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 59 96 233 639 950 1,240 3,410 Cubic meters per second 1,827 2 3 7 18 27 35 97
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) 55 6.5 8.0 10.0 17.5 24.0 26.0 27.0 00076 Turbidity (NTU) 48 4.2 8.0 17.0 43.5 73.0 180.0 1250.0 00095 Conductance (uS/cm) 55 783.0 841.0 938.0 1020.0 1360.0 2300.0 2810.0 00300 Dissolved oxygen 55 5.3 5.8 6.7 7.7 9.2 11.0 11.9 00400 pH (standard units) 55 7.8 8.0 8.3 8.3 8.4 8.6 8.6 00452 CO3 (filtered) 53 0.0 0.0 0.0 2.0 5.0 12.0 25.0 00453 HCO3 (filtered) 53 151.0 175.0 195.0 201.0 228.0 305.0 321.0 39086 Alk (filtered, as CaCO3) 53 127.0 145.0 163.0 174.0 187.0 259.0 272.0 70331 % finer than 62 microns 48 5.0 26.0 52.5 62.5 73.0 91.0 95.0 80154 Suspended sediment 51 54.0 66.0 141.0 252.0 373.0 1360.0 3450.0
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 54 74 < 0.020 < 0.020 < 0.020 0.035 0.053 0.120 0.210
00613 NO2-N .010 54 69 < 0.010 < 0.010 < 0.010 0.012 0.020 0.054 0.123
00623 Org+NH3-N (filtered) .200 52 88 < 0.200 < 0.200 0.211 0.253 0.300 0.400 0.568
00625 Org+NH3-N (whole-water) .200 54 100 0.272 0.373 0.600 0.757 0.900 1.500 3.445
00631 NO2+NO3-N .050 54 100 0.058 0.109 0.258 0.342 0.722 1.245 1.261
00665 Total P (whole-water) .010 54 100 0.029 0.066 0.162 0.206 0.285 0.624 3.083
00666 Total P (filtered) .050 54 87 < 0.050 < 0.050 0.030 0.040 0.062 0.140 0.260
00671 PO4-P .010 54 100 0.010 0.017 0.030 0.040 0.065 0.130 0.260
00681 DOC 3.60 45 98 < 3.600 2.983 3.200 3.400 3.581 5.300 6.100
00689 SOC .200 44 98 0.500 0.600 0.850 2.000 2.950 4.000 > 10.00
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 55 100 49.00 54.64 59.69 65.01 79.00 120.0 140.0
00925 Magnesium .010 55 100 11.00 12.00 13.62 15.04 18.00 31.00 32.00
00930 Sodium .200 55 100 86.00 91.04 100.0 113.7 160.0 330.0 410.0
00935 Potassium .010 55 100 5.200 5.800 6.740 7.380 8.100 11.00 12.00
00940 Chloride .010 55 100 61.08 68.05 81.47 95.00 153.0 310.0 430.0
00945 Sulfate .010 55 100 138.9 150.0 172.6 194.6 240.0 480.0 570.0
00950 Fluoride .100 55 98 < 0.100 0.600 0.643 0.688 0.700 0.800 0.800
00955 Silica .010 55 100 10.49 11.00 12.54 14.59 17.00 24.00 25.00
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 49 100 2.0 2.0 3.0 3.4 4.0 4.5 5.0
01005 Barium 1.0 48 100 57.0 60.0 66.2 71.7 82.0 100.0 107.0
01010 Beryllium 2.0 46 0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0
01020 Boron 16.0 45 100 130.0 148.1 165.6 175.5 198.0 356.6 429.0
01025 Cadmium 2.0 48 0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0
01030 Chromium 5.0 48 46 < 5.0 < 5.0 < 5.0 < 5.0 2.0 3.4 5.0
01035 Cobalt 3.0 48 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01040 Copper 2.0 48 83 < 2.0 < 2.0 1.0 1.5 1.9 3.0 4.4
01046 Iron 10.0 55 15 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 15.0 31.0
01049 Lead 2.0 48 0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0
01056 Manganese 1.0 54 80 < 1.0 < 1.0 1.0 2.6 16.0 87.0 126.0
01060 Molybdenum 10.0 48 96 < 10.0 7.0 7.9 8.4 9.6 14.0 20.0
01065 Nickel 2.0 48 69 < 2.0 < 2.0 < 2.0 1.3 2.1 3.0 6.0
01075 Silver 2.0 48 0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0
01080 Strontium 0.5 48 100 659.7 715.4 766.6 839.6 1069 1662 2100
01085 Vanadium 30.0 48 17 < 30.0 < 30.0 < 30.0 < 30.0 < 30.0 18.0 30.0
01090 Zinc 10.0 48 90 < 10.0 < 10.0 1.5 2.1 4.7 9.0 12.0
01095 Antimony 2.0 45 0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0 < 2.0
01106 Aluminum 10.0 48 96 < 10.0 1.0 2.1 3.0 4.9 13.7 25.8
01130 Lithium 4.0 48 100 74.0 75.0 87.0 95.9 120.8 193.6 230.0
01145 Selenium 2.4 49 0 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4 < 2.4
22703 Uranium 1.0 45 100 2.7 3.0 3.3 3.5 4.0 5.3 5.9
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 47 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
04028 Butylate .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .005 47 53 < 0.005 < 0.005 < 0.005 0.005 0.006 0.011 0.012
04037 Prometon .018 47 64 < 0.018 < 0.018 < 0.018 0.014 0.018 0.024 0.330
04040 Desethyl atrazine .002 47 9 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.002 0.003
04041 Cyanazine .004 47 32 < 0.004 < 0.004 < 0.004 < 0.004 0.006 0.042 0.086
04095 Fonofos .003 47 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 47 9 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.006 0.006
38933 Chlorpyrifos .004 47 36 < 0.004 < 0.004 < 0.004 < 0.004 0.004 0.020 0.047
39341 gamma-HCH .020 47 0 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020
39381 Dieldrin .001 47 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .006 47 87 < 0.006 < 0.006 0.004 0.005 0.006 0.011 0.014
39532 Malathion .005 47 15 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 0.026 0.227
39542 Parathion .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .005 47 32 < 0.005 < 0.005 < 0.005 < 0.005 0.003 0.012 0.052
39632 Atrazine .003 47 47 < 0.003 < 0.003 < 0.003 < 0.003 0.004 0.006 0.009
46342 Alachlor .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
49260 Acetochlor .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .020 47 2 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 < 0.020 0.021
82660 Diethylanaline .003 47 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 47 9 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.003 0.005
82663 Ethalfluralin .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .007 47 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
82666 Linuron .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .006 47 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
82668 EPTC .030 47 0 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030 < 0.030
82669 Pebulate .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .010 47 40 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.010 0.012
82671 Molinate .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 47 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 47 2 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 0.003
82674 Carbofuran .013 47 2 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 0.013
82675 Terbufos .013 47 2 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 0.016
82676 Pronamide .003 47 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82677 Disulfoton .017 47 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 47 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .008 47 11 < 0.008 < 0.008 < 0.008 < 0.008 < 0.008 0.010 0.082
82681 Thiobencarb .002 47 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 47 62 < 0.002 < 0.002 < 0.002 0.002 0.004 0.008 0.009
82683 Pendimethalin .004 47 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82684 Napropamide .003 47 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .024 47 0 < 0.024 < 0.024 < 0.024 < 0.024 < 0.024 < 0.024 < 0.024
82686 Azinphos methyl .005 46 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
82687 Permethrin .005 47 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
91063 Diazinon-d10 (%) .100 47 100 68.10 84.40 96.29 107.2 114.0 125.0 129.8
91064 Terbuthylazin (%) .100 33 100 96.20 97.80 106.0 114.8 121.5 129.2 139.3
91065 HCH alpha-D6 (%) .100 47 100 71.56 76.10 93.26 99.08 106.0 113.3 127.0
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 34 100 0.40 0.50 0.60 0.85 1.40 16.10 17.70
29818 Arsenic (ppm) 0.10 34 100 2.40 3.00 4.20 4.50 5.10 6.50 6.90
29820 Barium (ppm) 1.00 34 100 60.00 150.0 410.0 590.0 620.0 650.0 660.0
29822 Beryllium (ppm) 0.10 34 100 0.60 0.70 1.10 1.40 1.50 1.70 2.10
29826 Cadmium (ppm) 0.10 34 91 < 0.10 < 0.10 0.20 0.30 0.30 0.50 0.60
29829 Chromium (ppm) 1.00 34 100 15.00 27.00 38.00 42.00 48.00 58.00 67.00
29832 Copper (ppm) 1.00 34 100 4.00 11.00 15.00 19.00 22.00 26.00 28.00
29836 Lead (ppm) 1.00 34 100 9.00 14.00 16.00 17.00 20.00 27.00 59.00
29839 Manganese (ppm) 10.0 27 100 240.0 510.0 720.0 850.0 1200 2200 2500
29841 Mercury (ppm) 0.01 34 85 < 0.01 < 0.01 0.01 0.02 0.03 0.08 0.10
29843 Molybdenum (ppm) 5.00 33 15 < 2.00 < 5.00 < 5.00 < 5.00 < 10.00 25.00 25.00
29845 Nickel (ppm) 1.00 34 100 6.00 9.00 19.00 23.00 29.00 41.00 54.00
29847 Selenium (ppm) 0.10 34 97 < 0.10 0.10 0.20 0.30 0.40 0.50 0.50
29850 Silver (ppm) 0.50 34 3 < 0.50 < 0.50 < 0.50 < 0.50 < 1.00 < 2.50 2.50
29853 Vanadium (ppm) 1.00 34 100 23.00 24.00 37.00 47.50 52.00 59.00 60.00
29855 Zinc (ppm) 1.00 34 100 20.00 50.00 60.00 75.00 90.00 150.0 260.0
30221 Aluminum (%) 0.10 34 100 0.90 1.00 2.70 4.50 5.30 5.90 5.90
30244 Total carbon (%) 0.10 26 96 < 0.10 0.20 1.90 2.25 3.40 4.70 4.90
30269 Iron (%) 0.10 34 100 1.10 1.20 1.60 2.00 2.30 5.70 5.90
30292 Phosphorus (%) 0.01 34 100 0.03 0.05 0.06 0.07 0.08 0.09 0.11
30308 Sulfur (%) 0.10 29 86 < 0.10 < 0.10 0.10 0.50 1.20 4.00 4.70
30317 Titanium (%) 0.01 27 100 0.10 0.14 0.20 0.24 0.28 0.30 0.32
35031 Cobalt (ppm) 1.00 34 100 4.00 4.00 6.00 8.00 8.00 10.00 10.00
35040 Strontium (ppm) 0.01 34 100 250.0 300.0 360.0 430.0 500.0 810.0 830.0
35046 Uranium (ppm) 50.0 33 21 < 50.00 < 50.00 < 50.00 < 100.0 < 250.0 1300 1300
35050 Lithium (ppm) 1.00 34 100 11.00 15.00 35.00 42.00 54.00 74.00 81.00
49955 Thallium (ppm) 50.0 26 0 < 50.00 < 50.00 < 50.00 < 50.00 < 250.0 250.0 250.0
50279 Sediment (mg/L) 1.00 32 100 42.00 42.00 130.5 239.5 385.5 684.0 820.0
50465 Organic carbon (%) 0.10 33 97 < 0.10 0.10 0.60 1.00 1.40 3.40 3.40
Return to Results