Great Lakes Water LevelsSeptember 27th, 2012 at 5:48 pm by Bill Steffen under Bill's Blog, News, Weather
Dry weather and high evaporation continue to cause the water level of Lake Michigan to go down. The water level of Lake Michigan/Huron is down 6″ in the last month (a very large drop in a month’s time). The lake is down 12″ in the last year and is now 28″ below the century average. The lake is 2 inches above the level of September 1964. Lake Superior is down 3″ in the last month and is down 2″ in the last year. Superior is 14″ below the century average. Lake Erie is down 4″ in the last month and is now 15″ lower than one year ago. Erie is 10″ below the century average. Lake Ontario has fallen 6″ in the last month and is now 10″ below the level of one year ago. Ontario is 12″ below the century average. When you come down to Art Prize and see the Grand River, you can see the water level is lower than average. As of this Thurs. evening, the flow of the Grand River in downtown Grand Rapids was 1170 cubic feet per second. The average flow is 2200 cubic feet per second, so that means that the water flow is 53% of average. Same story on the Rogue River at Rockford, which is now at 52% of average flow.