yyctimes

    Subscribe to Updates

    Get the latest creative news from FooBar about art, design and business.

    What's Hot

    Sex assault suspect seeking bail won’t know fate until later in June

    June 7, 2023

    Calgarian who fled Russian troops helps victims of dam breach

    June 7, 2023

    Heat warning issued for Calgary

    June 7, 2023
    • Home
    • Contact Us
    Facebook Twitter
    yyctimes
    yyctimes
    Home » Experts answer why the ice jam on Calgary’s Bow River – Calgary
    yyctimes

    Experts answer why the ice jam on Calgary’s Bow River – Calgary

    yyctimesBy yyctimesDecember 9, 2022No Comments3 Mins Read
    Facebook Twitter LinkedIn Telegram Pinterest Tumblr Reddit Email
    Share
    Facebook Twitter LinkedIn Pinterest Email

    Extreme cold and temperature swings in Alberta this week have created a somewhat unusual formation along Calgary’s Bow River.

    Thursday night, Alberta Environment and Protected Areas issued an “ice advisory” after river ice melted and moved, forcing flooding near the Calgary Zoo and Inglewood.

    “That new ice cover that formed in the cold weather became unstable and collapsed and formed what we call a freezing ice jam,” said Stefan Emmer, a river hydraulics and ice engineer with Alberta Environment and Protected Areas.

    Warning: Alberta Environment has issued an ice advisory for the Bow River (https://t.co/h2ayiGUTL5) after an ice jam caused minor flooding on low-lying trails near Calgary Zoo & Inglewood. Affected roads remain closed. https://t.co/r2ShbEyFXJ pic.twitter.com/gOb1ZiDbHU

    — City of Calgary (@cityofcalgary) December 9, 2022

    Story continues below advertisement

    The “freeze jam” between Harvey Passage and the 12 Street Bridge caused water levels to rise by about two meters on Friday, closing some paths.

    And while immediate flooding concerns continue to fade with a warming trend, the province and city will need to closely monitor the jam throughout the season.

    “It’s unusual for it to happen in that exact spot,” Emmer said. “We have not seen such an ice jam in the last number of years.”

    Alberta has seen very real impacts from ice jams before, including in April 2020, when a 13-kilometre ice jam on the Athabasca River forced thousands from their homes in Fort McMurray.

    Read more:

    Ice jam causing flooding in Fort McMurray shrinks to 13km in size: officials

    This is something Calgary has experienced before.

    In 1950, overnight flooding forced thousands to flee their homes on the Bow River between Center Street and 4th Street SW. Sudden freezing, wet evacuations in -20 Celsius temperatures sent several people, including emergency personnel, to hospital.

    A provincial commission was set up in 1952 to investigate the cause and possible mitigation.


    Click to play video: 'Construction begins on Springbank off-stream reservoir project'

    1:58
    Construction begins on the Springbank downstream reservoir project


    The report recommended the construction of the Bearspaw Dam, which was completed two years later.

    Story continues below advertisement

    “Ice freezing like this became less common after the construction of that second dam,” Emmer said. “It moves this warmer water temperature downstream.”

    More extreme temperatures are needed to create the kind of freezing and thawing that created this week’s ice jam. And larger, more frequent temperature swings — linked to climate change — may continue to create a cold trend.

    © 2022 Global News, a division of Corus Entertainment Inc.



    Source link

    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    yyctimes
    • Website

    Related Posts

    Backcountry around Brazeau Dam being evacuated due to several raging forest fires

    May 5, 2023

    Alberta election: NDP hopes to woo undecided conservatives; UCP looks to workers

    May 5, 2023

    Alberta election fact check: Will it cost $87B to decarbonize the grid?

    May 5, 2023

    Investigators desperately trying to identify victim in Alberta child sexual assault case

    May 4, 2023

    Northwest Calgary home severely damaged by fire

    May 4, 2023

    Alberta wildfires: Rural Yellowhead County residents told to flee to Wildwood

    May 4, 2023

    Leave A Reply Cancel Reply

    Don't Miss
    yyctimes

    Sex assault suspect seeking bail won’t know fate until later in June

    By yyctimesJune 7, 2023

    Article content material Suspected serial intercourse offender Richard Robert Mantha won’t discover out till not…

    Calgarian who fled Russian troops helps victims of dam breach

    June 7, 2023

    Heat warning issued for Calgary

    June 7, 2023

    First woman elected in Alberta — and the British Empire in 1917

    June 7, 2023
    Our Picks

    Sex assault suspect seeking bail won’t know fate until later in June

    June 7, 2023

    Calgarian who fled Russian troops helps victims of dam breach

    June 7, 2023

    Heat warning issued for Calgary

    June 7, 2023

    First woman elected in Alberta — and the British Empire in 1917

    June 7, 2023

    Subscribe to Updates

    Get the latest creative news from SmartMag about art & design.

    Our Picks

    Sex assault suspect seeking bail won’t know fate until later in June

    June 7, 2023

    Calgarian who fled Russian troops helps victims of dam breach

    June 7, 2023

    Heat warning issued for Calgary

    June 7, 2023
    New Comments

      Type above and press Enter to search. Press Esc to cancel.