Great Lakes Water LevelsSeptember 21st, 2013 at 6:00 am by Bill Steffen under Bill's Blog, News, Weather
The lighthouse pic. is from Paul at ReportIt. Check it out full screen. The water level of Lake Michigan/Huron is down 1″ in the last month (levels usually fall in the Fall Season), but remains up a healthy 7″ in the last year. The lake is still 18″ below the long-term average water level, but 11″ higher than the level of Sept. 1964. Lake Superior is up 2″ in the last month and up a phenomenal 12″ in the past year. That represents a gain of 6.12 TRILLION gallons in just one year. I don’t know if we have ever had a 12″ gain from Sept. to Sept. on Lake Superior before. Superior is now only 2″ below the century average. It’s 15″ below the highest Sept. reading ever in 1985 and 18″ above the lowest Sept. level ever reached in 2007. Lake Erie is down 4″ in the last month, but up 9″ year-to-year. Erie is exactly at the long term average and 34″ above the lowest Sept. level ever, reached in 1934 (those dry, hot 1930s). Lake Ontario is down 8″ in the last month (Erie and Ontario can fluctuate a great deal over a short period of time), but up 10″ since Sept. 2012. Ontario is 1″ above the century average, and 33″ above the lowest Sept. level, also reached in 1934. Lake St. Clair is up 10″ year-to-year.
Great Lakes News: A trend toward colder weather partly responsible for the dramatic rise in Lake Superior’s water level, Asian carp found in Flatfoot Lake, just 10 miles from Lake Michigan and Hurrah for the beavers!
Finally, here’s this week’s lazy journalism entry. The Daily Globe is wrong (it’s 2″ not 10″ – and like I said, the data is there every week to get the correct figures) and Northland’s NewsCenter gets it right.