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Information and Resources LIRB NAWQA A brief description of NAWQA and its goals BASIN INFORMATION A description of the Lower Illinois River Basin GROUND WATER Network design, site descriptions, and sampling methods SURFACE WATER Network design, site descriptions, and sampling methods BED SEDIMENT AND FISH TISSUE Network design, site descriptions, and sampling methods ECOLOGY Network design, site descriptions, and sampling methods MAPS Maps of geologic, physical, ecological, and design features ILLUSTRATIONS Illustrations prepared for the Lower Illinois River Basin study SURVEY DATA Longitudinal profiles, cross-sections, two-dimensional, and oblique angle plots of stream-segment surfaces AERIAL PHOTOGRAPHY Low altitude photographs taken from a remote-controlled helicopter PUBLICATIONS Fact sheets, reports, and abstracts STAFF Contact information and project personnel NAWQA DATA WAREHOUSE Chemical, biological, and physical water quality data from NAWQA study units across the nation. (This site is not maintained by LIRB personnel) U.S. Department of the Interior U.S. Geological Survey 221 North Broadway, Urbana, IL 61801, USA URL: http://il.water.usgs.gov/proj/lirb/index.html Maintainer: djfazio@usgs.gov Last modified: 10:42 CST Thur 11 May 2000