By Valerie J. Kelly, Richard P. Hooper, Brent T. Aulenbach, and Mary Janet
Daily Mean Streamflow
Units N Min 5th 25th Median 75th 95th Max Cubic feet per second 1,827 30,500 43,700 63,800 94,700 170,000 270,000 356,000 Cubic meters per second 1,827 864 1,237 1,807 2,682 4,814 7,646 10,081
Field Parameters, Turbidity, and Suspended Sediment
Units in milligrams per liter, except where noted
Parameter N Min 5th 25th Median 75th 95th Max 00010 Temperature (C) 57 0.6 1.7 7.0 13.9 23.3 28.5 30.7 00076 Turbidity (NTU) 57 0.5 4.7 16.0 26.0 65.0 140.0 205.0 00095 Conductance (uS/cm) 57 299.0 303.0 435.0 470.0 519.0 620.0 650.0 00300 Dissolved oxygen 57 5.7 6.6 7.8 9.7 12.5 15.2 16.9 00400 pH (standard units) 57 7.3 7.5 7.9 8.0 8.1 8.7 9.0 00452 CO3 (filtered) 52 0.0 0.0 0.0 0.0 0.0 6.0 12.0 00453 HCO3 (filtered) 52 136.0 150.0 178.0 188.0 201.0 231.0 382.0 39086 Alk (filtered, as CaCO3) 52 112.0 123.0 146.0 154.0 166.0 189.0 313.0 70331 % finer than 62 microns 53 70.0 78.0 91.0 96.0 98.0 99.0 99.2 80154 Suspended sediment 53 11.5 22.5 69.0 139.0 250.0 463.0 631.0
Nutrients and Organic Carbon, dissolved (filtered at 0.45 microns) and whole-water (unfiltered)
Units in milligrams per liter
Note: because of changes in reporting levels (RL), all censored data in this summary are converted to the highest RL reported for this station
Percent
Parameter RL N Detections Min 5th 25th Median 75th 95th Max
00608 NH3-N .020 57 54 < 0.020 < 0.020 < 0.020 0.024 0.056 0.235 0.480
00613 NO2-N .010 57 98 < 0.010 0.010 0.022 0.032 0.047 0.098 0.197
00623 Org+NH3-N (filtered) .200 54 100 0.346 0.353 0.391 0.461 0.539 0.736 1.200
00625 Org+NH3-N (whole-water) .100 57 98 < 0.100 0.528 0.735 0.952 1.142 1.608 3.300
00631 NO2+NO3-N .050 57 100 0.664 1.188 2.247 3.217 4.581 5.471 6.627
00665 Total P (whole-water) .050 57 96 < 0.050 0.122 0.177 0.229 0.313 0.519 0.940
00666 Total P (filtered) .010 57 100 0.042 0.049 0.090 0.108 0.140 0.170 0.178
00671 PO4-P .010 57 100 0.019 0.027 0.080 0.098 0.123 0.153 0.172
00681 DOC .330 51 98 < 0.330 4.200 4.937 5.600 6.062 7.145 7.800
00689 SOC .200 53 100 0.300 0.511 1.100 1.800 2.400 4.229 7.000
Major Ions, dissolved (filtered at 0.45 microns)
Units in milligrams per liter, except where noted
Percent
Parameter RL N Detections Min 5th 25th Median 75th 95th Max
00915 Calcium .020 57 100 34.57 39.00 45.60 48.40 53.80 58.13 65.06
00925 Magnesium .010 57 100 12.42 14.00 18.28 20.76 21.91 24.57 25.07
00930 Sodium .200 57 100 8.663 10.11 12.72 15.00 20.05 26.66 28.78
00935 Potassium .010 57 100 1.660 1.880 2.710 2.970 3.250 4.320 5.610
00940 Chloride .010 57 100 15.10 16.95 20.61 24.15 30.60 41.26 50.65
00945 Sulfate .010 57 100 23.16 25.28 29.94 34.57 39.21 45.58 47.32
00950 Fluoride .100 57 98 < 0.100 0.158 0.192 0.209 0.249 0.296 0.364
00955 Silica .010 57 100 0.583 2.000 6.997 8.283 9.720 11.24 13.52
Trace Elements, dissolved (filtered at 0.45 microns)
Units in micrograms per liter
Note: because of changes in reporting levels (RL), all censored data in this summary are converted to the highest RL reported for this station
Percent
Parameter RL N Detections Min 5th 25th Median 75th 95th Max
01000 Arsenic 1.0 8 63 < 1.0 < 1.0 < 1.0 1.2 1.9 2.1 2.1
01005 Barium 1.0 16 100 42.0 42.0 50.4 54.2 63.6 305.7 305.7
01010 Beryllium 1.0 5 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01020 Boron 16.0 8 100 36.5 36.5 38.8 51.6 77.3 84.5 84.5
01025 Cadmium 8.0 8 0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0 < 8.0
01030 Chromium 0.8 5 80 < 0.8 < 0.8 1.4 1.7 2.2 2.2 2.2
01035 Cobalt 3.0 16 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01040 Copper 10.0 8 63 < 10.0 < 10.0 < 10.0 2.0 10.0 10.0 10.0
01046 Iron 10.0 22 86 < 10.0 < 10.0 10.0 24.4 41.7 154.9 169.6
01049 Lead 100 8 0 < 100.0 < 100.0 < 100.0 < 100.0 < 100.0 < 100.0 < 100.0
01056 Manganese 1.0 19 95 < 1.0 < 1.0 2.0 3.4 7.3 22.0 22.0
01060 Molybdenum 10.0 16 31 < 10.0 < 10.0 < 10.0 < 10.0 10.0 10.0 10.0
01065 Nickel 1.0 16 88 < 1.0 < 1.0 1.1 1.5 2.0 4.8 4.8
01075 Silver 1.0 16 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01080 Strontium 0.5 19 100 83.2 83.2 100.1 120.0 133.6 139.5 139.5
01085 Vanadium 10.0 19 5 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 10.0 10.0
01090 Zinc 20.0 8 75 < 20.0 < 20.0 < 20.0 15.2 21.5 37.3 37.3
01095 Antimony 1.0 5 20 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 3.4 3.4
01106 Aluminum 5.0 19 79 < 5.0 < 5.0 5.0 16.3 49.8 107.0 107.0
01130 Lithium 4.0 19 79 < 4.0 < 4.0 4.0 5.0 6.2 8.5 8.5
01145 Selenium 1.0 19 11 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.8 1.8
22703 Uranium 1.0 5 100 1.0 1.0 1.1 1.9 1.9 2.1 2.1
Pesticides, dissolved (filtered at 0.7 microns)
Units in micrograms per liter, except where noted
Note: concentrations sometimes are estimated below the reporting level (RL); in this summary, all censored and estimated concentrations are converted to highest RL reported for this station; the percent detections described in the table include estimated concentrations, when appropriate
Percent
Parameter RL N Detections Min 5th 25th Median 75th 95th Max
04024 Propachlor .010 53 2 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010
04028 Butylate .002 53 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .011 53 77 < 0.011 < 0.011 0.005 0.008 0.026 0.051 0.060
04037 Prometon .018 53 83 < 0.018 < 0.018 0.006 0.010 0.016 0.018 0.019
04040 Desethyl atrazine .002 53 100 0.004 0.005 0.017 0.035 0.082 0.212 0.303
04041 Cyanazine .018 53 72 < 0.018 < 0.018 < 0.018 0.016 0.085 0.366 1.260
04095 Fonofos .003 53 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .005 53 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
34653 p,p DDE .006 53 2 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.006
38933 Chlorpyrifos .020 52 2 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.020
39341 gamma-HCH .004 53 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39381 Dieldrin .005 53 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
39415 Metolachlor .002 53 100 0.020 0.028 0.067 0.142 0.565 1.750 2.820
39532 Malathion .027 53 0 < 0.027 < 0.027 < 0.027 < 0.027 < 0.027 < 0.027 < 0.027
39542 Parathion .007 53 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
39572 Diazinon .010 53 49 < 0.010 < 0.010 < 0.010 < 0.010 0.005 0.012 0.017
39632 Atrazine .001 53 100 0.073 0.078 0.135 0.226 1.790 4.120 5.960
46342 Alachlor .002 53 85 < 0.002 < 0.002 0.006 0.011 0.025 0.070 0.122
49260 Acetochlor .020 52 88 < 0.020 < 0.020 0.018 0.064 0.259 0.901 1.800
82630 Metribuzin .020 53 19 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.021 0.073
82660 Diethylanaline .003 53 2 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 0.005
82661 Trifluralin .009 53 4 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 0.009
82663 Ethalfluralin .009 53 0 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009 < 0.009
82664 Phorate .011 53 0 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011
82665 Terbacil .034 53 0 < 0.034 < 0.034 < 0.034 < 0.034 < 0.034 < 0.034 < 0.034
82666 Linuron .035 53 2 < 0.035 < 0.035 < 0.035 < 0.035 < 0.035 < 0.035 0.035
82667 Methyl parathion .050 53 0 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050
82668 EPTC .002 53 11 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.005 0.005
82669 Pebulate .004 53 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .016 53 2 < 0.016 < 0.016 < 0.016 < 0.016 < 0.016 < 0.016 0.016
82671 Molinate .004 53 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .005 53 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
82673 Benfluralin .010 53 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82674 Carbofuran .020 53 9 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.035 0.100
82675 Terbufos .017 53 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82676 Pronamide .020 53 0 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020
82677 Disulfoton .021 53 0 < 0.021 < 0.021 < 0.021 < 0.021 < 0.021 < 0.021 < 0.021
82678 Triallate .002 53 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82679 Propanil .011 53 0 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011 < 0.011
82680 Carbaryl .041 53 2 < 0.041 < 0.041 < 0.041 < 0.041 < 0.041 < 0.041 0.044
82681 Thiobencarb .005 53 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
82682 Dachthal (DCPA) .003 53 9 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 0.002 0.016
82683 Pendimethalin .010 53 2 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.023
82684 Napropamide .007 53 2 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 0.022
82685 Propargite .023 53 0 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023
82686 Azinphos methyl .050 53 0 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050
82687 Permethrin .006 53 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
91063 Diazinon-d10 (%) .100 53 100 0.000 1.730 85.64 94.19 104.6 117.5 165.1
91064 Terbuthylazin (%) .100 38 100 0.000 0.067 88.50 97.75 110.3 130.8 159.8
91065 HCH alpha-D6 (%) .100 53 100 0.000 2.130 80.51 89.47 97.84 115.2 137.6
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