Mississippi River at Anoka, MN (Hwy 52-169 Bridge) (Agency code: UM 871.6) TN_N NOx_N NHx_N TP_P SRP_P TSS Cl Total obs. = 342 552 848 586 356 552 21 Start date = 01/07/76 01/07/76 01/07/76 01/07/76 03/16/77 01/07/76 05/04/92 End date = 12/16/96 12/16/96 12/16/96 12/16/96 12/16/96 12/16/96 11/04/96 Mx smp int days= 317 49 64 49 83 50 119 Mean samp int= 22.4 13.9 9.0 13.1 20.3 13.9 82.3 Stdv samp int= 21.5 5.8 4.8 5.8 10.7 5.8 24.5 Mean conc. = 1.69 0.79 0.129 0.122 0.061 18.7 12.4 Stdev conc.= 0.88 0.73 0.194 0.105 0.066 16.7 3.8 Min conc. = 0.11 0.02 0.010 0.010 0.002 1.0 6.0 25% conc. = 1.15 0.29 0.020 0.060 0.020 6.0 10.0 Med. conc. = 1.42 0.60 0.070 0.100 0.040 16.0 12.0 75% conc. = 2.08 1.04 0.160 0.150 0.074 26.0 15.0 Max conc. = 5.89 5.00 3.000 1.000 0.464 165.0 19.0 Flow summaries are in the LOADEST2 diagnostic information TN_N = Total Nitrogen (as N) (Total Kjeldahl Nitrogen + Nitrate + Nitrite) NOx_N = Total Nitrate + Nitrite (as N) NHx_N = Dissolved Ammonia (as N) TP_P = Total Phosphorus (as P) SRP_P = Soluble Reactive Phosphorus (as P) (measured as Orthophosphate) TSS = Total Suspended Solids Cl = Dissolved Chloride (as Cl)