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 0 5 29 69 125 250 2,330 Cubic meters per second 1,827 0 0 1 2 4 7 66
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) 35 16.0 18.0 22.0 28.5 30.0 33.0 34.5 00076 Turbidity (NTU) 35 1.7 5.5 14.0 20.0 24.0 39.0 75.0 00095 Conductance (uS/cm) 35 782.0 819.0 1227.0 1420.0 1590.0 1930.0 1940.0 00300 Dissolved oxygen 35 4.8 5.0 6.4 7.4 8.5 11.0 11.8 00400 pH (standard units) 35 7.3 7.6 8.0 8.2 8.3 8.4 8.7 00452 CO3 (filtered) 34 0.0 0.0 0.0 0.0 0.0 14.0 17.0 00453 HCO3 (filtered) 35 102.0 121.0 146.0 161.0 192.0 219.0 238.0 39086 Alk (filtered, as CaCO3) 35 84.0 99.0 119.0 134.0 165.0 195.0 202.0 70331 % finer than 62 microns 29 83.0 88.1 96.9 98.0 99.0 100.0 100.0 80154 Suspended sediment 35 16.0 23.0 30.0 37.0 55.0 156.0 191.0
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 35 74 < 0.020 < 0.020 < 0.020 0.014 0.020 0.111 0.203
00613 NO2-N .010 35 60 < 0.010 < 0.010 < 0.010 0.007 0.010 0.020 0.022
00623 Org+NH3-N (filtered) .200 35 100 0.200 0.233 0.292 0.312 0.392 0.551 0.600
00625 Org+NH3-N (whole-water) .200 35 97 < 0.200 0.356 0.520 0.601 0.800 1.291 1.300
00631 NO2+NO3-N .050 35 46 < 0.050 < 0.050 < 0.050 < 0.050 0.100 0.525 0.740
00665 Total P (whole-water) .010 35 100 0.050 0.060 0.120 0.158 0.180 0.230 0.294
00666 Total P (filtered) .010 35 89 < 0.010 < 0.010 0.047 0.063 0.113 0.149 0.230
00671 PO4-P .001 35 97 < 0.001 0.002 0.036 0.061 0.099 0.132 0.199
00681 DOC .300 32 100 2.900 3.000 3.700 3.900 4.150 5.000 5.100
00689 SOC .200 35 100 0.300 0.396 0.700 1.300 2.000 2.600 2.900
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 35 100 47.77 59.29 73.19 81.00 96.00 120.0 122.7
00925 Magnesium .010 35 100 12.33 13.67 21.93 25.80 28.25 34.56 37.53
00930 Sodium .200 35 100 75.93 86.34 130.0 152.9 180.0 210.0 214.7
00935 Potassium .010 35 100 4.770 5.080 5.890 6.320 6.810 7.500 7.640
00940 Chloride .010 34 100 108.3 121.1 165.1 197.1 220.0 298.5 301.8
00945 Sulfate .010 34 100 133.5 168.2 227.3 269.5 290.0 330.0 341.6
00950 Fluoride .100 34 100 0.391 0.400 0.566 0.700 0.864 0.900 0.901
00955 Silica .010 35 100 3.531 5.052 9.900 12.77 14.32 19.00 24.97
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 35 100 2.0 2.1 3.0 4.0 5.1 7.0 8.0
01005 Barium 1.0 29 100 64.3 93.0 102.0 114.0 136.0 141.0 142.3
01010 Beryllium 1.0 29 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01020 Boron 16.0 34 100 187.1 203.8 247.5 305.2 360.0 494.5 544.8
01025 Cadmium 1.0 29 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01030 Chromium 5.0 29 69 < 5.0 < 5.0 < 5.0 1.5 2.0 3.0 5.0
01035 Cobalt 3.0 29 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01040 Copper 1.0 29 90 < 1.0 < 1.0 1.1 1.6 2.0 3.0 3.0
01046 Iron 10.0 35 9 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 10.0 15.6
01049 Lead 1.0 29 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01056 Manganese 1.0 29 41 < 1.0 < 1.0 < 1.0 < 1.0 1.5 5.3 6.2
01060 Molybdenum 10.0 29 97 < 10.0 4.4 7.0 7.7 8.5 9.0 10.0
01065 Nickel 1.0 29 97 < 1.0 1.0 1.4 1.9 2.0 3.0 4.0
01075 Silver 1.0 29 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01080 Strontium 0.5 35 100 743.6 808.6 1285 1499 1700 1900 2008
01085 Vanadium 10.0 35 29 < 10.0 < 10.0 < 10.0 < 10.0 10.0 10.0 10.0
01090 Zinc 3.0 29 86 < 3.0 < 3.0 1.8 2.5 3.0 4.0 6.4
01095 Antimony 1.0 28 4 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.0
01106 Aluminum 10.0 29 45 < 10.0 < 10.0 < 10.0 < 10.0 2.0 3.5 10.0
01130 Lithium 4.0 35 100 22.3 26.3 43.6 48.9 57.0 65.0 65.3
01145 Selenium 2.4 35 6 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 2.4 2.4
22703 Uranium 1.0 28 100 1.2 1.4 2.5 3.0 3.2 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 34 3 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 0.410
04028 Butylate .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .010 34 15 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.014
04037 Prometon .018 34 15 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 0.018 0.018
04040 Desethyl atrazine .004 34 59 < 0.004 < 0.004 < 0.004 0.002 0.004 0.005 0.006
04041 Cyanazine .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04095 Fonofos .003 34 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 34 3 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.006
38933 Chlorpyrifos .004 34 18 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 0.010 0.026
39341 gamma-HCH .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39381 Dieldrin .001 34 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .002 34 21 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.007 0.016
39532 Malathion .005 34 3 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.022
39542 Parathion .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .007 32 53 < 0.007 < 0.007 < 0.007 0.005 0.008 0.057 0.087
39632 Atrazine .001 34 94 < 0.001 < 0.001 0.007 0.011 0.022 0.139 0.224
46342 Alachlor .005 34 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
49260 Acetochlor .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .075 34 3 < 0.075 < 0.075 < 0.075 < 0.075 < 0.075 < 0.075 0.075
82660 Diethylanaline .003 34 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 34 3 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.003
82663 Ethalfluralin .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .007 34 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
82666 Linuron .002 32 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .006 32 9 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.017 0.084
82668 EPTC .008 32 0 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008
82669 Pebulate .040 32 0 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040
82670 Tebuthiuron .010 32 3 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010
82671 Molinate .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 34 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82674 Carbofuran .010 34 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82675 Terbufos .013 34 0 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013
82676 Pronamide .003 34 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82677 Disulfoton .017 34 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 34 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .003 34 3 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 0.160
82681 Thiobencarb .002 34 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 34 21 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.005 0.021
82683 Pendimethalin .004 34 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82684 Napropamide .003 34 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .050 33 0 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050 < 0.050
82686 Azinphos methyl .010 33 6 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.010
82687 Permethrin .020 34 3 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.020
91063 Diazinon-d10 (%) .100 34 100 62.80 75.60 92.00 101.3 110.1 120.0 120.3
91064 Terbuthylazin (%) .100 28 100 80.40 89.62 102.9 109.5 112.8 125.7 133.3
91065 HCH alpha-D6 (%) .100 34 100 69.10 70.50 83.11 92.38 102.8 117.5 121.0
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 29 100 0.50 0.80 1.30 1.80 3.00 9.60 9.80
29818 Arsenic (ppm) 0.10 29 100 7.00 7.90 9.30 10.90 12.00 15.00 15.50
29820 Barium (ppm) 1.00 29 100 290.0 290.0 330.0 400.0 430.0 470.0 490.0
29822 Beryllium (ppm) 0.10 29 100 0.50 0.70 1.10 1.40 1.50 1.60 2.00
29826 Cadmium (ppm) 0.10 29 97 < 0.10 0.10 0.30 0.40 0.60 1.20 1.50
29829 Chromium (ppm) 1.00 29 97 < 1.00 16.00 33.00 36.00 41.00 49.00 51.00
29832 Copper (ppm) 1.00 29 100 8.00 11.00 14.00 16.00 18.00 30.00 41.00
29836 Lead (ppm) 1.00 29 100 14.00 17.00 21.00 25.00 31.00 60.00 130.0
29839 Manganese (ppm) 10.0 29 100 650.0 1000 1300 1500 1800 2500 2500
29841 Mercury (ppm) 0.01 29 97 < 0.01 0.04 0.07 0.11 0.16 0.33 0.42
29843 Molybdenum (ppm) 5.00 29 0 < 5.00 < 5.00 < 5.00 < 5.00 < 25.00 < 25.00 < 50.00
29845 Nickel (ppm) 1.00 29 97 < 1.00 12.00 19.00 22.00 24.00 29.00 29.00
29847 Selenium (ppm) 0.10 29 100 0.40 0.50 0.60 0.70 0.90 1.20 1.60
29850 Silver (ppm) 0.50 29 24 < 0.50 < 0.50 < 0.50 < 0.50 < 1.00 5.00 5.00
29853 Vanadium (ppm) 1.00 29 100 27.00 37.00 57.00 65.00 77.00 85.00 90.00
29855 Zinc (ppm) 1.00 29 100 50.00 60.00 100.0 120.0 130.0 220.0 250.0
30221 Aluminum (%) 0.10 29 100 1.90 2.90 4.30 5.00 5.70 6.20 6.80
30244 Total carbon (%) 0.10 29 90 < 0.10 < 0.10 4.40 5.00 5.40 6.20 9.70
30269 Iron (%) 0.10 29 100 0.90 1.30 2.10 2.30 2.70 3.40 5.80
30292 Phosphorus (%) 0.01 29 100 0.08 0.09 0.10 0.12 0.14 0.16 0.16
30308 Sulfur (%) 0.10 27 89 < 0.10 < 0.10 0.50 1.40 1.80 2.90 3.80
30317 Titanium (%) 0.01 29 100 0.10 0.10 0.20 0.22 0.30 0.30 0.33
35031 Cobalt (ppm) 1.00 29 100 3.00 4.00 6.00 7.00 8.00 11.00 13.00
35040 Strontium (ppm) 0.01 29 100 410.0 410.0 540.0 660.0 810.0 1200 1500
35046 Uranium (ppm) 50.0 29 0 < 50.00 < 50.00 < 50.00 < 50.00 < 250.0 < 250.0 < 500.0
35050 Lithium (ppm) 1.00 29 100 22.00 37.00 40.00 44.00 47.00 50.00 51.00
49955 Thallium (ppm) 50.0 29 0 < 50.00 < 50.00 < 50.00 < 50.00 < 250.0 < 250.0 < 500.0
50279 Sediment (mg/L) 1.00 29 100 32.00 33.00 37.00 43.00 51.00 88.00 103.0
50465 Organic carbon (%) 0.10 29 86 < 0.10 < 0.10 2.00 2.80 3.20 3.80 4.10
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