Great Lakes Water Levels Going Up

The pic. above is a late March aerial view of Isle Royale in Lake Superior from the Isle Royale Nationial Park facebook page.  Above average rainfall and runoff continues to increase the water levels of the Great Lakes.  Lake Michigan/Huron is up 4″ in the last two weeks.  One inch of water gained on Lake Michigan is 390 billion gallons, so 4 times that is 1.56 trillion gallons of water added to the lake in just 14 days.  The lake is up 7 inches in the last month and is now 13″ above the April average.  Lake Superior is up 2″ in the last month and is now 7″ above the average for April.  Lake Erie has gained 7″ in the last month and is now 17″ above the April average level.  Lake Ontario has gone up a whopping 15″ in the last month!  Ontario is now 21″ above the April average level and only 9″ below the all-time highest April level reached in 1973.  Lake St. Clair is up 8″ in the last month and is 17″ above the April average.  All the major Great Lakes connected rivers show above average flow and that should continue into the summer.

Here’s some river flows (as of 10:30 pm Thu.) in cubic feet per second compared to (average flow):  Grand River and Grand Rapids 10,600 cfs (5,560 cfs), Kalamazoo River at Comstock 1,720 cfs (1180 cfs), Muskegon River at Evart 3,420 cfs (1840 cfs), Saginaw River at Saginaw 11,100 cfs (6,390 cfs), St. Joseph River at Three Rivers 2,740 cfs (1,840 cfs), Fox River at Oshkosh WI 16,000 cfs (8,139 cfs), St. Croix River at St. Croix Falls WI 11,300 cfs.

There’s a 0.5% ice cover left on Lake Superior…the other four Great Lakes are now ice free.

Great Lakes news:  Unfavorable conditions on the Grand River have postponed next week’s scheduled state fish stock at the Grand Haven Municipal MarinaWayne Co. NY issues State of Emergency for bays and harbors due to high water levelsRare catch in downtown ChicagoGreat Lakes mirage“Exploding” Moose populationSmelt fishing revival on Lake Michigan.  The latest from BoatnerdHigh waves keep salvage crew from grounded yachtCatch a fish – win $100k.  Port Sheldon buoy back in operationWind turbines around the Great Lakes a bad idea for birds, bats.

Comments are closed.