I read/copied this from a different site and found it very interesting. I received a copy of the acoustic data for Forage Fish Abundance Estimates for 2008. It also includes year-to-year density comparisons for past survey years. There are a series of YOY(young of the Year) alewife density overlays on Lake Michigan, as well as YAO (Juveniles-adults and older Alewife) density overlays for fish in the water column. There are two large, clockwise surface current gyres that form in Lake Michigan. One circulates in the southern portion of the basin, with its northern edge around the mid-lake hump between Ludington and Milwaukee. The other is more elongated north and south, and sweeps most of the northern portion of the basin. While Lake Michigan waters mix between these two gyres, volumes exchanged are not massive. River current driven outflows along the shore intersect these nutrient rich plumes, hit these circulating currents, spinning these waters in a clockwise pattern around the basin annually. These same,primarily westerly winds sweep Green Bay waters annually as well. Green Bay outflow and the north current gyre intersect along a boundary seam from Washington Island to Point Detour, extending in a thinning strip to the Straits of Mackinaw. Highest densities of pelagic Alewife, Smelt, and Bloater YOY and juvenile fish occur in the northern portion of the basin along the boundary layer and in a stripe along the base of the Door peninsula from south of Sheboygan up to Sturgeon Bay. The next volume of water that contains high concentrations of pelagic forage fish is in the seam for Washington Island, to Point Detour, to Naubinway. Highest densities that occur in the southern portion of the basin occur in the southeastern portion of Lake Michigan off of Pentwater down to St. Joe/Benton Harbor. So, if you ever wonder why fishing is good in these areas, it is where the forage fish are abundant! Bottom line, no matter what happens in the basin proper. I think Fairport and Cedar River will always provide a good fishery. Kinda like the conversation law enforcement folks had with John Dillinger. When asked why he always robbed banks. Dillinger replied, "Because that's where the money is!" Well, maybe then, but not now!