The following tables are summaries of stream chemistry from 2 sites on Wappinger Creek at the Cary Institute and hydrological data, including stream temperature, gauge height and discharge from the gauging station at the Fern Glen. For data summaries not presented here, please contact Vicky Kelly at KellyV@caryinstitute.org.

ANNUAL MEAN CONCENTRATIONS (mg/L), CONDUCTIVITY (µmho) & DISCHARGE (m^3/s) - Wappinger Creek, Fern Glen (Site 2)

YEAR H Ca Cl K Mg Na NH4 NO3 PO4 SO4 SiO2 Conductivity Q
1985 0.018 35.4 25.2 1.4 10 8.4 0.01 3.26 0.062 26.0 7.8 295 .
1986 0.016 32.2 15.8 1.2 9.2 8.0 0.02 3.06 0.066 16.4 6.6 264 0.90
1987 0.012 32.8 17.7 1.2 9.3 9.2 0.02 3.83 0.149 16.7 5.5 293 0.94
1988 0.013 31.3 18.5 1.2 8.8 9.4 0.01 3.17 0.092 16.1 5.3 268 1.14
1989 0.017 29.9 18.0 1.3 8.4 9.6 0.04 3.05 0.090 15.4 4.8 259 0.92
1990 0.009 31.0 18.0 1.2 8.7 10.0 0.02 3.33 0.073 14.5 4.9 266 1.43
1991 0.008 31.0 17.5 1.2 8.7 10.1 0.02 3.18 0.116 16.3 5.0 265
1992 0.007 33.4 20.3 1.2 9.5 11.1 0.02 3.69 0.122 13.9 4.3 287
1993 0.011 31.9 25.5 1.3 9.2 12.8 0.02 3.11 0.179 16.2 4.0 294 0.77
1994 0.011 31.9 24.0 1.1 8.6 12.6 0.01 1.92 0.068 14.1 5.6 284 1.07
1995 0.010 33.2 24.4 1.2 8.8 13.7 0.02 1.97 0.120 15.6 3.9 296 1.26
1996 0.010 30.4 25.1 0.9 7.9 13.6 0.01 1.02 0.015 13.5 3.0 274 1.22
1997 0.008 34.6 27.1 1.3 9.6 15.3 0.01 2.94 0.073 17.4 3.9 313 0.64
1998 0.009 37.2 29.8 1.2 9.9 16.6 0.01 3.52 0.142 18.4 4.3 334 0.70
1999 0.009 33.0 30.5 1.1 8.7 16.4 0.03 3.88 0.249 18.8 5.8 304 0.79
2000 0.009 32.9 28.3 1.0 8.9 16.4 0.03 2.46 0.134 13.9 5.6 304 0.90
2001 0.007 38.5 41.9 1.4 11 23.6 0.04 5.71 0.346 18.1 5.4 382 0.40
2002 0.008 37.9 45.6 1.3 10 25.1 0.01 4.05 0.348 18.9 4.8 350 0.37
2003 0.009 30.2 36.8 1.2 7.9 20.2 0.04 2.52 0.179 13.1 5.8 300 1.45
2004 0.007 33.5 37.3 1.2 9.0 21.4 0.02 2.49 0.207 13.4 5.6 334 0.71
2005 0.009 31.8 45.9 1.2 8.9 27.3 0.03 4.48 0.294 13.6 5.4 366 1.18
2006 0.007 30.4 28.0 1.0 8.1 17.7 0.01 2.29 0.119 12.2 5.1 283 0.72
2007 0.008 31.6 31.3 1.3 9.1 20.6 0.04 3.07 0.191 13.1 5.4 296 0.79
2008 0.009 31.7 34.4 1.2 8.5 21.0 0.01 2.74 0.193 12.0 5.2 291 0.78
2009 0.009 33.4 35.1 1.2 8.8 21.1 0.02 2.21 0.142 11.4 5.4 318 1.09
2010 0.010 32.0 39.1 1.4 9.2 24.3 0.02 4.33 0.263 13.3 5.3 335 0.67
2011 0.008 30.0 32.0 1.1 7.7 20.5 0.04 2.36 0.138 10.8 6.4 289 1.07
2012 0.007 31.5 26.7 1.2 8.7 19.4 0.04 2.55 0.163 10.5 6.0 290 0.55
2013 0.006 31.6 29.5 1.2 8.3 19.6 0.04 2.43 0.102 10.1 5.2 295 0.93

ANNUAL MEAN CONCENTRATIONS (mg/L) & CONDUCTIVITY (µmho) - Wappinger Creek, Lowlands (Site 4)

YEAR H Ca Cl K Mg Na NH4 NO3 PO4 SO4 SiO2 Conductivity
1985 0.012 36.2 25.4 1.2 8.7 11.7 0.03 3.66 0.092 23.3 6.4 305
1986 0.019 33.2 20.5 1.2 8.6 10.4 0.02 3.22 0.044 18.1 6.9 276
1987 0.012 34.1 21.8 1.1 8.7 11.5 0.02 3.58 0.094 18.4 5.9 293
1988 0.014 32.9 23.2 1.2 8.3 12.2 0.01 3.42 0.094 18.0 5.8 283
1989 0.016 31.4 23.4 1.3 7.9 12.5 0.04 3.40 0.043 17.2 5.2 280
1990 0.010 32.3 23.7 1.2 8.1 13.0 0.02 3.62 0.078 16.5 5.7 276
1991 0.009 32.3 22.4 1.1 8.1 13.0 0.02 3.39 0.056 18.2 5.5 285
1992 0.012 34.6 24.1 1.1 8.8 14.1 0.02 3.27 0.055 16.5 5.2 305
1993 0.017 33.9 31.2 1.2 8.5 15.8 0.02 2.63 0.029 17.8 5.1 316
1994 0.015 34.0 30.2 1.1 8.1 16.3 0.01 2.18 0.032 16.1 6.1 311
1995 0.014 34.6 29.3 1.1 8.3 16.2 0.02 1.95 0.037 17.0 3.4 314
1996 0.012 32.1 30.4 1.0 7.5 16.9 0.01 2.16 0.012 15.2 5.2 299
1997 0.009 35.3 31.5 1.2 8.7 17.4 0.02 2.27 0.023 17.6 4.8 321
1998 0.010 37.2 33.1 1.0 8.9 18.5 0.01 2.29 0.053 18.2 4.7 337
1999 0.010 34.3 35.4 1.0 8.0 19.2 0.02 2.32 0.100 18.6 5.7 328
2000 0.008 34.4 32.8 0.9 8.4 19.0 0.05 2.43 0.088 14.9 5.9 324
2001 0.006 39.1 42.7 1.1 9.7 23.1 0.03 3.25 0.125 17.8 6.0 377
2002 0.008 38.7 48.8 1.1 9.2 25.9 0.01 2.57 0.152 19.4 5.3 359
2003 0.008 31.8 42.1 1.1 7.4 23.2 0.03 2.59 0.115 14.4 6.2 321
2004 0.008 34.3 42.2 1.1 8.3 24.2 0.01 2.51 0.141 14.5 6.1 353
2005 0.009 32.3 47.6 1.1 7.9 27.5 0.02 3.41 0.121 14.4 6.0 369
2006 0.008 31.4 32.4 0.9 7.6 20.6 0.01 2.17 0.073 13.1 5.5 300
2007 0.009 32.3 33.9 1.1 8.3 22.2 0.03 3.04 0.162 13.5 6.0 303
2008 0.010 32.4 38.1 1.1 7.9 23.4 0.01 2.40 0.110 12.7 5.6 300
2009 0.010 34.4 39.4 1.1 8.2 24.4 0.02 2.04 0.089 12.1 6.0 334
2010 0.010 32.7 40.8 1.2 8.2 25.2 0.02 2.53 0.107 13.2 6.0 330
2011 0.010 30.9 36.0 1.1 7.2 23.6 0.05 2.25 0.085 11.4 6.8 301
2012 0.009 32.4 29.8 1.1 8.0 21.9 0.04 2.08 0.088 11.3 6.4 299
2013 0.009 32.1 33.8 1.1 7.5 22.7 0.05 2.18 0.058 11.0 5.7 307

MONTHLY MEAN CONCENTRATIONS (mg/L), CONDUCTIVITY (µmho) & DISCHARGE (m^3/s) - Wappinger Creek, Fern Glen (Site 2) 1986-2013

MONTH H Ca Cl K Mg Na NH4 NO3 PO4 SO4 SiO2 Conductivity Q
1 0.012 30.9 27.3 1.1 8.3 15.5 0.02 3.94 0.094 16.2 5.9 288 1.96
2 0.012 30.6 30.3 1.0 8.3 16.7 0.04 3.73 0.097 15.8 5.3 291 1.35
3 0.012 27.6 30.1 0.9 7.3 16.8 0.02 2.43 0.056 14.2 3.7 270 1.38
4 0.007 30.0 26.9 0.9 7.9 15.0 0.02 1.50 0.055 13.7 2.7 278 1.04
5 0.008 31.5 27.5 0.9 8.5 15.6 0.02 1.84 0.117 12.7 4.0 286 0.75
6 0.008 34.2 28.3 1.0 9.4 16.4 0.02 2.45 0.171 11.8 4.8 309 0.45
7 0.008 35.1 31.1 1.2 9.9 18.6 0.02 3.40 0.257 12.4 5.5 327 0.44
8 0.008 36.6 33.2 1.4 10 20.0 0.02 4.68 0.381 14.2 6.3 345 0.34
9 0.008 37.1 31.0 1.6 10 18.9 0.02 3.59 0.254 15.7 5.9 335 0.36
10 0.009 35.6 28.6 1.7 9.9 16.9 0.02 3.08 0.187 16.4 5.5 323 0.93
11 0.011 31.1 25.1 1.4 8.6 14.9 0.02 2.65 0.115 15.8 5.6 285 0.81
12 0.012 30.2 25.8 1.1 8.3 14.7 0.03 3.30 0.092 16.4 6.0 276 1.43

MONTHLY MEAN CONCENTRATIONS (mg/L) & CONDUCTIVITY (µmho) - Wappinger Creek, Lowlands (Site 4) 1985-2013

MONTH H Ca Cl K Mg Na NH4 NO3 PO4 SO4 SiO2 Conductivity
1 0.013 32.3 32.5 1.0 7.8 18.5 0.02 4.02 0.071 17.5 6.3 308
2 0.012 32.4 37.0 1.0 7.9 20.4 0.03 4.02 0.064 17.2 5.8 317
3 0.012 29.1 34.7 0.9 6.9 19.5 0.02 2.83 0.042 15.7 4.5 291
4 0.008 31.4 31.7 0.9 7.4 17.8 0.03 1.92 0.035 15.2 3.5 296
5 0.009 32.8 31.1 0.9 7.9 18.0 0.03 2.06 0.078 14.5 4.9 301
6 0.010 35.1 31.5 1.0 8.7 18.4 0.02 2.21 0.103 13.5 5.6 318
7 0.011 35.7 32.2 1.1 8.9 19.1 0.02 2.30 0.110 13.9 6.1 324
8 0.011 37.1 34.0 1.2 9.2 19.9 0.02 2.64 0.125 15.2 6.6 342
9 0.011 37.7 33.8 1.4 9.4 20.2 0.02 2.58 0.149 16.4 6.5 341
10 0.011 36.5 32.5 1.5 9.1 19.0 0.02 2.08 0.078 17.3 6.0 331
11 0.011 32.6 30.2 1.3 8.1 17.8 0.02 2.46 0.059 16.8 6.2 304
12 0.012 31.3 31.0 1.0 7.7 17.7 0.02 3.41 0.059 17.1 6.5 294

1993-2015 WAPPINGER CREEK AVERAGE FLOW, STAGE HEIGHT & TEMPERATURE

Year Q (cfs) Height (ft) Temp (F)
1993 18 0.25 54
1994 35 0.60 52
1995 52 0.62 50
1996 49 0.76 50
1997 26 0.87 49
1998 31 0.94 51
1999 23 0.82 53
2000 29 0.98 53
2001 24 0.70 51
2002 9 0.52 56
2003 49 1.08 50
2004 34 0.90 52
2005 42 0.89 53
2006 33 0.96 53
2007 30 0.83 51
2008 37 0.94 51
2009 37 0.98 51
2010 34 0.89 51
2011 50 1.08 52
2012 20 0.81 53
2013 33 0.95 52
2014 ND ND ND
2015 32 0.90 54