Events Calendar

Current Weather

Algonquin Park Ice Conditions

Important Information: COVID-19 updates, backcountry camping closure, and more

Algonquin Park's ice out was officially declared in the late afternoon of April 10, 2021 when a boat safely navigated from the Lake Opeongo Access Point to the Happy Isle Portage in the North Arm of Lake Opeongo, see below for more details.

Lake of Two Rivers Ice Out Time Lapse - April 2021

Watch ice out at Lake of Two Rivers in Algonquin Park in less than a minute (see above). Ice out in 2021 was the third earliest date in 57 years of detailed record keeping. This time lapse from April 1 to April 10, 2021 at Lake of Two Rivers is brought to you by The Friends of Algonquin Park, in partnership with Killarney Lodge. The top left corner of the video features the date and time. The bottom left corner of the video shows the weather conditions.

Facebook icon Twitter YouTube Instagram
Live Views of Algonquin Park

This year's ice out date of April 10, 2021 is one of the earliest recorded in 50+ years of detailed record keeping in Algonquin Park (see below for historical data). The official ice out date for Algonquin Park (and Lake Opeongo) has ranged from March 29 (2012) to as late as May 15 (1972). During the last 50+ years, the average ice out date for Lake Opeongo, Algonquin's largest lake, is April 28.

A satellite image from April 10, 2021 (below) shows nearly all backcountry lakes in Algonquin Park are ice free. Satellite and ground observations also show that bare ground is widespread with snow and ice patches persisting primarily under dense conifers and on hard packed sections of trails.


Latest Conditions at Lake of Two Rivers

Monitor the status of spring by observing conditions at Lake of Two Rivers in Algonquin Park from the comfort of home. The image below updates about every 15 minutes during daylight hours, just refresh your browser. Lake of Two Rivers is representative of conditions on medium sized lakes in Algonquin Park. This image is brought to you by The Friends of Algonquin Park, in cooperation with Killarney Lodge. For a record of changes see recent images below.


Click to view a full-sized version.

More About Lake of Two Rivers in Algonquin Park

Lake of Two Rivers is a medium sized lake located in south central Algonquin Park. Lake of Two Rivers entire lake surface, covering 315 hectares (780 acres), is easily observed from Highway 60 allowing for detailed freeze and thaw data to be recorded over the years. On average, Lake of Two Rivers freezes on December 11 and thaws on April 25. Ice out dates can vary widely and in the past 45 years, ice out on Lake of Two Rivers has ranged from as early as March 30 (2012) to as late as May 10 (2018). In 2021, Lake of Two Rivers became ice free on April 10. On average Lake of Two Rivers sheds its ice cover 3 days earlier than Lake Opeongo, Algonquin Park's largest lake, and the basis for declaring Algonquin Park's ice out (see below for historical ice out information). However, this year Lake of Two Rivers and Lake Opeongo became ice free on the same day (April 10, 2021).


Recent Algonquin Park Images

A selection of recent images from Algonquin Park. See the caption for the date and location. More images are available on The Friends of Algonquin Park Facebook Page. For the most current image, see the Lake of Two Rivers above.

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 1, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 2, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 3, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 4, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 5, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 6, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 8, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 7, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 8, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 9, 2021 (click to enlarge).

 

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge).

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge)

Image: Lake of Two Rivers in Algonquin Park on April 10, 2021 (click to enlarge).

 


Latest Satellite Imagery

Below is satellite imagery of the Algonquin Park area. Imagery is taken on a regular basis with the best images recorded on completely clear days, which can be infrequent during late winter/spring. Images are posted to highlight the overall changes in ice conditions in south-central Ontario.

Satellite Image of  Algonquin Park on April 10, 2021

Image: Satellite image of Algonquin Park taken on April 10, 2021, showing nearly all lakes in Algonquin Park free of ice. Lakes showing black are open like Georgian Bay, Lake Simcoe, and Lake Nipissing, while lakes showing various shades of gray remain ice covered but the ice is of poor quality. The strongest ice always appears bright white (click to enlarge the image).


Satellite Image Comparison

Below are satellite images of the Algonquin Park area from recent years for comparison purposes. Official ice out dates for Lake Opeongo (Algonquin Park's largest lake and traditionally one of the last to shed its ice cover) are listed with each image.

Satellite Image in Algonquin Park on April 7, 2020

Algonquin Park Ice Cover April 10, 2019

Algonquin Park Ice Cover April 5, 2018

Algonquin Park Ice Cover April 8, 2017

Algonquin Park Ice Cover April 9, 2016

Algonquin Park Ice Cover April 12, 2015

Algonquin Park Ice Cover on April 9, 2014

Algonquin Park Ice Cover on April 15, 2013

The spring of 2012 was record early by about a month and ice on Lake Opeongo melted by March 29. All lakes in Algonquin Park were ice free by April 2, 2012.

Algonquin Park Ice Conditions April 2, 2012


Algonquin Park Ice Out History

Typically, Algonquin Park's lakes become ice free in late April/early May. Over the past 50+ years, the average ice out date for Lake Opeongo, Algonquin's largest lake, is April 28. Given variations in winter and spring conditions, the ice out dates for Lake Opeongo have ranged from March 29 (2012) to as late as May 15 (1972). During 2020 the ice out date for Lake Opeongo was April 30 (see graph below). The ice out date for Lake Opeongo (and Algonquin Park) in 2021 was April 10.

Technically, the official ice out date for Algonquin Park is recorded when a boat can safely navigate from the Lake Opeongo Access Point to the Happy Isle Portage in the North Arm of Lake Opeongo.

Algonquin Park Ice Out History


Spring and Safety

Please remember that The Friends of Algonquin Park advises against ice travel due to a range of environmental variables and the difficulty in detecting hazards. Be safe, stay off the ice. Park visitors are encouraged to stay away from fast moving and icy cold water at this time of year.

Water temperature in spring remains just above freezing for many days after ice out. Submersion in cold water can quickly lead to hypothermia (a potentially deadly situation). Reduce the risks, by wearing a PFD, stay close to shore, paddle according to your skill/experience level, pack the proper safety gear, and don't take unnecessary risks. Learn more about hypothermia and cold water.

For the latest Algonquin Park closures and restrictions see Algonquin Park Advisories and COVID-19 Updates.


Related Information

 

Reserve your developed or backcountry campsite for your next visit.

Share your passion for Algonquin Park by becoming a member or donor.

Special regulations for Algonquin's special fishery.