Weinberg-King State Fish and Wildlife Area is located on the western edge of a large plain of
glacial till left behind by the ice sheets of the Illinois Glaciation, which spanned from 300,000 to 125,000 years before the present. Because the park is at the edge of the till plain, the park's streams, especially Williams Creek, have eroded down through the till to a bed of Pennsylvanian
sandstone. The park is based on a parcel of open space formerly owned by the Weinberg-King family, who donated the land to the state of Illinois in 1968. ==Today==