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THE RISE AND FALL OF LAKE CHAMPLAIN May 10, 2011

Posted by thenaturalist in Floods/High Water, Rain, Records.
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According to the Lake Champlain Basin Program, the Lake Champlain watershed covers 8,234 square miles, including most of the western half of Vermont and eastern Adirondacks and parts of southern Quebec. The lake covers about 435 square miles and holds roughly 6.8 trillion gallons of water. The highest level previously recorded in Burlington was 101.86 feet on April 27, 1993.

On March 9, 2011, the lake level was just 96.48 feet above sea level. It took nearly two months of heavy rain and snowmelt before the flood peaked at just over 103.2 feet on Friday May 6, 2011. Now that the rain has stopped, and the snow has melted, it will take a similar length of time for the lake to recede. It has only one outlet, the Richelieu River, which runs north toward Montreal. At 8 a.m. May 7, the lake level had dropped to 103.18, and by 8 p.m. it was down to 103.15. At 8 a.m. May 8, it was down to 103.11 and at 8 p.m. down to 103.05. At 8 a.m. May 9 it was down to 103.00 and at 8 p.m. down to 102.9. (Matt Sutkoski, “One way out for lake water,” BFP, May 10, 2011.

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