Iris Catholique says over the past two decades, she's noticed the waters of Great Slave Lake surrounding Lutsel K'e, N.W.T., taking longer to freeze in the winter. Climate change is making ice conditions on the lake, which is roughly the same size as Belgium and the deepest lake in North America, less predictable.
Wilfrid Laurier University researcher Homa Kheyrollah Pour examines an ice road with Chase Lockhart, centre, and Rubin Fatt, right, Indigenous guardians from Łutsel Kʼé, NWT, in an undated handout photo. Iris Catholique says over the past two decades, she's noticed the waters of Great Slave Lake surrounding Lutsel K'e, N.W.T., taking longer to freeze in the winter.
The community, home to more than 300 people, is only accessible by plane or travelling on the lake by boat in the summer and over the ice in the winter. They installed snow and ice mass balance apparatuses, or SIMBAs, at two locations identified by the community where the ice is thinner and there is more overflow. The sensors measure ice thickness, snow depth, and air and water temperatures every 15 minutes, providing community members real-time data to help inform decisions on ice travel.
Last winter, she and her team installed SIMBAs on Ryan Lake and Landing Lake north of Yellowknife. This winter she said they installed some on those lakes, as well as the ice road on Vee Lake outside Yellowknife, the ice roads to Dettah and Deline and two locations outside Lutsel K'e.
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