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 1,827 414 700 1,090 1,430 1,920 4,810 88,000 Cubic meters per second 1,827 12 20 31 40 54 136 2,492
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) 32 14.0 15.0 22.3 26.3 28.0 29.5 30.5 00076 Turbidity (NTU) 31 0.7 4.4 12.0 30.0 59.0 400.0 590.0 00095 Conductance (uS/cm) 32 219.0 600.0 897.5 1085.0 1185.0 1280.0 1280.0 00300 Dissolved oxygen 31 5.2 5.8 6.7 7.3 7.9 9.0 9.6 00400 pH (standard units) 32 7.4 7.5 7.9 8.0 8.1 8.3 8.4 00452 CO3 (filtered) 31 0.0 0.0 0.0 0.0 0.0 0.0 0.0 00453 HCO3 (filtered) 31 79.0 103.0 133.0 146.0 153.0 161.0 168.0 39086 Alk (filtered, as CaCO3) 32 65.0 84.0 110.0 120.0 125.5 132.0 138.0 70331 % finer than 62 microns 31 53.9 88.6 96.6 98.0 99.2 100.0 100.0 80154 Suspended sediment 31 9.0 15.0 35.0 71.0 132.0 1273.0 1410.0
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 31 97 < 0.020 0.022 0.062 0.097 0.204 0.437 0.521
00613 NO2-N .010 31 77 < 0.010 < 0.010 0.010 0.015 0.027 0.071 0.077
00623 Org+NH3-N (filtered) .200 31 100 0.197 0.214 0.288 0.337 0.442 0.667 0.762
00625 Org+NH3-N (whole-water) .200 31 100 0.327 0.391 0.495 0.612 0.810 1.465 2.149
00631 NO2+NO3-N .050 31 97 < 0.050 0.240 0.407 0.487 0.693 1.103 1.338
00665 Total P (whole-water) .010 31 100 0.054 0.105 0.175 0.207 0.268 0.727 0.869
00666 Total P (filtered) .010 31 100 0.015 0.030 0.082 0.116 0.191 0.208 0.270
00671 PO4-P .010 30 100 0.014 0.021 0.069 0.107 0.169 0.212 0.237
00681 DOC 2.70 29 93 < 2.700 < 2.700 2.600 2.800 3.220 4.600 5.000
00689 SOC .200 31 97 < 0.200 0.200 0.300 0.600 1.027 2.100 8.900
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 32 100 27.71 52.93 65.94 71.83 76.50 83.89 84.44
00925 Magnesium .010 32 100 2.584 11.21 17.59 21.09 22.98 25.73 26.15
00930 Sodium .200 32 100 5.634 54.64 87.33 109.4 127.0 143.5 144.8
00935 Potassium .010 32 100 2.740 2.910 3.755 4.480 4.975 5.480 5.570
00940 Chloride .010 32 100 6.006 64.85 106.1 141.9 150.9 171.4 173.0
00945 Sulfate .010 32 100 16.15 113.4 153.8 197.9 221.5 231.4 232.7
00950 Fluoride .100 32 97 < 0.100 0.146 0.507 0.602 0.767 0.794 0.803
00955 Silica .010 32 100 0.957 1.091 6.467 10.69 12.46 14.73 15.15
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 31 100 1.2 1.4 2.0 2.2 3.0 3.8 4.2
01005 Barium 1.0 19 100 48.2 48.2 81.6 99.1 113.4 123.8 123.8
01010 Beryllium 1.0 19 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01020 Boron 16.0 31 100 33.4 57.7 143.1 173.7 193.0 209.6 211.6
01025 Cadmium 1.0 19 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01030 Chromium 1.0 19 42 < 1.0 < 1.0 < 1.0 < 1.0 1.8 2.5 2.5
01035 Cobalt 1.0 19 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01040 Copper 1.0 18 83 < 1.0 < 1.0 1.1 1.3 1.5 2.3 2.3
01046 Iron 30.0 31 3 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 30.0
01049 Lead 1.0 19 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01056 Manganese 1.0 19 74 < 1.0 < 1.0 < 1.0 2.2 4.8 13.3 13.3
01060 Molybdenum 1.0 19 100 2.3 2.3 5.0 6.3 7.4 7.6 7.6
01065 Nickel 1.0 19 95 < 1.0 < 1.0 1.3 1.4 1.7 2.2 2.2
01075 Silver 1.0 19 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01080 Strontium 0.5 31 100 212.3 294.9 1139 1211 1393 1448 1451
01085 Vanadium 30.0 31 32 < 30.0 < 30.0 < 30.0 < 30.0 10.0 13.8 30.0
01090 Zinc 5.7 17 65 < 5.7 < 5.7 < 5.7 2.4 3.0 5.7 5.7
01095 Antimony 1.0 19 5 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 1.5 1.5
01106 Aluminum 1.0 19 95 < 1.0 < 1.0 3.4 7.2 16.8 47.0 47.0
01130 Lithium 4.0 31 100 5.7 13.1 30.9 37.5 46.6 53.9 56.7
01145 Selenium 2.4 31 19 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 2.4 2.4
22703 Uranium 1.0 19 95 < 1.0 < 1.0 2.3 3.1 3.3 3.7 3.7
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 30 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
04028 Butylate .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .005 30 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
04037 Prometon .018 30 0 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018 < 0.018
04040 Desethyl atrazine .002 30 13 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.004 0.005
04041 Cyanazine .004 30 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04095 Fonofos .003 30 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 30 7 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.006 0.006
38933 Chlorpyrifos .004 30 3 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 0.017
39341 gamma-HCH .004 30 3 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 0.009
39381 Dieldrin .001 30 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .005 30 13 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.005 0.006
39532 Malathion .005 30 7 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.005 0.017
39542 Parathion .004 30 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .025 28 82 < 0.025 < 0.025 0.006 0.011 0.032 0.119 0.128
39632 Atrazine .006 30 53 < 0.006 < 0.006 < 0.006 0.003 0.006 0.016 0.020
46342 Alachlor .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
49260 Acetochlor .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .033 30 3 < 0.033 < 0.033 < 0.033 < 0.033 < 0.033 < 0.033 0.033
82660 Diethylanaline .003 30 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 30 3 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002
82663 Ethalfluralin .004 30 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .007 30 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
82666 Linuron .002 29 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .020 29 0 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020
82668 EPTC .008 29 0 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008
82669 Pebulate .004 29 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .010 29 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82671 Molinate .004 30 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 30 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82674 Carbofuran .007 30 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
82675 Terbufos .013 30 0 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013
82676 Pronamide .003 30 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82677 Disulfoton .017 30 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 30 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 30 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .010 30 40 < 0.010 < 0.010 < 0.010 < 0.010 0.005 0.018 0.078
82681 Thiobencarb .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 30 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82683 Pendimethalin .010 30 0 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010
82684 Napropamide .003 30 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .040 30 0 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040 < 0.040
82686 Azinphos methyl .100 30 0 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100
82687 Permethrin .005 30 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
91063 Diazinon-d10 (%) .100 30 100 87.20 95.05 99.66 105.2 109.1 115.9 125.2
91064 Terbuthylazin (%) .100 14 100 94.05 94.05 102.9 105.5 109.7 120.3 120.3
91065 HCH alpha-D6 (%) .100 30 100 79.29 81.55 93.31 96.33 100.9 103.9 104.3
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 18 100 0.80 0.80 1.00 1.20 1.80 4.80 4.80
29818 Arsenic (ppm) 0.10 18 100 5.40 5.40 6.30 7.30 7.90 11.50 11.50
29820 Barium (ppm) 1.00 18 100 250.0 250.0 320.0 340.0 360.0 420.0 420.0
29822 Beryllium (ppm) 0.10 18 100 0.70 0.70 1.00 1.20 1.30 1.50 1.50
29826 Cadmium (ppm) 0.10 18 100 0.30 0.30 0.30 0.40 0.40 0.60 0.60
29829 Chromium (ppm) 1.00 18 100 30.00 30.00 37.00 38.00 40.00 64.00 64.00
29832 Copper (ppm) 1.00 18 100 12.00 12.00 13.00 14.00 15.00 18.00 18.00
29836 Lead (ppm) 1.00 18 100 12.00 12.00 15.00 19.00 20.00 35.00 35.00
29839 Manganese (ppm) 10.0 18 100 380.0 380.0 420.0 520.0 560.0 870.0 870.0
29841 Mercury (ppm) 0.01 18 100 0.03 0.03 0.05 0.07 0.07 0.13 0.13
29843 Molybdenum (ppm) 5.00 18 6 < 2.00 < 2.00 < 5.00 < 5.00 < 5.00 10.00 10.00
29845 Nickel (ppm) 1.00 18 100 13.00 13.00 17.00 19.00 19.00 41.00 41.00
29847 Selenium (ppm) 0.10 18 100 0.50 0.50 0.60 0.70 0.80 1.10 1.10
29850 Silver (ppm) 0.50 18 28 < 0.50 < 0.50 < 0.50 < 0.50 0.90 3.90 3.90
29853 Vanadium (ppm) 1.00 18 100 51.00 51.00 60.00 68.00 81.00 120.0 120.0
29855 Zinc (ppm) 1.00 18 100 80.00 80.00 80.00 95.00 110.0 150.0 150.0
30221 Aluminum (%) 0.10 18 100 3.40 3.40 4.60 5.15 5.70 7.20 7.20
30244 Total carbon (%) 0.10 15 100 3.80 3.80 4.40 4.80 5.10 5.90 5.90
30269 Iron (%) 0.10 18 100 1.70 1.70 2.00 2.15 2.40 3.30 3.30
30292 Phosphorus (%) 0.01 18 100 0.07 0.07 0.09 0.11 0.11 0.17 0.17
30308 Sulfur (%) 0.10 13 92 < 0.10 < 0.10 0.30 0.60 1.20 2.00 2.00
30317 Titanium (%) 0.01 18 100 0.17 0.17 0.24 0.25 0.29 0.34 0.34
35031 Cobalt (ppm) 1.00 18 100 5.00 5.00 7.00 8.00 8.00 10.00 10.00
35040 Strontium (ppm) 0.01 18 100 360.0 360.0 490.0 605.0 730.0 880.0 880.0
35046 Uranium (ppm) 50.0 18 0 < 50.00 < 50.00 < 50.00 < 50.00 < 50.00 < 100.0 < 100.0
35050 Lithium (ppm) 1.00 18 100 30.00 30.00 37.00 40.00 43.00 49.00 49.00
49955 Thallium (ppm) 50.0 18 0 < 50.00 < 50.00 < 50.00 < 50.00 < 50.00 < 100.0 < 100.0
50279 Sediment (mg/L) 1.00 18 100 14.00 14.00 38.00 67.00 135.0 1304 1304
50465 Organic carbon (%) 0.10 16 100 1.40 1.40 1.50 1.85 2.00 2.40 2.40
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