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 2,570 6,970 11,100 15,500 19,500 23,700 31,400 Cubic meters per second 1,827 73 197 314 439 552 671 889
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) 37 12.5 12.5 13.0 13.5 14.0 14.0 14.5 00076 Turbidity (NTU) 37 0.1 0.1 0.2 0.2 0.4 1.3 1.5 00095 Conductance (uS/cm) 37 848.0 867.0 883.0 950.0 1020.0 1080.0 1100.0 00300 Dissolved oxygen 36 6.1 6.3 7.2 7.6 8.8 9.5 10.4 00400 pH (standard units) 37 7.5 7.6 7.8 8.0 8.1 8.2 8.3 00453 HCO3 (filtered) 37 127.0 140.0 151.0 155.0 160.0 162.0 163.0 39086 Alk (filtered, as CaCO3) 37 104.0 115.0 124.0 127.0 132.0 132.0 134.0 70331 % finer than 62 microns 31 18.0 23.0 46.0 57.0 74.1 100.0 107.0 80154 Suspended sediment 32 0.0 0.0 3.0 5.0 9.0 23.0 34.0
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 37 32 < 0.020 < 0.020 < 0.020 < 0.020 0.020 0.040 0.051
00613 NO2-N .010 37 11 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.030
00623 Org+NH3-N (filtered) .200 37 46 < 0.200 < 0.200 < 0.200 < 0.200 0.200 0.273 0.957
00625 Org+NH3-N (whole-water) .200 37 49 < 0.200 < 0.200 < 0.200 < 0.200 0.200 0.283 0.300
00631 NO2+NO3-N .050 37 100 0.250 0.260 0.311 0.335 0.355 0.384 0.500
00665 Total P (whole-water) .050 37 30 < 0.050 < 0.050 < 0.050 < 0.050 0.010 0.030 0.050
00666 Total P (filtered) .010 37 35 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.020 0.531
00671 PO4-P .010 37 73 < 0.010 < 0.010 < 0.010 0.002 0.004 0.006 0.010
00681 DOC .300 36 100 2.300 2.300 2.500 2.600 2.875 5.000 5.300
00689 SOC .200 36 53 < 0.100 < 0.100 < 0.100 0.200 0.200 0.300 0.300
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 37 100 65.10 65.97 70.00 71.24 73.72 77.00 79.00
00925 Magnesium .010 37 100 23.39 23.69 24.65 25.36 27.00 28.00 28.00
00930 Sodium .200 37 100 71.51 72.71 76.01 81.13 91.00 96.00 98.00
00935 Potassium .010 37 100 3.540 3.630 3.870 4.100 4.300 4.600 4.700
00940 Chloride .010 37 100 63.69 63.70 65.74 75.31 84.00 85.00 87.00
00945 Sulfate .010 37 100 210.5 212.4 216.7 234.9 250.0 260.0 260.0
00950 Fluoride .100 37 100 0.234 0.248 0.296 0.300 0.329 0.400 0.409
00955 Silica .010 37 100 7.900 7.952 8.395 8.534 8.843 9.228 9.345
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 37 97 < 1.0 2.0 2.0 2.5 3.0 3.8 4.0
01005 Barium 1.0 25 100 99.9 100.3 108.0 119.0 130.0 134.0 134.0
01010 Beryllium 1.0 25 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01020 Boron 16.0 35 100 96.8 98.0 103.7 108.4 116.0 140.0 140.0
01025 Cadmium 1.0 25 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01030 Chromium 5.0 25 76 < 5.0 < 5.0 1.0 1.0 2.0 4.7 5.0
01035 Cobalt 3.0 25 0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0 < 3.0
01040 Copper 1.0 25 88 < 1.0 < 1.0 1.5 1.9 2.0 3.0 4.0
01046 Iron 10.0 37 0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0
01049 Lead 1.0 25 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01056 Manganese 1.0 25 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01060 Molybdenum 1.0 25 100 4.0 4.4 4.8 5.0 5.0 6.0 20.0
01065 Nickel 1.0 25 92 < 1.0 < 1.0 1.2 1.5 3.0 3.0 4.0
01075 Silver 1.0 25 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01080 Strontium 0.5 37 100 881.5 901.3 933.0 970.4 1007 1100 1100
01085 Vanadium 10.0 37 0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0
01090 Zinc 1.0 25 80 < 1.0 < 1.0 1.0 1.2 2.0 3.0 9.0
01095 Antimony 1.0 24 0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0
01106 Aluminum 10.0 25 8 < 10.0 < 10.0 < 10.0 < 10.0 < 10.0 1.1 10.0
01130 Lithium 4.0 37 100 30.5 34.0 37.4 40.0 43.7 45.0 47.0
01145 Selenium 2.4 37 92 < 2.4 < 2.4 1.9 2.0 2.2 3.0 3.0
22703 Uranium 1.0 24 100 3.9 4.0 4.0 4.0 4.3 5.0 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 37 0 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007 < 0.007
04028 Butylate .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
04035 Simazine .008 37 54 < 0.008 < 0.008 < 0.008 0.005 0.005 0.008 0.008
04037 Prometon .018 37 62 < 0.018 < 0.018 < 0.018 0.004 0.018 0.018 0.018
04040 Desethyl atrazine .002 37 49 < 0.002 < 0.002 < 0.002 < 0.002 0.002 0.003 0.004
04041 Cyanazine .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
04095 Fonofos .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
34253 alpha-HCH .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
34653 p,p DDE .006 37 3 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 0.006
38933 Chlorpyrifos .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39341 gamma-HCH .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39381 Dieldrin .001 37 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
39415 Metolachlor .002 37 49 < 0.002 < 0.002 < 0.002 < 0.002 0.003 0.005 0.006
39532 Malathion .005 37 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
39542 Parathion .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
39572 Diazinon .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
39632 Atrazine .001 37 95 < 0.001 < 0.001 0.004 0.004 0.005 0.007 0.009
46342 Alachlor .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
49260 Acetochlor .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82630 Metribuzin .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82660 Diethylanaline .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82661 Trifluralin .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82663 Ethalfluralin .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82664 Phorate .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82665 Terbacil .100 37 0 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100 < 0.100
82666 Linuron .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82667 Methyl parathion .006 37 0 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006 < 0.006
82668 EPTC .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82669 Pebulate .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82670 Tebuthiuron .010 37 24 < 0.010 < 0.010 < 0.010 < 0.010 < 0.010 0.010 0.010
82671 Molinate .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82672 Ethoprop .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82673 Benfluralin .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82674 Carbofuran .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82675 Terbufos .013 37 0 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013
82676 Pronamide .003 37 3 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 0.003
82677 Disulfoton .017 37 0 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017 < 0.017
82678 Triallate .001 37 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82679 Propanil .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82680 Carbaryl .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82681 Thiobencarb .002 37 0 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002 < 0.002
82682 Dachthal (DCPA) .002 37 76 < 0.002 < 0.002 0.002 0.002 0.002 0.003 0.003
82683 Pendimethalin .004 37 0 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004 < 0.004
82684 Napropamide .003 37 0 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003 < 0.003
82685 Propargite .013 37 0 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013 < 0.013
82686 Azinphos methyl .001 37 0 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001 < 0.001
82687 Permethrin .005 37 0 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005 < 0.005
91063 Diazinon-d10 (%) .100 37 100 78.50 80.00 85.50 95.70 103.9 135.0 145.9
91064 Terbuthylazin (%) .100 29 100 73.70 85.12 104.0 109.0 113.8 133.9 149.2
91065 HCH alpha-D6 (%) .100 37 100 58.60 74.60 85.00 92.33 100.9 122.9 129.4
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