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 65 99 124 160 310 16,100 Cubic meters per second 1,827 1 2 3 4 5 9 456
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) 49 10.0 11.0 18.0 25.0 29.0 30.5 30.7 00076 Turbidity (NTU) 49 0.2 0.2 0.3 0.5 1.0 7.5 660.0 00095 Conductance (uS/cm) 49 716.0 996.0 2800.0 3290.0 3940.0 4760.0 5200.0 00300 Dissolved oxygen 49 6.3 6.9 7.3 8.3 9.5 10.7 11.0 00400 pH (standard units) 49 7.5 7.8 7.9 8.0 8.1 8.2 8.5 00452 CO3 (filtered) 49 0.0 0.0 0.0 0.0 0.0 0.0 5.0 00453 HCO3 (filtered) 49 75.0 103.0 127.0 147.0 184.0 197.0 202.0 39086 Alk (filtered, as CaCO3) 49 61.0 84.4 104.0 121.0 152.0 162.0 166.0 70331 % finer than 62 microns 44 40.7 50.9 66.4 82.2 90.9 100.0 100.0 80154 Suspended sediment 46 0.0 1.0 2.0 4.5 14.0 67.0 1610.0
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 49 76 < 0.020 < 0.020 0.020 0.031 0.050 0.140 0.270
00613 NO2-N .010 49 49 < 0.010 < 0.010 < 0.010 < 0.010 0.012 0.030 0.030
00623 Org+NH3-N (filtered) .200 49 73 < 0.200 < 0.200 < 0.200 0.200 0.281 0.500 0.600
00625 Org+NH3-N (whole-water) .200 49 80 < 0.200 < 0.200 0.200 0.271 0.327 0.700 0.900
00631 NO2+NO3-N .050 49 90 < 0.050 < 0.050 0.110 0.247 0.673 1.393 1.912
00665 Total P (whole-water) .050 49 35 < 0.050 < 0.050 < 0.050 < 0.050 0.011 0.050 0.152
00666 Total P (filtered) .050 49 16 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 0.030 0.050
00671 PO4-P .010 49 41 < 0.010 < 0.010 < 0.010 < 0.010 0.001 0.004 0.021
00681 DOC .300 49 100 0.595 0.900 1.600 2.294 2.800 6.200 7.300
00689 SOC .200 49 55 < 0.200 < 0.200 < 0.200 0.200 0.300 2.600 > 5.000
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 49 100 43.00 65.00 110.1 140.0 164.4 200.0 200.0
00925 Magnesium .010 49 100 9.542 16.00 56.53 69.32 84.48 100.0 110.0
00930 Sodium .200 49 100 61.99 99.00 360.0 450.3 530.7 700.0 810.0
00935 Potassium .010 49 100 3.100 5.450 6.370 7.700 8.630 10.00 11.00
00940 Chloride .010 49 100 101.9 170.0 610.0 750.0 901.3 1200 1300
00945 Sulfate .010 49 100 68.07 110.0 360.6 440.0 533.1 680.0 740.0
00950 Fluoride .100 49 100 0.200 0.300 0.787 0.841 0.900 1.000 1.000
00955 Silica .010 49 100 5.600 7.200 9.600 11.19 13.80 15.44 17.38
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 2.0 48 60 < 2.0 < 2.0 < 2.0 1.0 1.4 2.0 2.3
01005 Barium 1.0 41 100 29.0 59.0 70.3 77.6 82.5 102.0 112.9
01010 Beryllium 3.0 40 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01020 Boron 16.0 48 100 46.3 79.9 192.8 222.5 245.6 320.0 970.1
01025 Cadmium 3.0 40 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01030 Chromium 2.0 40 45 < 2.0 < 2.0 < 2.0 < 2.0 2.5 5.1 7.0
01035 Cobalt 9.0 41 0 < 9.0 < 9.0 < 9.0 < 9.0 < 9.0 < 9.0 < 9.0
01040 Copper 2.0 40 55 < 2.0 < 2.0 < 2.0 2.0 2.9 5.5 8.0
01046 Iron 30.0 49 12 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 30.0 150.0
01049 Lead 3.0 40 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01056 Manganese 3.0 41 61 < 3.0 < 3.0 < 3.0 2.0 3.0 6.4 29.0
01060 Molybdenum 30.0 41 98 < 30.0 3.7 5.5 6.1 7.0 9.4 30.0
01065 Nickel 2.0 41 49 < 2.0 < 2.0 < 2.0 < 2.0 3.0 5.3 6.0
01075 Silver 3.0 41 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01080 Strontium 0.5 49 100 430.0 680.0 2200 2612 3100 3800 4300
01085 Vanadium 30.0 49 39 < 30.0 < 30.0 < 30.0 < 30.0 20.9 30.0 30.0
01090 Zinc 2.0 39 79 < 2.0 < 2.0 2.0 2.6 5.0 7.0 9.0
01095 Antimony 3.0 40 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01106 Aluminum 2.0 41 61 < 2.0 < 2.0 < 2.0 2.0 3.0 5.8 10.0
01130 Lithium 4.0 49 100 8.7 18.0 54.8 66.5 76.4 97.0 110.0
01145 Selenium 2.4 49 12 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 2.4 2.4
22703 Uranium 2.0 40 95 < 2.0 < 2.0 2.3 2.9 3.8 4.6 5.0
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 49 2 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 0.007
04028 Butylate .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .005 49 6 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.005 0.012
04037 Prometon .018 49 0 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018
04040 Desethyl atrazine .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04041 Cyanazine .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04095 Fonofos .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 49 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
38933 Chlorpyrifos .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39341 gamma-HCH .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39381 Dieldrin .001 49 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .002 49 2 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.009
39532 Malathion .005 49 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
39542 Parathion .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .002 49 10 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.005 0.150
39632 Atrazine .001 49 22 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 0.006 0.017
46342 Alachlor .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
49260 Acetochlor .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82660 Diethylanaline .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 49 2 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002
82663 Ethalfluralin .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .007 48 6 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 0.008 0.014
82666 Linuron .002 48 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .006 48 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
82668 EPTC .002 48 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82669 Pebulate .004 48 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .010 48 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82671 Molinate .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82674 Carbofuran .030 49 0 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030
82675 Terbufos .013 49 0 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013
82676 Pronamide .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82677 Disulfoton .017 49 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 49 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82681 Thiobencarb .002 49 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 49 4 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.003
82683 Pendimethalin .004 49 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82684 Napropamide .003 49 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .190 49 0 < 0.190 < 0.190 < 0.190 < 0.190 < 0.190 < 0.190 < 0.190
82686 Azinphos methyl .001 49 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82687 Permethrin .005 49 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
91063 Diazinon-d10 (%) .100 49 100 64.30 82.80 89.80 101.0 109.5 121.4 121.8
91064 Terbuthylazin (%) .100 37 100 80.93 91.57 101.9 111.5 120.0 130.9 135.2
91065 HCH alpha-D6 (%) .100 49 100 70.40 76.50 88.90 97.27 101.0 112.4 138.2
Suspended Sediment Chemistry
Units in parts per million (ppm) or parts per hundred (%)
Values censored higher than the reporting level (RL) indicate samples with insufficient sediment mass to quantify concentration above the RL
Percent
Parameter RL N Detections Min 5th 25th Median 75th 95th Max
29816 Antimony (ppm) 0.10 14 86 < 0.10 < 0.10 0.30 0.70 1.30 6.60 6.60
29818 Arsenic (ppm) 0.10 14 93 < 0.10 < 0.10 1.00 1.60 6.70 10.30 10.30
29820 Barium (ppm) 1.00 14 100 30.00 30.00 40.00 90.00 260.0 330.0 330.0
29822 Beryllium (ppm) 0.10 14 71 < 0.10 < 0.10 < 0.10 0.35 1.10 1.30 1.30
29826 Cadmium (ppm) 0.10 14 71 < 0.10 < 0.10 < 0.20 0.50 0.80 6.50 6.50
29829 Chromium (ppm) 1.00 14 93 < 1.00 < 1.00 6.00 28.00 56.00 140.0 140.0
29832 Copper (ppm) 1.00 14 100 2.00 2.00 4.00 12.00 17.00 1600 1600
29836 Lead (ppm) 1.00 14 93 < 1.00 < 1.00 10.00 16.50 20.00 83.00 83.00
29839 Manganese (ppm) 10.0 14 93 < 30.00 < 30.00 90.00 240.0 450.0 720.0 720.0
29841 Mercury (ppm) 0.01 11 91 < 0.01 < 0.01 0.02 0.06 0.08 0.10 0.10
29843 Molybdenum (ppm) 5.00 14 14 < 5.00 < 5.00 < 5.00 < 10.00 < 16.00 50.00 50.00
29845 Nickel (ppm) 1.00 14 86 < 1.00 < 1.00 7.00 15.50 34.00 82.00 82.00
29847 Selenium (ppm) 0.10 14 86 < 0.10 < 0.10 0.30 0.45 0.80 1.00 1.00
29850 Silver (ppm) 0.50 14 7 < 0.50 < 0.50 < 0.50 < 1.00 < 2.50 18.00 18.00
29853 Vanadium (ppm) 1.00 14 93 < 2.00 < 2.00 5.00 11.00 50.00 110.0 110.0
29855 Zinc (ppm) 1.00 14 100 20.00 20.00 50.00 75.00 100.0 340.0 340.0
30221 Aluminum (%) 0.10 14 93 < 0.10 < 0.10 0.20 0.75 4.80 7.00 7.00
30244 Total carbon (%) 0.10 8 88 < 0.10 < 0.10 1.90 4.35 7.60 8.70 8.70
30269 Iron (%) 0.10 14 86 < 0.10 < 0.10 0.10 0.55 1.50 2.00 2.00
30292 Phosphorus (%) 0.01 13 92 < 0.01 < 0.01 0.01 0.04 0.10 0.12 0.12
30308 Sulfur (%) 0.10 7 86 < 0.10 < 0.10 0.20 0.30 0.60 2.70 2.70
30317 Titanium (%) 0.01 13 62 < 0.01 < 0.01 < 0.02 0.10 0.20 0.24 0.24
35031 Cobalt (ppm) 1.00 14 71 < 1.00 < 1.00 < 1.00 4.50 7.00 11.00 11.00
35040 Strontium (ppm) 0.01 14 100 220.0 220.0 540.0 970.0 1100 1200 1200
35046 Uranium (ppm) 50.0 14 0 < 50.00 < 50.00 < 50.00 < 100.0 < 250.0 < 500.0 < 500.0
35050 Lithium (ppm) 1.00 14 100 12.00 12.00 22.00 24.50 27.00 28.00 28.00
49955 Thallium (ppm) 50.0 14 0 < 50.00 < 50.00 < 50.00 < 100.0 < 250.0 < 500.0 < 500.0
50279 Sediment (mg/L) 1.00 14 100 0.50 0.50 12.00 24.50 54.00 1611 1611
50465 Organic carbon (%) 0.10 9 89 < 0.10 < 0.10 1.90 2.30 3.30 4.40 4.40
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