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

  • Site 241
  • Lake Travis at Arrowhead Point
  • Hydromet Rainfall
  • Hydromet Flow
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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)
    03/19/2013 11:15 17 17 8 8.8 91.52 480 9 0 > 1.75 10
    01/22/2013 11:00 11 13 8 8.85 84.96 500 12 0 2
    12/13/2012 11:35 15 17 7.5 6.3 65.52 510 30 0 2.25
    11/23/2012 10:30 18 19.5 8 7 76.3 30 0 > 2
    09/18/2012 10:45 23 26.5 8.5 5.5 67.65 480 2 1.7 2 10
    08/13/2012 11:10 31.5 31 8.5 6.55 86.46 480 29 0 1.75
    07/11/2012 11:20 28 29 1 8 6.15 78.72 470 1 3.8 180
    06/15/2012 11:20 26 28 3 8 7.25 91.35 480 30 0 1.5 20
    05/18/2012 11:15 23 25 3 8.15 97.8 470 4 0.1 1.5
    04/10/2012 11:00 21 23 3 8 9.05 104.98 490 13 0 1.75
    03/07/2012 11:05 18 16 3 8 8.6 87.72 500 8 0 1.3 10
    01/23/2012 11:15 13.5 14 3 8 9.65 94.57 480 13 0 1.3 10
    11/21/2011 10:35 16 19.5 7.5 7.15 77.94 490 6 0 1.75
    10/26/2011 11:25 22 24 8.5 7.33 86.49 470 17 0 1
    09/16/2011 10:45 27 27.5 8 6.15 76.88 450 30 0 1.5
    08/12/2011 10:45 31 30.5 8 5.83 76.37 420 52 0 1 30
    07/11/2011 10:00 28 30 8 6.25 81.25 420 19 0 1.75
    05/22/2011 11:45 24 24.5 8 7.2 85.68 430 10 0 1.5
    04/21/2011 11:05 24 23 8 7.35 85.26 400 10 0 1.75
    03/22/2011 11:20 20.5 18 8 8.9 94.34 430 17 0 > 1 10
    02/21/2011 11:15 21.5 14.5 8 10.1 99.99 420 12 0 > 1
    01/06/2011 11:55 12.5 15 7.5 8.3 83 430 9 0.05 > 1.5
    10/21/2010 10:30 24.5 25 8 6.9 82.8 420 9 0 1.25 10
    09/06/2010 10:55 27 28 7.5 6.25 78.75 430 0 0.2 > 1.5
    07/29/2010 11:00 29 30 8 6.55 85.15 420 1 1.1 > 1.8 10
    06/28/2010 11:35 29.5 30.5 8.5 6.9 90.39 430 11 0 > 1.8
    05/21/2010 11:05 27 25 8.5 8.15 97.8 450 4 0 > 1.5
    04/15/2010 11:00 20 18 8.5 8.65 91.69 470 22 0 > .75 20
    02/13/2010 11:35 10.5 11 8 8.95 82.34 460 2 0.7 > 1
    01/19/2010 11:40 17.5 12.5 8.5 9.15 86.93 460 4 0 1 80
    12/13/2009 11:45 14 16 8.5 7.4 75.48 450 1 0.3 > 1.4
    11/05/2009 11:00 22 21 8.5 7.25 81.2 470 7 0 1.5
    07/17/2009 11:15 28 30 8.5 6.8 88.4 440 16 0 .85 10
    06/18/2009 11:55 32 28 8.5 7.1 89.46 430 7 0 .75
    05/12/2009 11:45 24.5 24 8.5 8.05 94.99 440 14 0 1.5 20
    04/18/2009 11:50 20 17.5 8.5 8.23 86.36 440 0 2.5 > 2.1 10
    02/10/2009 11:30 27 15 8.5 9.5 95 1 0.6 > .6
    01/09/2009 12:50 21 16 8.5 9.3 94.86 3 0.5 > 1 10
    12/14/2008 11:45 19 16 8.5 8 81.6 430 5 0 > 1
    10/10/2008 11:30 20.5 25 8.5 6.35 76.2 430 3 0.3 1.5
    09/10/2008 10:40 25 29 8.5 6.5 83.2 410 1 0.3 1.7
    08/11/2008 10:55 27 29 8.5 5.85 74.88 410 6 0 1.75 10
    07/10/2008 10:15 29 29 8.5 5.7 72.96 410 3 0.4 2.25
    06/09/2008 12:15 29 26 8.5 6.65 81.13 410 3 0.1 .75 30
    05/12/2008 11:35 18 22 8.5 8 91.2 430 7 0 > 1.25 60
    03/11/2008 11:45 13 13.5 8.5 10 97 410 1 1 > .5 10
    02/11/2008 11:35 19 15 8.5 9.1 91 410 11 0 1.5
    01/11/2008 11:30 19 15 8.5 7.6 76 420 3 0.5 1.75 20
    11/12/2007 11:15 21.5 23 8.5 6.2 71.92 400 28 0 2
    10/11/2007 10:30 22 28 8 4.6 57.96 410 3 0.5
    09/10/2007 11:50 26 30 8.5 6.45 83.85 400 6 0 2.5
    08/10/2007 11:55 29 31 8.5 5.5 72.6 380 8 0 1.75
    07/12/2007 11:45 25 29 8.5 4.75 60.8 410 5 0
    05/10/2007 11:55 22 23 8.5 8 92.8 460 0.5 0.8 3.5
    03/10/2007 11:50 20 17 8.5 9.85 102.44 470 45 0
    01/09/2007 11:40 14 14 8.5 8.4 82.32 480 6 0 10
    11/14/2006 11:15 24 21.5 7.2 81.36 450 26 0
    10/12/2006 11:55 27.5 26.5 6.3 77.49 440 2 2.8
    09/08/2006 11:10 27 28 7.6 5.9 74.34 440
    07/11/2006 11:45 29 28 7.4 6.7 84.42 450 7 0 1.5
    05/09/2006 12:00 29 25 7.1 7.2 86.4 450 1 3.7 2.25
    04/10/2006 12:15 21 20 7 9.1 100.1 460 13 0 1.34
    03/09/2006 11:45 21.5 17 7.3 7.1 73.84 460 0.5 1 2.25
    02/16/2006 11:45 21.5 14.5 7.1 9.1 90.09 470 15 0 > .5
    12/12/2005 12:00 14.5 17 7.4 6.9 71.76 450 16 0 > 2.62 10
    11/06/2005 11:55 28 23 9.4 7.67 88.93 430 6 0.2 2
    10/05/2005 11:45 26 28 6.1 76.86 420 1 0.35 1.75
    09/08/2005 10:45 25 29 8 6.2 79.36 29 0 2.5
    08/03/2005 12:00 31 30 6.6 85.8 410 5 0 1.8
    07/06/2005 10:30 31 30 8.1 7.3 94.9 420 34 0
    05/09/2005 10:55 26 21 8.4 94.08 430 1 2.5 2.25
    04/13/2005 10:50 7.9 10 430 2 1.4 3.5
    03/11/2005 11:40 24 16 8.2 10.1 103.02 420 4 0 > 1.33
    02/10/2005 11:50 9 13 8.2 8.7 83.52 420 2 0.2 2.5
    01/11/2005 11:35 19 15.5 8.2 9.1 91.91 410 6 0
    12/09/2004 15 18 7.8 6.3 66.78 410 3 0.2 > 1.25
    11/09/2004 11:45 24 23.5 8.1 5.35 62.6 420 8 0 2.75
    10/11/2004 11:50 24 26 8.2 5.85 71.37 420 7 0 2.75
    08/25/2004 11:40 24 28 8.4 6.8 85.68 420 2 0.1 2.75
    07/30/2004 11:05 28 29 8.4 6.2 79.36 420 1 0.5 > 3.25
    06/30/2004 10:55 25 27 8.2 7 86.8 430 0 2.15 > 3.75 50
    05/21/2004 11:55 26 24.5 8.3 7.05 83.9 450 6 0 3.75
    04/09/2004 12:20 25 20 8.9 8.65 95.15 450 3 0.1 > 4.25
    03/17/2004 11:10 20 16.5 8.4 9.3 95.79 1.5 0.9 > 4.33
    02/01/2004 11:30 13 13.25 9.1 87.82 7 0.1 2.66
    01/11/2004 11:30 13.5 14 8.4 8.65 84.77 24 0 2.4
    12/08/2003 11:45 20.5 17.5 8.4 8.35 87.68 440 21 0 1.62
    10/31/2003 11:35 27 23.5 8.6 7.3 85.41 430 20 0 2.5
    10/01/2003 11:20 24 26 8.6 6.4 78.08 460 10 0 2.7
    08/27/2003 10:50 31 30 8.5 7.6 98.8 460 16 0.2 3.6
    07/28/2003 10:40 29 29.5 8.5 7.1 91.59 430 21 0 3.2
    06/28/2003 13:00 36 29.5 8 6.9 89.01 420 15 0.1 > 1.6
    05/22/2003 11:30 24 24.5 8 8.1 96.39 450 10 0.1 2.25
    04/22/2003 10:00 17 19 8 9.2 99.36 410 0 0.2 > 1.25
    02/23/2003 11:15 22 12 8.3 10.2 95.88 420 3 1.4 > .75
    12/30/2002 10:00
    12/30/2002 10:00 17.5 15 8.2 8.65 86.5 410 7 0 > 1.25
    11/21/2002 13:40 23 20 8 8.4 92.4 410 16 0 > 1
    10/17/2002 11:00 20.5 24.5 7.9 5.2 61.88 420 3 0.1 3
    10/01/2002 12:00 27 27 8.2 7 86.8 400 12 0 1.5
    08/28/2002 11:15 29.5 30 8.4 7.7 98.6 390 18 0 2
    07/25/2002 10:20 30 30 8.5 7.5 96 410 8 0 3
    06/27/2002 12:30 27 28.5 8.4 7 87.5 420 1 2.3 1.25
    05/30/2002 14:30 32.5 26 8.2 8.5 102 420 2 1.1 2
    04/18/2002 12:20 28.5 22 8 8.3 93 410 3 0 3.1
    02/27/2002 13:15 13 14 8.2 9.1 87.4 0 2.25
    01/21/2002 12:15 20 14.5 7.9 9.1 87.8 400 16 0 2.75 10
    12/18/2001 13:05 17 17 8.2 7 70.9 400 2 0.7
    11/07/2001 10:25 22.5 22 8.1 7.8 86.8 440 25 0 3
    07/25/2001 10:50 30 30 8.3 6.8 87 450 23 0 1.5
    05/24/2001 12:00 29 26 8.1 8.5 102 450 4 2.5 2 10
    04/18/2001 15:45 20 21 8.2 9.5 104.5 1 0.1 2.25
    03/05/2001 11:30 17.5 14 8 10.2 97.9 470 1 1.55 1.25 20
    01/25/2001 11:55 18 12.5 7.8 9.2 85.6 410 9 0 1.25
    11/22/2000 12:30 15.5 18 8 7.5 78 530 4 0 1 30
    10/27/2000 12:00 26 24 8 7.7 89.3 520 0 0.5 1.66 50
    10/02/2000 12:30 26.5 26.5 < 1 6 72.2 510 8 0 1.2
    08/25/2000 11:35 29.5 30.5 8.4 < 1 7 90.3 3 0.4 1.5 10
    07/26/2000 11:45 28 30.1 8.2 < 1 5.6 71.8 3 1.75
    06/30/2000 12:15 28 29.5 8.2 < 1 6.6 83.8 11 0 1.5
    05/26/2000 13:00 30 26.5 8.2 < 1 6.2 75 7 0 1.5
    04/18/2000 15:00 27 22 8.2 < 1 8.7 96.9 7 0 1.5
    03/22/2000 11:30 23.5 18 8.2 < 1 9.2 95.7 1 0.29 2
    02/23/2000 11:30 22 17 8.2 < 1 9.6 97.9 1 0.625 2 10
    01/23/2000 11:30 23 16 7.8 < 1 9.93 101.32 16 0 2.5 30
    12/08/1999 14:00 25 19 7.6 < 1 7.07 76.32
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