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February 18, 2021

Neighbourhood Flood Maps

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Within the RVCA’s regulated floodplainstaff have identified a number of Flood Vulnerable Areas throughout the watershed where flood events may have an impact on nearby properties. (See watershed map and table).

A series of new Neighbourhood Flood Maps for 20 vulnerable City of Ottawa communities along the Ottawa and Rideau Rivers shows the potential extent of flooding for 1:2, 1:5, 1:10, 1:20, 1:50 and 1:100 year return period floods for these neighbourhoods. 

NOTE: These maps are for informational purposes only and are not as exact as those used for regulatory purposes. 

New Edinburgh Kingsview Park Brantwood Park
Rideau Gardens Windsor Ave Warrington Dr
Brewer Park Summerside Dr Hurst Marina
Commodore Lane Lorne Bridge Rd Fennel Lane
Rideau Valley Dr (Kars) Lannin & Sheppard Lane Hilly Lane
Rideau Glen Eligh Lane Boise Village/Morin Rd
Grandview West Grandview East  

Please note:

  • The 1:2 year return period flood event has a 50% chance of occurring in any year.
  • The 1:5 year return period flood event has a 20% chance of occurring in any year.
  • The 1:10 year return period flood event has a 10% chance of occurring in any year.
  • The 1:20 year return period flood event has a 5% chance of occurring in any year.
  • The 1:50 year return period flood event has a 2% chance of occurring in any year.
  • The 1:100 year return period flood event has a 1% chance of occurring in any year.

 All Rideau River Additional Flood Maps are based on recorded flow at the Rideau at Ottawa [02LA004] gauge, located at Carleton University. The two Grandview Ottawa River Additional Flood Maps are based on recorded flow at the Ottawa River at Britannia [02KF005] gauge. The Boise Village/Morin Road Additional Flood Map is based on recorded water levels at the RVCA Cumberland gauge.

DISCLAIMER:   Users of the RVCA flow data and water level data are cautioned to consider the unverified nature of the information before using it for decisions that concern personal or public safety or the conduct of business. The Rideau Valley Conservation Authority assumes no responsibility for the correctness of the information contained in this website nor liability to any user of such information, regardless of the purpose. River levels and flows can change rapidly.

OTTAWA, Feb. 8, 2021 – Rural Ottawa landowners can access an additional 40,000 trees thanks to a generous donation from One Tree Planted. 

RVCA’s tree planting program helps private landowners turn farm fields and other marginal land into thriving forests of the future.

This is the second year of support from One Tree Planted, which will transform 20 hectares of idle land into functioning green infrastructure. Forests protect soil from erosion, improve nearby water quality, reduce flooding risks, capture carbon, improve wildlife habitat and increase biodiversity. Environment Canada recommends 30% forest cover in any community to sustain biodiversity and enjoy all the environmental services that forests provide. 

“We're thrilled to help make a positive impact with reforestation alongside the Rideau Valley Conservation Authority and local landowners,” said Diana Chaplin, Canopy Director at One Tree Planted. “It's really a team effort when it comes to environmental restoration."

Our forestry staff plant more than 250,000 trees on private land across the watershed each year – that’s more than 6.6 million since we started in 1983. The cost per seedling should be about $3, but with support from partners like One Tree Planted and the Rideau Valley Conservation Foundation, RVCA can offer landowners highly affordable large-scale planting at just $0.15 per tree. 

This includes a custom planting plan that’s good for the land and landowner, choosing species such as sugar maple, red oak, burr oak, white spruce, white pine and cedar depending on the site’s unique qualities and the landowner’s vision. Our staff then oversee the site’s preparation and tree planting process. We follow up three and five years after the trees are planted to see how they’re growing and replace struggling trees to ensure maximum survival rates.

“Support from partners like One Tree Planted is critical to ensure landowners are motivated to invest in tree planting on their properties,” said Forestry Manager Ian Cochrane. “Tree planting is one of the most practical ways to take care of our watershed and the wider environment.”

If you have land you’d like to reforest, consider planting trees through our program! Contact Ian at  or visit www.rvca.ca/stewardship-grants/tree-planting for more information. 

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Watch the Hutton Marsh Come Alive — The Hutton Marsh near Lombardy is in transformation, and now you can watch it happen! We’ve got exciting drone footage of the construction from winter 2020, and a glimpse of the new and improved marsh from last summer. Check out our new Hutton Marsh Restoration video on RVCA’s YouTube channel @RideauValleyCA — and don’t forget to subscribe! For more information contact DAN at


If you enjoyed this story, why not read the rest of the Around the Rideau newsletter, or better yet, subscibe and the next edition will be waiting for you in your inbox! Subscribe here. 

WCS - R02/2021

January 29, 2021 – Environment Canada is forecasting very cold weather beginning today and continuing into Sunday before returning to normal range on Monday. This includes night-time wind chill temperatures in the range of -20 to -30 degrees Celsius. In areas where there is a lack of ice cover along with turbulent flow, these cold temperatures can trigger the formation of frazil ice which can accumulate quickly on bridge abutments, piers and riverbanks resulting in increased water levels and flooding in low-lying areas. The small rivers and streams with open water, such as the Tay River, are considered the most vulnerable for frazil ice formation, resulting in localized flooding. Please notify RVCA if any localized flooding is observed to due frazil ice formation by sending an email to .

Residents are advised to stay away from all rivers and watercourses in the vicinity of any frazil ice and high-water areas. Parents are encouraged to explain these dangers to their children.

This watershed conditions statement is in effect until Monday February 1, 2021 at 5 PM or until an update has been issued.

"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.

TAY VALLEY, Jan. 28, 2021 – A beautiful piece of Tay Valley shoreline will be preserved in perpetuity thanks to a generous land donation to the Rideau Valley Conservation Foundation (RVCF). 

The 12-acre swath of forest and wetland is part of a thriving ecosystem and home to countless creatures – some of them currently at risk in Ontario. 

It is classic grey ratsnake territory, supporting an important species at risk in the Frontenac Arch biosphere. The Eastern wood-pewee, a species of special concern in Ontario, has also been spotted nearby. 

The property is mostly mixed hardwood forest, with a small patch of wetland. It’s well known to local residents for its unique rocky outcrop and its distinctive red oaks overlooking the lake. 

Under local zoning bylaws, the undeveloped property could have legally seen more than an acre cleared for buildings, roads and other development, only 30 metres from the shore. But now that will be avoided, preserving important habitat and environmental services on the lake forever.

“These kinds of medium-sized donations are important for conservation because they link to other natural lands and weave a tapestry of habitat and green infrastructure throughout the watershed,” said RVCF Director Diane Downey. “We are honoured to care for this property on behalf of the donor family in perpetuity.”

The Foundation has an active land securement plan and strong track record in managing donated land.

Forests and wetlands filter stormwater to keep our lakes and rivers clean, store water to prevent floods and drought, capture carbon and clean the air.

The RVCF prioritizes waterfront properties when accepting donations and places high value on properties that include wetlands, forest cover, floodplain, steep slopes, unstable soils, species at risk, ecological restoration potential or that link to another public property or natural area.

Depending on the property, donations could be eligible for considerable charitable tax benefits through the Ecological Gifts program. 

If you don’t have property to donate but want to support the conservation land program, donations to the Steve Simmering Conservation Land Endowment Fund are always welcomed to help cover annual property costs like taxes, insurance and on-the-ground maintenance like fencing and signage. 

For more information about land donations, contact .

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WCS – R01/2021)

January 13, 2021 – Environment Canada is forecasting mild temperatures for the remainder of this week, with daily temperatures above zero each day and some rain expected on Friday and Saturday. This follows a warmer than usual December and a mild January to date. As a result of a significant rain event on December 24 and 25, water levels are above normal for this time of year in the some of the lakes and rivers in the Rideau Lakes and Tay Valley sub-watersheds. Generally, water levels are at normal levels for the remainder of the watershed. 

Although no significant flooding is anticipated at this time, it is expected that water levels and flows will continue to fluctuate across the watershed with the continued warmer-than-normal conditions and forecasted rain later this week. As a result, ice thickness can change drastically and be unpredictable. The shoreline adjacent to lakes, rivers and creeks is also very slippery and poses a serious hazard. Falling into open water can result in hypothermia or drowning.

The RVCA reminds the public to exercise extreme caution around all waterbodies by:

  • Regularly testing ice thickness and staying off ice that may cover flowing water
  • Reminding children about the dangers of playing on or near ice covered surfaces and open water
  • Keeping pets on leash near frozen water bodies.

Ice Safety Ice Depth

RVCA does not monitor or maintain ice conditions anywhere, including its 11 public conservation areas. This includes the Rideau River and its tributaries, as well as the ponds, lakes and other bodies of water within our parks.

This watershed conditions statement is in effect until Monday, February 1, 2021 at 5 PM or until an update has been issued.


"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.

OTTAWA, JAN. 11, 2020 – We know that outdoor spaces matter right now more than ever: your mental and physical health depend on them. That's why we are proud to keep our 11 conservation areas and 42 km of trails open for you during this time.

When visiting our sites, your safety and the safety of others is our top priority. Please remember:

  • Stay 2 metres from people outside your household, or wear a mask if that’s not possible;
  • Follow all directional signs on trails (many are now one-way loops to limit passing);
  • No more than 25 people in gathering areas like parking lots, trailheads, viewing areas and toboggan hills;
  • Mask required when congregating at parking lots, trailheads, viewing areas and toboggan hills;
  • If the park looks busy, be prepared to come back another time;
  • Stay on the trails and park only in designated areas;
  • Keep dogs on leash at all times;
  • Ice conditions are not monitored and may be unsafe;
  • All conservation areas close at dusk.

Please note that parking fees apply in some parks. Annual passes are also available at paybyphone.com (code 5222).

Thank you for your continued commitment to keeping our community safe and healthy.

Happy trails!

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For more information:
Chelsey Ellis
Conservation Lands Planner

 

(WCS – R07/2020)

December 24, 2020 — Environment Canada is forecasting between 30 and 50 mm of rain starting today and continuing overnight throughout 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. Depending on how much 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 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 Monday January 4, 2020 at 5 PM or until an update has been issued.

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"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.
December 21, 2020

2021 Budget and Work Plan

Page 27 of 112

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