Long Term Resource Monitoring Program water quality site: AL02.3M Site description: Apple River near confluence with Mississippi River Hydrologic Unit Code (HUC): 07060005 Site UTM N: 4674110 Site UTM E: 728236 UTM zone: 15 Drainage area at water quality site: 252 mi2 Sampling frequency: biweekly Flow station: 05419000 (USGS daily flows) Station description: Apple River near Hanover, IL Hydrologic Unit Code (HUC): 07060005 Station UTM N: 4681041 Station UTM E: 723885 UTM zone: 15 Drainage area at flow station: 247 mi2 Period of record: 10/01/1934-09/30/1997 Flow conversion: 1.020 x (flow at 05419000) = estimated flow at AL02.3M The following constituent values have been removed from analysis as possible outliers, or are below detection limits: Date Constituent Concentration 09/08/94 Total Nitrate + Nitrite 10.9740 08/22/96 Total Nitrate + Nitrite 0.0876 Additional comments: none Loads for this site were estimated with LOADEST2 version 1.10