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Water Quality Monitoring in the Source Water Areas for NYC PHASE I Monitoring Sites

Site 45 - West Branch Croton River near Butterville - WBCBUTTR - IMAGE Gallery Watershed Characteristics - Nutrient Chemistry - Molecular Tracers - Macroinvertebrates

Watershed Land Use/Land Cover Characteristics - Data Methodology Description Latitude(dd): 41.352215 Longitude(dd): -73.671041 Watershed Area: 209.1 km2 ------------------------------------------------------------------------------------------------ East of Hudson Land Use/Cover Map Impervious Agriculture Forest Water Wetland 6.64% 3.56% 80.11% 9.09% 5.87% -------------------------------------------------------------------------------------------------   1990 2000 Total Population 30453 34105 Population Density (ind./km2) 145.65 163.12 -------------------------------------------------------------------------------------------------   2000 2001 2002 # of SPDES Dischargers 16 16 15 Total Annual Volume (normalized for watershed area) 0.60 cm 0.61 cm 0.63 cm Ions, Nutrients, DOC/BDOC, and Particulates - click here for abbreviations/units Sampling Dates and Discharge (Q) - Realtime Flow Monitoring   Ions/Nutr & DOC/BDOC Organic Particles Date Q - m3/s Date Q - m3/s 2000 22AUG00 0.7180 22AUG00 0.7180 2001 07SEP01 0.1338 07SEP01 0.1338 2002 30JUL02 0.2415 14AUG02 0.2415 Data Table - Methodology   2000 QUAL 2001 QUAL 2002 QUAL pH 7.6   7.5   7.5   ALKL 50   52   59   COND 285   321   341   CA 19   .   .   MG 6.6   6.6   7.7   NA 25   33   30   K 1.8   2   2.2   CL 45   59   49   SO4 13   11   13   NH4N 0.007 B 0.015   0.02   NO3N 0.3   0.3   0.2   ORGN 0.2   0.2   0.2   SKN 0.2   0.2   0.2   TKN 0.2   0.3   0.3   SRP 0.002 B 0.001 B 0.001 B TDP 0.003 B 0.003 B 0.005 B TP 0.008 B 0.008 B 0.01   DOC 3276   2640   3046   BDOC .   . V 228   TSS 3   1.7   2.4   TSS05 2.3   1.4   2.4   TSS10 0.5   0.3   0.4   TSS20 0.2   0.3 B 0.5   VSS 1.1   1.5   1.3   VSS05 0.8   1.5   1.1   VSS10 0.1   0.1   0.1   VSS20 0.08   0.2   0.2     Molecular Tracer Analysis - click here for abbreviations/units Sampling Dates and Discharges (Q) - Realtime Flow Monitoring   Summer Baseflow Winter Baseflow Date Q - m3/s Date Q - m3/s 2000 21AUG00 0.8710 2001 24AUG01 0.3966 --- --- 2002 13AUG02 0.2005 --- --- 2003     --- --- Data Table - Methodology   2000(SB) QUAL 2001(WB) QUAL 2001(SB) QUAL 2002(WB) QUAL 2002(SB) QUAL 2003(WB) QUAL FLU 0.0008 HE .   0.0011 HE .   0.002 E .   PHE 0.002   .   0.0014 HE .   0.004 E .   ANT 0.0012 HE .   0.0011 HE .   0.0009 E .   2MP 0.013 HE .   0.009 HE .   0.0019 E .   1MP 0.004 HE .   0.001 HE .   0.0008 E .   FLR 0.002 HE .   0.003 HE .   0.004 E .   PYR 0.0015 HE .   0.0007 HE .   0.0014 E .   BAA 0.0016 HE .   0.0007 HE .   0.0008 E .   CHR 0.0008 HE .   0.0002 HE .   0.0005 E .   BBF 0.0007 HE .   0.0005 HE .   0.0008 E .   BKF 0.0005 HE .   0.00005 HE .   0.0006 E .   BAP 0.0007 HE .   0.00014 HE .   0.0007 E .   HHCB 0.01   .   0.009   .   0.004 E .   AHTN 0.005 HE .   0.007 HE .   0.006 E .   CAF 0.04 HE .   0.00003 E .   0.02   .   bCOP 0.012 HE .   0.007 HE .   0.02   .   EPI 0.006 HE .   0.0014 HE .   0.007 E .   CHO 0.7 HE .   0.5   .   1   .   aCOP 0.05 HE .   0.02   .   0.2   .   aONE 0.015 HE .   0.008   .   0.03   .   bONE 0.04 HE .   0.02   .   0.09   .   SNOL 0.1 HE .   0.03   .   0.07   .     Benthic Macroinvertebrates - Methodology Water Quality Score - WQS Definition