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 42 302 1,010 1,150 1,360 3,710 9,360 Cubic meters per second 1,827 1 9 29 33 39 105 265
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) 29 11.5 12.0 14.0 19.0 22.2 26.0 26.0 00076 Turbidity (NTU) 29 0.1 0.2 0.5 0.6 1.7 2.0 12.0 00095 Conductance (uS/cm) 29 645.0 739.0 1070.0 1160.0 1210.0 1360.0 1370.0 00300 Dissolved oxygen 29 1.6 2.1 3.5 5.8 8.1 9.9 10.1 00400 pH (standard units) 29 7.2 7.2 7.6 7.7 7.9 8.2 8.3 00452 CO3 (filtered) 29 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00453 HCO3 (filtered) 29 113.0 131.0 144.0 153.0 156.0 168.0 203.0 39086 Alk (filtered, as CaCO3) 29 93.0 107.0 116.0 124.0 128.0 133.0 137.0 70331 % finer than 62 microns 28 53.3 78.1 84.8 92.8 98.7 100.0 100.0 80154 Suspended sediment 28 1.0 1.0 3.0 4.0 7.5 18.0 20.0
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 29 69 < 0.020 < 0.020 < 0.020 0.022 0.030 0.065 0.119
00613 NO2-N .010 29 41 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.013 0.299
00623 Org+NH3-N (filtered) .200 29 62 < 0.200 < 0.200 < 0.200 0.200 0.200 0.246 0.353
00625 Org+NH3-N (whole-water) .200 29 72 < 0.200 < 0.200 < 0.200 0.200 0.224 0.300 0.402
00631 NO2+NO3-N .050 29 100 0.109 0.133 0.188 0.270 0.415 0.539 1.012
00665 Total P (whole-water) .050 29 52 < 0.050 < 0.050 < 0.050 0.010 0.013 0.075 0.080
00666 Total P (filtered) .050 29 10 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 0.020 0.050
00671 PO4-P .001 29 55 < 0.001 < 0.001 < 0.001 0.001 0.001 0.007 0.009
00681 DOC .300 29 100 1.900 1.938 2.000 2.134 2.500 3.800 4.400
00689 SOC .200 28 57 < 0.100 < 0.100 < 0.200 0.200 0.200 0.300 0.600
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 29 100 56.92 65.87 69.82 72.97 78.00 81.00 82.21
00925 Magnesium .010 29 100 10.07 18.53 20.60 21.88 23.00 26.00 27.00
00930 Sodium .200 29 100 51.95 98.10 110.0 124.4 133.2 150.0 170.0
00935 Potassium .010 29 100 3.370 3.880 4.490 4.840 5.190 5.500 5.700
00940 Chloride .010 29 100 60.86 126.1 137.6 157.2 165.0 200.0 200.0
00945 Sulfate .010 29 100 93.66 171.4 195.2 220.0 230.0 250.0 260.0
00950 Fluoride .100 29 100 0.389 0.606 0.682 0.786 0.866 0.900 1.000
00955 Silica .010 29 100 10.89 10.93 11.89 12.64 13.76 16.00 16.00
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 29 100 1.6 1.7 2.0 2.1 2.9 4.1 5.0
01005 Barium 1.0 17 100 70.8 70.8 118.8 120.8 127.0 139.0 139.0
01010 Beryllium 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01020 Boron 16.0 29 100 96.6 135.3 154.0 163.9 171.0 206.0 207.0
01025 Cadmium 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01030 Chromium 1.0 17 94 < 1.0 < 1.0 1.0 1.7 2.3 3.0 3.0
01035 Cobalt 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01040 Copper 1.0 17 59 < 1.0 < 1.0 < 1.0 1.0 1.3 2.0 2.0
01046 Iron 10.0 29 0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0
01049 Lead 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01056 Manganese 1.0 17 100 1.6 1.6 3.0 11.9 32.0 173.0 173.0
01060 Molybdenum 1.0 17 100 3.4 3.4 7.0 7.2 7.5 8.0 8.0
01065 Nickel 1.0 17 100 1.0 1.0 1.2 1.6 2.0 3.0 3.0
01075 Silver 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01080 Strontium 0.5 29 100 726.2 1097 1199 1321 1400 1500 1600
01085 Vanadium 10.0 29 24 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 10.0 10.2
01090 Zinc 1.0 17 71 < 1.0 < 1.0 < 1.0 1.9 3.0 6.0 6.0
01095 Antimony 1.0 17 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01106 Aluminum 1.0 17 53 < 1.0 < 1.0 < 1.0 1.0 1.8 3.0 3.0
01130 Lithium 4.0 29 100 20.7 36.6 41.8 47.9 50.8 60.0 62.0
01145 Selenium 2.4 29 7 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 2.4 2.4
22703 Uranium 1.0 17 100 1.6 1.6 3.4 3.6 4.0 4.0 4.0
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 .007 29 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
04028 Butylate .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .005 29 7 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.005 0.005
04037 Prometon .018 29 17 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 0.018 0.018
04040 Desethyl atrazine .002 29 3 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002
04041 Cyanazine .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04095 Fonofos .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 29 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
38933 Chlorpyrifos .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39341 gamma-HCH .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39381 Dieldrin .001 29 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
39532 Malathion .005 29 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
39542 Parathion .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .002 29 14 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.004 0.010
39632 Atrazine .005 29 45 < 0.005 < 0.005 < 0.005 < 0.005 0.003 0.005 0.005
46342 Alachlor .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
49260 Acetochlor .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82660 Diethylanaline .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82663 Ethalfluralin .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .007 29 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
82666 Linuron .002 28 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .006 28 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
82668 EPTC .002 28 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82669 Pebulate .004 28 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .010 28 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82671 Molinate .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82674 Carbofuran .010 29 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82675 Terbufos .023 29 0 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023 < 0.023
82676 Pronamide .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82677 Disulfoton .017 29 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 29 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82681 Thiobencarb .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 29 3 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002
82683 Pendimethalin .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82684 Napropamide .003 29 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .040 28 0 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040
82686 Azinphos methyl .010 29 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82687 Permethrin .005 29 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
91063 Diazinon-d10 (%) .100 29 100 72.70 76.00 85.29 100.3 109.4 115.4 116.2
91064 Terbuthylazin (%) .100 20 100 85.70 89.96 99.25 104.7 115.4 118.7 119.2
91065 HCH alpha-D6 (%) .100 29 100 75.20 79.28 90.19 93.97 101.6 105.3 108.8
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