Great Lakes Water LevelsFebruary 16th, 2013 at 2:06 am by Bill Steffen under Bill's Blog, News, Weather
Much of Michigan and E. Wisconsin has had above average precipitation over the past 2 1/2 months. Here’s precipitation surpluses since Dec. 1: Grand Rapids +2.93″, Muskegon +4.94″, Lansing +1.91″, Houghton Lake +3.84″, Alpena +2.41″, Green Bay +2.97″, Milwaukee +3.74″, Marquette +0.55″. Runoff into Lake Michigan has been above average flow. We’re seeing an effect on the water level. Lake Michigan (and Lake Huron – they’re at the same water level, connected at the Mac. Bridge) is up 2″ in the last month and is now 1″ higher than it was in Feb. 1964 (the low water year). The lake is down 13″ year-to-year (that was 17″ at one point) and 26″ below the century average. Lake Superior is now 2″ higher than it was one year ago and remains 12″ below average. Lake Erie is unchanged in the last month and 5″ below the century average. Lake Ontario is UP 6″ in the last month (quite a climb for mid-winter) and is 3″ below the century average. We’ll likely see above average precipitation again in the next week. Thanks to Jack Martin for the picture of the St. Joseph Lighthouse, sent in to us on ReportIt. Take a look at Jack’s picture full screen.
Last week I wrote about how the claim that the very large drop in the water level of Lake Michigan/Huron was due to a lack of snow last winter was suspect, since we have near to above average precipitation last winter (less snow, but more rain). Here’s another article from Meteorologist Mark Torregrossa that says the same thing. Also, wind turbines to be placed in the Great Lakes. Many of the biggest Great Lakes ships are overwintering in Milwaukee. And…could Lake Erie freeze over for only the 2nd time since 1996.