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

Site 18 - Schoharie Creek near Lexington - SCHLEXTN - IMAGE Gallery Watershed Characteristics - Nutrient Chemistry - Molecular Tracers - Macroinvertebrates

Watershed Land Use/Land Cover Characteristics - Data Methodology Description Latitude(dd): 42.238506 Longitude(dd): -74.339876 Watershed Area: 250.1 km2 ------------------------------------------------------------------------------------------------ West of Hudson Land Use/Cover Map Impervious Agriculture Forest Water Wetland 0.55% 10.12% 88.57% 0.75% 1.21% -------------------------------------------------------------------------------------------------   1990 2000 Total Population 2626 2861 Population Density (ind./km2) 10.50 11.44 -------------------------------------------------------------------------------------------------   2000 2001 2002 # of SPDES Dischargers 11 11 11 Total Annual Volume (normalized for watershed area) 0.21 cm 0.16 cm 0.18 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 08AUG00 1.4509 08AUG00 1.4509 2001 25JUL01 0.2984 25JUL01 0.2984 2002 17JUL02 0.3049 17JUL02 0.3049 Data Table - Methodology   2000 QUAL 2001 QUAL 2002 QUAL pH 8.1   8.1   9.1   ALKL 18   24   24   COND 67   108   107   CA 6.3   .   .   MG 0.9   1.4   1.4   NA 4.5   8.8   8.4   K 0.4 B 0.6   0.6   CL 6.3   14   13   SO4 5.2   5.5   5.7   NH4N 0.005 B 0.013   0.006 B NO3N 0.1   0.08   0.08   ORGN 0.1   0.08   0.1   SKN 0.1   0.09   0.1   TKN 0.1   0.1   0.2   SRP 0.002 B 0 B 0.002 B TDP 0.003 B 0.004 B 0.003 B TP 0.004 B 0.005 B 0.006 B DOC 1508   1544   1576   BDOC .   398   206   TSS 1.3 B 0.9 B 1.5   TSS05 1 B 0.8   1.6   TSS10 0.3   0.1 B 0.1 B TSS20 0.04   0.2 B 0.2 B VSS 0.5   0.5   0.4   VSS05 0.4   0.4   0.5   VSS10 0.09   0.05 B 0.05 B VSS20 0.011   0.07 B 0.06 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 08AUG00 1.4509 --- --- 2001 30JUL01 0.3977 21FEB01 4.2890 2002 16JUL02 0.3049 13FEB02 5.4180 2003     28JAN03 0.9034 Data Table - Methodology   2000(SB) QUAL 2001(WB) QUAL 2001(SB) QUAL 2002(WB) QUAL 2002(SB) QUAL 2003(WB) QUAL FLU 0 NE 0.0008 HE 0.0004 E 0.0009 E 0.004 E 0.0005 E PHE 0 NE 0.002   0.0012 E 0.002 E 0.015 E 0.0013 E ANT 0.0002 E 0 E 0.0006 E 0.0007 E 0.0014 E 0.0003 E 2MP 0 NE 0.0014 HE 0.004 E 0.002 E 0.018 E 0.0016 E 1MP 0 NE 0.0003 HE 0.0003 E 0.0003 E 0.011 E 0 E FLR 0.0008 E 0.0012 HE 0.0011 E 0.0012 E 0.014 E 0.0007 E PYR 0 NE 0.0006 HE 0.0005 E 0.0007 E 0.05   0.0003 E BAA 0 NE 0.0005 HE 0.0006 E 0.00016 E 0.0011 E 0.0003 E CHR 0 NE 0.00018 HE 0.0003 E 0.0003 E 0.0006 E 0.00015 E BBF 0 NE 0 NE 0.0004 E 0.0004 E 0.0005 E 0 NE BKF 0 NE 0 NE 0 NE 0.0004 E 0.002 E 0 NE BAP 0.002   0 NE 0.0002 E 0.0003 E 0.00006 E 0 NE HHCB 0.003   0.008   0.002 E 0.006 E 0.009 E 0.002 E AHTN 0.013 E 0.06 HE 0 NE 0.003 E 0.014 E 0.0004 E CAF 0 NE 0.014   0.004 E 0.002 E 0.012 E 0.04   bCOP 0.012   0.012   0.006 E 0.012 E 0.02   0.019   EPI 0 NE 0.005 HE 0 NE 0.003 E 0.006 E 0.003 E CHO 0.4   0.08   0.2 E 0.1   0.6   0.2   aCOP 0.08 E 0.013   0.04 E 0.02   0.1   0.02   aONE 0.008   0.0018 HE 0.009 E 0.003 E 0.02 E 0.04   bONE 0 NE 0.015   0.011 E 0.014   0.04 E 0.04   SNOL 0.04   0.02   0.019 E 0.03   0.07   0.02     Benthic Macroinvertebrates - Methodology Water Quality Score - WQS Definition