Abstract |
Water resources data for the 1977 water year for Illinois consist of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water quality of ground water. This report contains discharge records for 163 gaging stations; stage only records for 5 gaging stations; stage and contents for 3 lakes and reservoirs; stage only for 5 lake stations; water quality for 46 gaging stations, 14 partial-record stations, 8 miscellaneous stations, and 35 wells; and water levels for 3 observation wells. Also included are data for 171 crest-stage partial-record stations and 60 flood-profile stations. These data represents that part or the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in Illinois. |