LCRA Logo   Colorado River Watch Network (CRWN) Water Quality Data

  • Site 112
  • Onion Creek below Lower McKinney Falls
  • Hydromet Rainfall
  • Hydromet Flow
  • Graph Data
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    Date Time Air Temp (C) Water Temp (C) Flow pH Nitrates-N (mg/L) DO Avg (mg/L) DO % Sat Cond (µS/cm) Days Since Rain Field Rain Gauge (in.) Secchi (M) Transparency (M) E.coli (cfu's)
    12/16/2024 14:53 27 23.4 2 8.5 < 1 7.4 634 11 0.37 > 1
    07/12/2022 09:50 29.5 32 2 7.8 < 2 4.1 570 13 1.11
    07/20/2021 10:00 27.5 26 5 7.8 < 2 5.3 64.66 300 1 1.39 0.15
    10/16/2019 17:21 21.5 21.5 2 8.2 < 1 7 79.1 820 1 0.14 0.82
    03/11/2019 17:13 18 18 3 7.7 < 2 9.05 95.93 590 19 0 > 1
    10/11/2017 17:15 23 24 2 7.35 < 1 6.3 74.34 620 8 0
    09/11/2017 17:00 27 24 3 8.2 < 1 7.2 84.96 560 15 0 1.15
    03/22/2017 17:15 30 25 3 8 < 2 6.9 82.8 520 3 0 > 1.22
    01/11/2017 17:15 22.5 17 3 7.77 < 2 9.6 99.84 630 6 0 > 1.22
    10/12/2016 17:20 25.5 25 3 7.86 < 1 6.05 72.6 610 5 0 0.56
    10/03/2016 17:23 27 25 3 7.69 < 2 6.8 81.6 580 8 0 1.12
    09/14/2016 17:20 37 28.5 3 7.74 < 1 5.15 65.4 590 4 0 1.11
    06/27/2016 10:00 28 29 3 8.34 < 1 5.8 74.24 600 20 0.05 > 1.22
    07/07/2015 10:23 28 27 5 7.57 < 2 6.15 76.26 600 7 0 0.59
    12/02/2014 17:15 9.5 13 4 7.88 1 7.85 75.36 560 10 0 1.06
    10/02/2014 17:30 33 29 3 8.37 1 7.3 93.44 450 14 0 0.6
    07/14/2014 09:55 24 28 3 7.81 < 1 4.95 62.37 640 10 0.1 0.32
    04/23/2014 17:16 29 27 3 7.96 < 1 5.55 68.82 620 9 0 0.65
    03/21/2014 16:32 27 20 3 7.92 < 1 8.6 94.6 630 10
    01/17/2014 16:40 21 22 3 7.4 2 13 148.2 750 7 7 1.14
    10/09/2013 17:03 25 24 2 8.2 9.1 107.38 400 4 0 0.89
    09/27/2013 16:30 27 27 2 7.68 < 2 7.25 89.9 510 7 0 0.72
    07/09/2013 10:45 29.5 27.5 2 7.36 < 1 5.55 69.38 670 8 0 0.2
    05/06/2013 17:00 29 20 2 7.7 < 1 6.8 74.8 580 8 0 0.54
    04/15/2013 17:17 29 26 3 8.08 < 1 5.4 65.88 550 6 0 > 1.22
    02/26/2013 17:10 19 17 7.74 < 1 8.2 85.28 600 16 0.01 0.72
    01/23/2013 16:58 21 16 3 8.1 < 1 9.3 94.86 550 14 0 > 1.22
    11/07/2012 17:08 19 19 2 7.16 < 1 8.2 88.56 650 12 0 > 1.22
    06/11/2012 11:18 31 29 2 7.95 < 1 6.6 84.48 630 28 0 1.06
    04/17/2012 17:22 26 24 3 8.05 2 7.2 84.96 690 14 0 > 1.22
    03/30/2012 16:40 25 20 3 7.8 < 1 6.5 71.5 640 2 0.15
    02/29/2012 17:05 19 19 3 7.39 8.9 96.12 620 10 0
    02/14/2012 17:16 20 15.5 3 8.04 2 8.8 88.88 560 1 0.2 0.69
    01/23/2012 17:05 17 15 2 7.85 < 1 10.2 102 700 14 0 0.9
    10/05/2011 16:55 31 35 2 7.53 < 1 5.4 75.6 910 30 0 0.25
    09/16/2011 16:30 31 30 2 8.53 < 1 9 117 900 30 0 0.22
    04/13/2011 17:00 29 24 3 7.94 < 1 6.55 77.29 710 9 0.01 > 1.22
    03/30/2011 17:00 20 20 3 8.05 < 1 9 99 630 34 0.01 > 1.22
    01/26/2011 17:07 14.5 12 3 8.16 1 10.2 95.88 560 9 0.01 > 1.22
    12/10/2010 17:00 24.5 19 3 8.07 8 86.4 750 6 0 > 1.22
    11/29/2010 17:02 20 17.5 3 8.02 < 1 8.25 86.62 810 25 0 > 1.22
    10/21/2010 17:00 29 25 3 7.8 < 1 5.75 69 660 27 0 > 1.22
    10/04/2010 16:50 23 20 3 7.44 < 1 5.4 59.4 550 9 0 0.76
    06/16/2010 10:20 28.5 28 3 7.96 < 1 6.5 81.9 540 4 0 0.835
    03/29/2010 17:05 26 20 3 7.85 < 1 7.05 77.5 5.8 5 0 > 1.22
    11/18/2009 17:15 12 15 3 7.76 < 1 9.3 93 620 10 0.05 > 1.22 33
    09/09/2009 17:05 28 29 1 7.67 < 1 4.05 610 0 0.1 0.375 133.2
    07/08/2009 09:48 29 29 2 7.9 < 1 3.7 510 9 0 0.47
    06/10/2009 10:24 29 28 2 8.3 < 1 5.6 70.56 550 32 0 0.6
    04/06/2009 17:12 18 18 3 8.44 < 1 8.95 94.87 540 4 0 0.69
    02/18/2009 11:15 24 20 3 8.18 < 1 8.2 90.2 640 1 0.006 > 1.22
    01/28/2009 17:15 8.5 10.5 2 8.17 < 2 12 109.2 780 23 0.1 > 1.22
    09/18/2008 17:05 24 23.5 2 7.02 < 1 9.2 107.64 590 26 0.88
    07/16/2008 09:55 29 28 2 7.92 < 1 4.7 59.22 630 10 0 > 1.22
    06/25/2008 10:15 28 26 3 8.05 < 1 5.75 70.15 600 7 0 > 1.22
    04/04/2008 16:43 19.5 20.5 3 8.26 < 1 8.55 94.91 0 0.15 > 1.22
    02/06/2008 17:00 12 13.5 3 8.26 < 1 11.1 107.67 590 11 0 > 1.22
    11/28/2007 17:01 14.5 13.5 2 8 < 1 7.9 76.63 600 3 0.3 > 1.22
    11/05/2007 16:50 24 22 2 8.15 < 1 9.55 108.87 560 14 0
    08/29/2007 17:20 29 28 3 8 < 1 6.8 85.68 550 6 > 1.22
    06/19/2007 10:14 28 27 5 8 < 1 5.6 69.44 530 2 0.15 > 1.22
    12/11/2006 17:04 19.5 15 2 6.5 < 1 10.6 106 540 2 0.05 0.64
    11/15/2006 17:06 14 16 2 7.6 < 1 7.15 72.93 580 26 0
    10/02/2006 16:56 30 26 2 7.7 < 1 7.1 540 9 0 105
    09/20/2006 17:20 25 26 2 7.9 < 1 7.1 540 3 1 > 1.2
    07/03/2006 09:23 25 24 Normal 7.6 < 2 6.18 72.87 370 1 0.2
    04/17/2006 16:45 29 30 2 7.8 < 1 7 520 20 0
    01/31/2006 17:05 23 15 Low 8.1 < 1 9.75 97.5 770 4 0
    01/13/2006 16:30 16 14 Normal 7.9 < 1 10.75 105.35 810
    11/07/2005 16:45 27 Low < 2 590
    10/17/2005 17:00 26 22 Low 7 < 6.15 70.11 480
    09/15/2005 17:15 30 35 7.1 < 1 6.9 96.6 460
    06/16/2005 10:40 28 28 Normal 7.1 < 1 7.25 91.35 420 12 0
    05/06/2005 16:48 26 24 Normal 7.6 < 1 6.35 74.93 550
    04/27/2005 15:00 26 23 Normal 7.3 7 7.85 91.06 590 2 0.15
    03/28/2005 16:48 23 18 Normal 7.2 < 1 8.9 94.34 450 1 0.2
    02/21/2005 17:00 19 17 Normal 7.3 < 1 8.6 89.44 310 1
    01/24/2005 17:00 19 12 Low 7.1 1 12.2 114.68 320
    12/08/2004 17:22 15 15 High 7.6 < 1 8.6 86 2
    10/25/2004 16:45 25 24 High 7.4 > 1 7.9 93.22 250 2 3
    11/10/1999 12:00 25 24 Low 8.1 < 1 11.1 128.8 11 0
    08/12/1999 11:00 29.5 32.5 Low 8.2 < 1 9.5 126.8 25 0
    06/09/1999 10:00 28 30 Normal 8.5 < 1 7.2 92.2 0
    05/26/1999 09:00 25 27 High 7.9 < 5 5 60.4 2 3
    04/22/1999 09:30 23 22 Normal 7.6 < 1 7.6 85.1 0
    02/18/1998 09:30 14 12.5 8.8 < 1 10.25 99 2 1
    01/02/1998 09:45 16 14 7.8 < 1 10.5 97 0 1
    06/21/1997 09:45 27 28 6.8 < 1 7.9 100 0 0.25
    06/14/1997 09:30 27 28 6.9 < 1 7.8 101 1 0.1
    05/31/1997 11:33 27 24 7.8 < 1 1 11.8 1 0.16
    04/20/1997 10:00 22.5 19 8 < 1 8.55 94 1 0.15
    03/16/1997 10:00 14 14.6 7.8 < 1 7.35 70 0 0.1
    03/01/1997 10:20 23 16 7.9 < 1 9 91 1 0.01
    02/22/1997 10:08 17 14 8.2 < 1 9.5 90 1
    02/08/1997 10:29 13 11 8 < 0.5 11 105 1
    01/26/1997 10:30 19.5 14 7.8 < 1 10.6 105
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