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Flows in all watercourses in the Rideau River watershed increased through the weekend and may have peaked on Monday. However, with rain forecast for tomorrow, flows may rise slightly higher by Wednesday night than what was reached yesterday. This could bring flooding of the lowest lying areas along streams.

Below freezing temperatures are forecast for Friday and into next week. This freeze-up will cause water levels to decline quickly. With the changing water levels and ice formation due to the colder temperatures, caution around water is advised and children need to be warned of the risks.

An unusually warm string of temperatures that are forecast to continue through next week are rapidly reducing the snowpack. Flows in all watercourses have increased significantly over the last two days. This increase will continue through the weekend until the snow cover is gone on Sunday night. Further increases in water levels will depend on whether or not the 10 to 20 millimetres of rain presently forecast for Monday to Wednesday occurs and when it falls.

The impact of the melt and rain is expected to be a peak flow on March 17 in the order of 280 cubic metres per second as measured at the streamgauge at Carleton University. Such a flow is below average and not expected to cause flooding of any more than lowest lying areas along the streams and rivers in the watershed.

A mix of precipitation forecast for tonight through to Thursday can be expected to cause some increase in levels in in all watercourses throughout the Rideau River Valley.

It is unclear what will be the predominant form of precipitation that will fall over the next two days. If it is mainly rain, much of that will be retained in the snowpack but some runoff can be expected to occur and water levels will increase on all watercourses.

Brewer Park Pond Restoration Project has received the Top Canadian Fishing Industry Conservation Project Award for 2015. This award, presented at the Spring Fishing and Boat Show at the International Centre in Mississauga, ON is determined by a vote of the members of the Canadian Angling Hall of Fame.

For Muskies Canada (Ottawa Chapter) and the Rideau Valley Conservation Authority (RVCA), this is the second year in a row where one of their partnership projects has received recognition. In 2014, the partners were recognized for work to create nursery and feeding habitat for fish along the Jock River in Richmond.

January 08, 2016

January Thaw

After waiting for so long for snow to arrive, above freezing temperatures and rain forecast for tomorrow and Sunday can be expected to reduce the snow cover and cause increased water levels and flows in the Rideau watershed.

Water levels on lakes and flows in watercourses are close to normal for the time of year. However, as conditions change through this thaw period, levels will increase and ice on lakes, ditches, local streams and rivers that had just begun to form will become more unstable posing potential safety risks. Caution should be exercised by everyone when near local streams and rivers. Parents should inform their children of the risks associated with increased flows and unstable ice conditions in area watercourses and provide appropriate supervision. An extended period of cold temperatures is needed for a stable ice cover to form.

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August 29, 2016

Butternut Recovery


We are working to help butternut persist on the landscape. 
The Butternut Canker Disease is threatening the very survival of Butternut across the entire natural range in North America including the Butternut populations in eastern Ontario. 


Butternut Recovery Program:

    butternut tree
  • informs landowners about ​the endangered ​status of Butternut and encourages them to maintain their healthy trees
  • locates, assesses ​and maps ​healthy Butternut trees, ​to be logged in a seed-source ​geodatabase
  • collects ​seeds from ​healthy trees and those showing signs of tolerance ​throughout Eastern Ontario
  • grows seedlings from these ​seeds each fall at the Ferguson Forest Centre in Kemptville for the Landowner Butternut Planting Program, which: 
    • distributes 2,000 ​vigorous seedlings to hundreds of landowners across Eastern Ontario to replace dead and dying Butternut trees 
    • tracks survival and health of planted Butternuts via landowner ​volunteer reporting
  • continually re-assesses the health of the butternut seed trees in the database and forecasts seed crops each summer
  • collects leaves or buds from ​seed trees to ​DNA test for hybridization ​to ensure we are only collecting seeds from pure Butternut
  • makes tolerant trees available for cloning to support the long-term ​grafting program ​managed by the Forest Gene Conservation Association (FGCA)


Species At Risk Compensation Program:

  • makes Butternut ​seedlings available ​within ​MNRF ​Seed Zone​s 35 and 36 ​for MECP (Ministry of Environment, Conservation & Parks) compensation permits
  • Seedlings are planted and maintained at several butternut groves on RVCA properties across the watershed
  • These groves will be managed long-term as Butternut Seed Orchards for the recovery program.


Why Are Butternut Endangered?

Butternut trees in Eastern Ontario and across their entire natural range in North America are under attack by the Butternut Canker Disease. This is a deadly fungal disease that attack​s all Butternut trees regardless of their age or size. There is no known cure ​for the disease but ​there is hope in locating trees ​that appear to ​have a natural tolerance to the disease. These rare individuals are the focus of the recovery program in Ontario for seed collection to produce vigorous seedlings for out-planting and to clone the genetic material of these trees through grafting in an effort to eventually save the species.

Butternut is classified as an endangered species under the Ontario Endangered Species Act (ESA 2007). It is illegal to harm or kill a ​naturally occurring Butternut tree without a ​Butternut Health Assessment. Seedlings planted through our program are exempt from the protection of the ESA.

Why are Butternut Important?

The Butternut (Juglans cinerea) is a native tree species that has co-existed as part of the Eastern Ontario forests for thousands of years. In Canada, it grows across southern Ontario, Quebec and New Brunswick. The presence of Butternut is important for several historical, ecological, economic and medicinal reasons:butternut leaves

  • Butternut wood is cherished for fine furnishings, paneling, carving and turning
  • Butternut bark, roots, nut oil and husks all have medicinal qualities ranging from arthritis and headache relief to lowering human cholesterol (please seek medical advice before trying)
  • Butternut is an important food source for small mammals, birds and humans
  • Edible nuts were used by First Nations and settlers for their high oil content and concentration of omega-3 fatty acids; the dried nuts can be stored for years

Get Involved!

There are three ways to get involved:


Rose Fleguel, Butternut Recovery Technician


August 26, 2016

Dan Cooper

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Contact Us

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

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



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

Member of: conservation ontario