Continued risk of erosion despite Lake Superior decline | www.WDIO.com

Continued risk of erosion despite Lake Superior decline

Continued risk of erosion despite Lake Superior decline Photo: Kevin Johnson/WDIO-TV

WDIO-TV
Updated: February 03, 2021 02:53 PM
Created: February 03, 2021 02:15 PM

Erosion is still a risk even though Lake Superior is continuing its seasonal decline, according to a monthly update from the International Lake Superior Board of Control.

The board says Lake Superior declined 3.9 inches (10 centimeters) during January, a month when the average decline is 2.8 inches (7 centimeters). The lake is 7.1 inches (18 centimeters) above the 100-year average but 7.9 inches (20 centimeters) below the record-high level of a year ago.

As of Wednesday, the National Oceanic and Atmospheric Administration estimated Lake Superior to be only about 5 percent ice-covered. There are pockets of ice in the Twin Ports, Thunder Bay, and Chequamegon Bay areas, but large parts of the shoreline in Minnesota, Wisconsin, Michigan, and Ontario remain ice-free.

"There will continue to be an increased risk of shoreline erosion, lakeshore flooding and coastal damages over the next several weeks and potentially through the winter. The International Lake Superior Board of Control advises all those that may be affected to prepare for potentially severe coastal impacts, especially during periods of strong winds and high waves," the board said in its update.

The board said Lake Superior outflows continue to be set in consideration of high levels upstream and downstream.

They reminded lakeshore property owners that the Great Lakes – St. Lawrence River Adaptive Management Committee continues to host an online questionnaire about impacts related to recent high water conditions at https://ijc.org/glam/questionnaire.

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