 20-30 mm through the weekend. These conditions will likely accelerate the release of the existing snowpack and will result in increased flows and water levels throughout the Rideau Valley watershed.
With rising water levels expected over the next few 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. Keep pets leashed near waterbodies, as well.
At this time, no significant flooding is anticipated, however residents adjacent to 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
- 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 Friday, January 6, 2023 at 5 PM or until an update has been issued
-end-
"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.
WATER SAFETY STATEMENT - Significant Precipitation Event Will Cause Increased Water Levels Across Rideau Valley Watershed
(WCS – R09/2022)
December 21, 2022 – Caution is advised as a major winter storm makes its way to the Rideau Valley this week. Environment Canada’s short-term weather forecast indicates precipitation will begin as rain or snow late Thursday, Dec. 22 before transitioning to rain on Friday. Rainfall amounts of up to 40 mm are forecasted for Friday before the temperature drops below zero. Falling temperatures will be accompanied by strong winds along with more snow.
Water levels and flows are generally low to average for this time of year across the Rideau Valley Watershed. Although no significant flooding is anticipated, water levels and flows are expected to increase in all waterways in the Rideau Valley Watershed in the coming days. Residents adjacent to 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
- 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
Extreme caution should be exercised by everyone when near local waterbodies. Parents should inform their children of the risks and provide appropriate supervision. Pets should be leashed near all bodies of water.
This watershed conditions statement is in effect until Monday, Dec. 26, 2022 at 5 PM or until an update has been issued.
-end-
More Information:
Brian Stratton, RVCA Manager Engineering Services
Rideau Valley Conservation Authority
613-692-6804, 1-800-267-3504 ext. 1141
www.rvca.ca/watershed-conditions
"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.