Surficial Geologic Map, Ottawa Quadrangle, LaSalle County, Illinois
28" × 28" single map sheet; sheet includes map, legend and descriptive text; map is available for download only. This map has not been reviewed by the Illinois State Geological Survey and does not necessarily conform to the usual style and standards for ISGS publications. For more information about the EDMAP program, click here.
Purchase this map online through Shop ISGS*, or contact the Sales and Information Office for more information.
*excludes EDMAP series and student maps