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

  • Site 229
  • Lady Bird Lake above Longhorn Dam
  • 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)
    06/24/2022 10:26 31 26 3 6.9 < 2 6.1 74.42 460 29 > 1.22
    04/13/2022 15:49 31 24 3 8.1 2 5.25 61.95 530 3 0.17 0.94
    03/30/2022 10:35 31 19 3 8.2 < 2 7.7 83.16 570 0 0.19 0.86
    03/13/2022 15:30 19.5 15 3 8.1 < 2 10.2 102 600 6 0 > 0.86
    03/07/2022 15:18 8 15 3 8.1 2 8.25 82.5 600 0 0.09 0.95
    02/22/2022 15:15 26 20.5 3 8.2 < 4 10.1 112.11 550 18 0 0.85
    02/07/2022 15:49 14 12 3 8.6 < 2 10.8 101.52 400 3 0.17 0.71
    08/31/2020 17:55 35 29 7 < 1 6.05 77.44 450 7 0 > > 1
    10/31/2019 15:25 12 11 7 < 1 6.2 57.04 440 7 0.05 > 1
    08/26/2019 15:25 33 29.5 7 < 1 5.5 70.95 460 7 > 1
    07/26/2019 09:10 35 28 7 < 1 6.7 480 7 0 > 1
    06/25/2019 09:08 27.5 25.5 7 < 1 4.9 59.29 470 1 0.52 < 1
    04/25/2019 09:40 23 19 7 < 1 6.1 65.88 350 1 1.84 > 0.9
    03/08/2019 10:10 20 16 7 < 1 8 81.6 480 7 0 > 1.2
    11/16/2011 16:32 26 20 1 7.5 < 1 6.4 70.4 500 1 0.5 0.51
    10/12/2011 16:20 29.5 26 1 7.5 < 1 7 85.4 460 3 1 0.58
    09/15/2011 16:45 33 28 7.5 < 1 5 63 460 30 0 > 1.22
    06/03/2011 17:00 34 26 7.5 < 1 5.9 71.98 460 30 0
    04/28/2011 16:30 22 23 3 7.5 < 1 6.3 73.08 460 24 0
    01/07/2011 14:00 19 15 1 7.5 < 1 10.1 101 520 4 0.65 > 1.2
    12/06/2010 16:00 13 15 1 7.5 < 1 8.8 88 540 2 0.5 > 1.22
    11/20/2010 16:10 21 18 7.5 < 1 7 74.2 580 8 0 0.85
    09/22/2010 18:36 26 27 3 7.5 < 1 4.7 58.28 470 0 0.65 0.85
    08/09/2010 17:10 35 30 7.5 < 1 6.3 81.9 490 13 0 > 1.22
    07/20/2010 14:40 28 30 3 7.5 < 1 6.4 83.2 11 0 0.65
    03/05/2010 16:00 18 15 3 7.5 < 1 9.5 95 630 3 0.83
    01/30/2010 16:39 7 14.5 3 7 < 1 1 1.33 0.77
    12/20/2009 12:07 12 14 3 7 < 1 8.4 82.32 620 3 0.06
    10/31/2009 11:34 19 19 3 7.5 < 1 7.2 77.76 570 1 5.35
    07/27/2009 16:49 36 30 2 8 < 1 5.4 70.2 460 30 0 0.79
    05/29/2009 14:37 29 25 3 7.5 < 1 6 72 440 1 0.17 0.78
    04/19/2009 10:28 16 21 3 7 < 1 8.3 92.96 430 1 1.48 0.68
    11/26/2008 09:31 18 16.5 3 7.5 7.2 74.16 3 0.03 0.93
    09/18/2008 11:15 29 25 3 7 < 1 6.1 73.2 450 20 0 0.77 1070
    08/08/2008 09:03 27.5 26.5 7 < 1 5.8 71.34 450 2 0.01 > 1.2
    07/02/2008 17:45 27 26 3 7 6.2 75.64 440 0 0 > 1.2
    04/30/2008 16:30 27 23 3 7.5 6.7 77.72 450 2 1.97 0.444
    03/19/2008 16:30 25 21 3 7.5 < 1 7.8 87.36 480 1 0.01 0.63
    02/08/2008 16:47 13 15 1 7 < 1 8.5 85 520 8 0 0.55
    12/20/2007 17:12 17 16 1 7 < 1 7.9 80.58 0 0.838
    11/03/2007 17:15 24 21 8.5 < 1 8.1 90.72 500 10 0 130
    10/31/2007 16:44 24.5 22 3 7.5 < 1 7.6 86.64 490 0 0 0.68
    09/09/2007 18:00 32 30.5 8 < 1 3.9 51.09 400 4 0 0.8 70
    09/07/2007 18:10 32 28 3 7 < 1 5.9 74.34 410 3 0 0.56
    08/31/2007 08:00 25 26.5 3 7 4.9 60.27 410 0 0.16 0.9
    07/14/2007 17:30 28 25 8 < 1 7 84 300 7 0 0.8 440
    06/29/2007 09:00 26.5 22 5 7.5 < 1 8.45 96.33 460 0 0.45
    06/10/2007 15:00 32 26 8.5 < 1 5.6 68.32 510 4 0 > .8 30
    05/12/2007 16:55 32 29.5 8 < 1 5.8 74.82 580 3 0.27 > .8 60
    04/12/2007 18:00 24 22 < 1 7.6 86.64 600 3 0.1 10
    03/04/2007 15:15 18 15 < 1 8.25 82.5 610 3 0.14 > .8
    02/04/2007 15:30 19 14 8 < 1 9.05 88.69 590 4 0 > .8 10
    01/07/2007 15:15 17 13 8.5 < 1 6.8 470 3 0.39 > .8
    12/10/2006 16:30 11.5 13 8 < 1 6.3 500 0 0.02 .8
    11/11/2006 11:50 14 20 8.5 < 1 7.1 500 7 0 > .8
    10/17/2006 16:15 29 28 8.5 < 1 6.2 490 7 0 > .8
    09/09/2006 18:45 26.5 26 Low 8.5 < 1 5.7 69.54 490 1 0.04 > .8
    07/23/2006 17:00 33 30 Low 8.5 < 1 5.95 77.35 490 7 0.01 > .8
    07/01/2006 13:45 32 26.5 Low 8.5 < 1 5.5 67.65 480 7 0 > .8
    05/28/2006 14:45 27.5 23 Low 8.5 < 1 6.35 73.66 480 7 0.01 > .8
    04/30/2006 15:30 31 23 Normal 8 < 1 8.25 95.7 460 1 1 > .8
    03/23/2006 12:45 11 17 Normal 7.5 < 1 5.6 58.24 390 0 1.17
    02/26/2006 15:30 18 16 Low 8 < 2 8.2 83.64 530 1 0.39 > .8
    01/21/2006 13:20 12.5 12 Normal 8 < 1 8.3 78.02 520 5 0 > .8
    12/19/2005 11:30 8 10.5 Normal 8 < 1 9.25 84.18 540 7 0 > .8
    05/06/2005 13:05 18.9 24.47 Normal 8.1 9.68 115.09 470 6 0
    03/11/2005 14:30 21.5 14.9 Normal 8.2 9.81 97.87 400 4 0
    01/11/2005 10:15 19 15.3 Normal 7.8 8.5 85.46 400 6 0
    12/10/2004 15:06 26.2 Normal 7.5 8.85 400 4 0
    11/21/2004 15:06 19.5 20.5 Flood 8 8.3 92.13 400 0 1.8
    10/17/2004 13:00 29.2 24 Low 8 5.85 69.03 460 14 0
    09/13/2004 19:30 26.1 27.5 Normal 7.9 7.15 89.38 470 0 0.01
    08/15/2004 16:30 30.5 28.5 Normal 7.8 6.1 77.47 480 16 0
    01/20/2001 14:30 12 11 7.1 < 1 9.6 86.4 520 2 0.5
    08/09/2000 17:40 36 34 7.8 < 1 7.9 106.8 1 0.01
    05/18/2000 18:30 30 23 8 < 1 7.8 88.9 0
    05/18/2000 18:30 29 23 8 < 1 7.7 87.8
    04/18/2000 14:00 25 24 Normal 7.4 1 7.6 88.2 5 0.5
    03/19/2000 18:15 8.65 8.7 Normal 7.6 < 1 8.7 74.1 2 0.5
    02/06/2000 17:38 17 13 Normal 8.1 < 1 10 94 4 0
    12/31/1999 11:30 20 17 Normal 8.1 < 1 8.7 88.7 19 0
    11/06/1999 11:05 23 24 8.2 < 1 8.4 98 7 0
    09/26/1999 16:30 33 25 7.2 < 1 6.3 73.8 2 0.1
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