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

Site 35 - Tributary to Middle Branch Croton River - MBCUTRB1 - IMAGE Gallery Watershed Characteristics - Nutrient Chemistry - Molecular Tracers - Macroinvertebrates

Watershed Land Use/Land Cover Characteristics - Data Methodology Description Latitude(dd): 41.470629 Longitude(dd): -73.655240 Watershed Area: 26.9 km2 ------------------------------------------------------------------------------------------------ East of Hudson Land Use/Cover Map Impervious Agriculture Forest Water Wetland 4.33% 3.07% 89.30% 2.62% 6.87% -------------------------------------------------------------------------------------------------   1990 2000 Total Population 2432 2812 Population Density (ind./km2) 90.57 104.73 -------------------------------------------------------------------------------------------------   2000 2001 2002 # of SPDES Dischargers 4 4 4 Total Annual Volume (normalized for watershed area) 0.08 cm 0.10 cm 0.12 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 21AUG00 0.1119 21AUG00 0.1119 2001 21AUG01 0.0507 21AUG01 0.0507 2002 16JUL02 0.0162 16JUL02 0.0162 Data Table - Methodology   2000 QUAL 2001 QUAL 2002 QUAL pH 8.1   7.9   7.8   ALKL 84   125   105   COND 528   848   842   CA 30   .   .   MG 11   17   16   NA 61   97   97   K 2   5   3.5   CL 104   188   190   SO4 11   16   12   NH4N 0.011   0.009 B 0.009 B NO3N 0.2   0.3   0.2   ORGN 0.3   0.3   0.3   SKN 0.3   0.3   0.3   TKN 0.3   0.4   0.3   SRP 0.007   0.006   0.005   TDP 0.011   0.014   0.007 B TP 0.014   0.02   0.012   DOC 4385   3381   3508   BDOC .   51   181   TSS 10   1 B 1.6   TSS05 7.6   0.6   1.4   TSS10 2.5   0.1 B 0.2   TSS20 0.2   0.3 B 0.3 B VSS 1.9   0.2   0.5   VSS05 1.1   0.2 B 0.5   VSS10 0.7   0.04 B 0.06   VSS20 0.04   0.08 B 0.07 B   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 0.1119 2001 23AUG00 0.0477 --- --- 2002 15JUL02 0.0210 --- --- 2003     --- --- Data Table - Methodology   2000(SB) QUAL 2001(WB) QUAL 2001(SB) QUAL 2002(WB) QUAL 2002(SB) QUAL 2003(WB) QUAL FLU 0 NE .   0.002 E .   0.0015 E .   PHE 0.003 HE .   0.005 E .   0.005 E .   ANT 0.0007 HE .   0.007 E .   0.003 E .   2MP 0.0008 HE .   0.0007 E .   0.0008 E .   1MP 0.0009 HE .   0.0005 E .   0.0004 E .   FLR 0.003   .   0.004 E .   0.006 E .   PYR 0.003   .   0.003 E .   0.003 E .   BAA 0.003 HE .   0.00014 E .   0.0011 E .   CHR 0.0013   .   0.002 E .   0.0014 E .   BBF 0.00013 HE .   0.0014 E .   0.0012 E .   BKF 0.0011 HE .   0.0013 E .   0.0011 E .   BAP 0.0018 HE .   0.0016 E .   0.0009 E .   HHCB 0.004   .   0.001 E .   0.005 E .   AHTN 0 NE .   0.0009 E .   0.005 E .   CAF 0 NE .   0.0006 E .   0.004 E .   bCOP 0.02 HE .   0.006 E .   0.04   .   EPI 0 NE .   0.0007 E .   0.005 E .   CHO 0.4 HE .   0.4 E .   0.5   .   aCOP 0.08 HE .   0.05 E .   0.1   .   aONE 0.02 HE .   0.01 E .   0.018 E .   bONE 0 NE .   0.008 E .   0.03   .   SNOL 0.07 HE .   0.03 E .   0.07   .     Benthic Macroinvertebrates - Methodology Water Quality Score - WQS Definition