This Chart details all of the Major Fishing Areas and pinpoints dozens of specific areas for the major species caught in the area. (Large and Smallmouth Bass, Yellow Perch & Walleye.) Many areas have GPS positions. Marsh areas are also identified. Marinas are listed as well as popular Boat Ramps.Coverage from Lorain, Ohio north to Canada and west to Toledo on one side, including all the islands of Lake Erie and Port Clinton. The reverse side covers the Detroit River north to Belle Isle and Detroit. Detailed blow up insets for Port Clinton and Monroe Harbor.Information from 2 NOAA Charts: 14847 & 14830. GPS Datum.If you fish Lake Erie & the Detroit River this is a must have for your tackle box.This Chart is 25x9D X 38x9D and folded to 7x9DX14x9D