USGS Water Resources Division water quality site: 05599500 Site description: Big Muddy River at Murphysboro, IL Hydrologic Unit Code (HUC): 07140106 Site UTM N: 4184009 Site UTM E: 821981 UTM zone: 15 Drainage area at water quality site: 2,169 mi2 Sampling frequency: monthly Flow station: 05599500 (USGS daily flows) Station description: Big Muddy River at Murphysboro, IL Hydrologic Unit Code (HUC): 07140106 Station UTM N: 4184009 Station UTM E: 821981 UTM zone 15 Drainage area at flow station: 2,169 mi2 Period of record: 06/04/1930-09/30/1997 Flow conversion: none The following constituent values were removed from analysis as possible outliers, or are below detection limits: none Additional comments: none Loads for this site were estimated with LOADEST2 version 1.10