USGS Water Resources Division water quality site: 05583000 Site description: Sangamon River near Oakford, IL Hydrologic Unit Code (HUC): 07130008 Site UTM N: 4445626 Site UTM E: 756946 UTM zone: 15 Drainage area at water quality site: 5,093 mi2 Sampling frequency: monthly Flow station: 05583000 (USGS daily flows) Station description: Sangamon River near Oakford, IL Hydrologic Unit Code (HUC): 07130008 Station UTM N: 4445626 Station UTM E: 756946 UTM zone: 15 Drainage area at flow station: 5,093 mi2 Period of record: 10/01/1939-09/30/1997 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