into dunes. The sand islands were the sites of Indian encampments and later of pioneer homes. The Kankakee marsh was an effective barrier to early southerly exploration of both counties, but the area has been progressively drained by ditches constructed during the past 60 years. Landscape The Kankakee River Basin is a product of the Wisconsin Glacial Episode. It is a remnant of the glacial lakes that comprised the Lake Michigan lobe of the ice sheet. Landscape elements include 1) the nearly level plains of a ground moraine, 2) eolian (wind driven deposits) plains, 3) outwash deposits, 4) the central river basin and 5) end moraines forming the north, middle and southern borders. Local relief varies from along the Iroquois Moraine, up to on the Valparaiso Moraine. Deposits range from in the lower basin (western). The deepest deposits of are in the upper basin (eastern). Along the Valparaiso Moraine, deposits can reach thick. Outwash deposits occur primarily along the northern border of the basin. The southern half of the Kankakee Basin, south of the main river channel, is characterized by the fine-grained sediments that are wind driven, forming a series of broad eolian sand dunes and ridges. These are of moderate height. lacustrine silts and clays are mixed with the various waterborne and wind driven deposits throughout the basin. Bedrock The bedrock underlying the Kankakee Basin is primarily of Silurian age. There are also strata from the Devonian, and Mississippian periods. The Silurian rocks are primarily dolomite and limestone. A major subterranean feature is the Kankakee Arch; it is an extension of the Cincinnati Arch. North of the arch, the strata dip towards Lake Michigan and the Michigan Basin. To the south, the strata dips southwest toward the Illinois Basin. Within the Kankakee Basin (Lake, Jasper, and Pulaski counties), the rock strata are nearly flat, being at the top of the arch. Current conditions The Advanced Hydrological Prediction Service contains current data for river depths. Contrary to what may be shown in online mapping sites or GPS software, the bridge over the Kankakee River on State Line Road near the public ramp at the Indiana–Illinois state line is closed and partially dismantled. Some fishing maps and websites about the river may include road directions to the public ramp at the state line, with outdated information. The public ramp is located on the north side of the river, and with the