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

  • Site 27
  • Lake Austin below Mansfield Dam
  • 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)
    10/14/2025 13:30 30 22.5 1 8 < 2 4.3 49.45 450 30 0 > 2.5
    09/22/2025 09:30 27 21 1 7.5 1.2 13.44 460 15 0 > 2.5
    08/21/2025 13:00 34 21 1 8 < 1 5.05 56.56 490 5 0
    07/22/2025 12:00 31 19 1 8 < 2 6 64.8 510 9 0
    06/19/2025 09:30 28 18 1 8 < 1 4.6 48.76 510 7 0
    05/20/2025 10:30 30.5 16 1 < 1 6.15 62.73 13 0
    04/18/2025 09:00 23 15.5 1 8 < 1 6.9 69.69 510 13 0
    03/19/2025 11:30 24 14 1 8.5 < 1 9.7 95.06 510 15 0
    02/25/2025 09:45 15 11.5 1 8 < 1 8.8 81.84 510 1 0.08
    01/15/2025 13:00 16 14.5 1 8 < 2 9.65 95.54 520 5 0
    11/20/2024 13:30 18 20.5 1 8 < 1 9 99.9 520 2 0.48
    10/14/2024 09:00 21 19 1 < 1 1.7 18.36 30 0
    09/17/2024 09:00 21.5 19 1 8 < 2 2.1 22.68 560 12 0
    08/20/2024 09:00 28 18 1 7.5 < 1 1.7 18.02 550 10 0
    07/16/2024 11:00 31 19 1 8 < 1 5.55 59.94 550 2 0.02
    06/19/2024 10:00 25.5 17.5 1 8 < 2 6.2 65.1 550 7 0
    05/15/2024 11:00 29 16.5 1 8 < 1 8.45 87.04 550 2 0.07
    04/18/2024 11:00 29 17 1 8 < 1 7.8 81.12 550 2 0.02
    02/20/2024 11:00 18.5 12 1 7 < 1 9.3 87.42 550 10 0
    01/17/2024 14:00 8.5 11 1 8 < 1 10.2 93.84 540 9 0
    12/20/2023 14:00 23 17 1 8 < 2 9.4 97.76 530 4 0
    11/14/2023 10:00 17.5 18 1 7.5 5.45 57.77 530 1 0.14
    10/18/2023 10:30 22 18 1 7 < 2 3.1 32.86 530 13 0
    09/20/2023 10:30 29 20.5 1 7.5 < 1 2.9 32.19 510 4 0
    08/15/2023 11:00 29.5 19.5 1 7.5 < 2 5.25 57.22 510 23 0
    07/19/2023 09:45 30.5 18.5 1 7.5 < 2 4.1 43.87 510 26 0
    06/15/2023 11:00 31 19 1 7.5 < 2 4.55 49.14 480 5 0
    05/17/2023 13:00 28 20 1 7.5 < 1 8.8 96.8 490 1 1.61
    04/19/2023 10:00 23 14.5 2 7 < 1 7.7 76.23 12 0
    03/15/2023 11:30 17.5 13.5 1 8 < 2 9 87.3 510 13 0
    02/15/2023 13:30 27 15 1 8.2 < 2 9.9 99 490 3 0.04
    01/18/2023 12:00 22.5 15 1 7 < 2 7.2 72 490 29
    12/21/2022 13:30 10.5 15 1 7 < 2 9.25 92.5 490 1 0.82
    11/16/2022 10:15 12 18 1 7 < 2 7.9 83.74 480 1 0.13
    10/18/2022 15:15 20 22 2 7 < 2 5.4 470 1 0.72
    09/21/2022 11:00 29.5 22 1 7 < 2 3.5 39.9 460 14 0
    08/18/2022 11:00 33 21 1 7 < 2 3.15 35.28 440 30 0
    07/21/2022 13:30 35 22 1 7 < 2 5.25 59.85 450 14 0
    06/15/2022 11:45 30.5 16.5 2 7 < 1 5.6 57.68 460 11 0
    05/19/2022 13:00 32 15 2 7 < 2 6.33 63.3 450 14 0
    04/21/2022 12:30 24 14 2 7 < 1 7.85 76.93 470 1 0.1
    03/17/2022 13:00 21 13.5 1 7 < 1 9.53 92.44 470 9 0
    02/16/2022 10:45 18.5 14 1 7 < 2 10.55 103.39 480 12 0
    01/19/2022 10:30 19 15 1 7 < 2 8.2 82 480 8 0
    12/16/2021 12:15 22.5 16.5 1 7 < 1 5.7 58.71 480 10 0
    11/20/2021 13:00 23 17 1 7 < 1 6.6 68.64 500 16 0
    10/25/2021 14:00 29.5 18 1 7 < 2 4.35 46.11 500 11 0
    09/17/2021 14:15 34 17 1 7 < 2 4.4 480 11 0
    08/18/2021 14:40 33 16.5 1 7 < 1 4.95 50.98 480 3 0.68
    07/21/2021 14:15 30.5 15 1 7 < 1 5.7 57 480 2 0.4
    06/24/2021 10:30 31 15 2 7 < 1 6.1 61 470 2 0.05
    06/18/2021 14:00 31 19 1 7 < 1 7.5 81 450 10 0
    05/19/2021 14:00 21 16 1 7 < 1 9.4 95.88 450 1 0.71
    04/22/2021 10:30 15 12 2 7 < 2 8.5 79.9 450 6 0
    03/17/2021 11:00 19.5 10.5 2 7 1 8.35 75.98 450 0 0.04
    01/22/2021 10:00 15.5 14 2 7 < 1 9.2 90.16 450 2 0.23
    12/17/2020 14:30 20 16 7 < 1 8.75 89.25 450 4 0
    11/18/2020 13:15 24.5 19 7 < 1 5.6 60.48 450 30 0
    10/21/2020 14:00 31 18.5 7 < 1 3.8 40.66 440 30 0
    09/16/2020 11:32 30 17 7 < 2 3.7 38.48 450 6 0
    08/19/2020 15:00 37 16 7 < 2 4.75 48.45 430 15 0
    09/15/2012 11:40 21 19 1 7.5 2.4 25.92 500 1 2 > 2.43
    07/22/2012 13:52 31.5 23.5 1 7 4.9 57.33 510 7 0 > 2.43
    04/05/2012 14:25 28.5 16.5 1 8 10.4 107.12 480 9 0 1.83
    01/15/2012 15:00 24.5 14 1 14 0 1.75
    09/24/2011 14:00 33 26.5 2 8 4.7 57.81 460 0 0 > 2.45
    07/23/2011 14:30 35.5 24.5 1 7.5 5.25 62.48 450 14 0 2
    06/18/2011 14:40 36 19.5 1 8 5.3 57.77 440 100 0 > 2.06
    04/30/2011 14:50 29 15 1 8 5.9 59 450 20 0 1.5
    02/27/2011 17:00 24 14 1 8 9 88.2 440 15 0 1.75
    12/11/2010 15:00 20 18 1 8 7.3 77.38 440 25 0 > 2.25
    10/19/2010 17:00 29 21.5 1 8 5.2 58.76 460 15 0 > 2.25
    09/25/2010 14:21 32 23.5 8 5.6 65.52 450 5 0 > 2.25
    08/21/2010 15:30 30.2 20.2 2 8 5.2 57.41 450 30 0
    11/11/2007 12:00 27.5 23 1 < 1 6.5 75.4 21
    10/07/2007 17:15 29.5 26 1 7 < 1 2.1 25.62 0
    08/27/2007 17:00 33.5 26 1 7 < 1 3.2 39.04 410 3 > 1.2
    06/14/2007 18:00 33 15 3 7 4.9 49 440 1 0
    05/14/2007 12:50 34 20 1 7.5 460 15 0
    10/01/2006 10:15 28.5 24 2 7.6 2 23.6 480 8 0
    08/27/2006 11:00 33 24 No Flow 7.7 2.23 26.26 500 0
    07/11/2006 18:30 37.5 18 Normal 7.5 5.15 54.59 440 4 0
    05/10/2006 28.5 15 7.5 6.6 450
    05/09/2006 18:45 28.5 15 Normal 7.5 6.6 66 450 2 2
    03/12/2006 17:20 23.5 18 Normal 8 11.83 125.35 430 6 0
    01/03/2006 08:40 14 15 Normal 7.9 7.05 70.5 460 0
    10/29/2005 09:40 23.5 20.5 Low 7.7 3.8 42.18 470 0
    09/10/2005 09:00 27.5 19.5 No Flow 7.5 1.8 19.62 450 0
    08/09/2005 18:00 30 19 Normal 7.9 6.65 71.82 460 1 0.5
    05/10/2005 18:00 28 15.5 Normal 8.1 < 1 7.25 73.23 430 2 0.5
    04/10/2005 09:15 20 14.5 Normal 7.8 6.3 62.37 410 5 0
    03/13/2005 10:45 30.5 16 Normal 7.8 < 1 420 7 0
    01/11/2005 16:25 26 16 Normal 8.6 < 1 13 132.6 410 7 0.005
    10/11/2004 16:30 23 24.5 High 7.9 4.15 49.39 440 6 0
    07/11/2004 17:30 29 19 Normal 7.8 < 1 3.85 41.58 480 12
    05/30/2004 12:05 25.5 16 Normal 8 6.6 67.32 440 0 0.01
    05/08/2004 10:15 31 18 Normal 7.9 6.95 73.67 470 3 0.1
    04/10/2004 09:00 19.5 13.5 Normal 8 7.75 75.18 460 4 0
    02/07/2004 10:25 12 13.5 No Flow 8.2 9.2 89.24 460 3 0.1
    10/16/2003 16:15 30 23 Normal 8.2 < 1 9.05 104.98 440 4 0.1
    09/06/2003 10:20 24 19 Normal 7.8 < 1 4.83 52.11 440 0
    05/13/2003 13:15 29 14 Normal 8 < 1 7.75 75.95 450 1 1.5
    04/22/2003 09:00 20 13 Normal 7.2 7.6 72.96 450 2 0.1
    03/02/2003 09:30 10 14 Normal 7.6 < 1 9.75 95.55 440 1 0.1
    01/11/2003 10:20 6.5 12.5 Low 8.4 < 1 9.4 89.3 490 0
    11/10/2002 09:00 24 21.5 No Flow 8.1 < 1 6.7 75.71 420 6 0
    09/15/2002 09:40 24 25 Normal 7.6 < 1 2.25 27 350 6 0
    08/04/2002 10:40 32.5 25.5 Low 7.7 < 1 6.6 77.9 390 1 0.1
    05/12/2002 15:00 31.5 14 High 8.1 < 1 7.8 74.9 410 26 0
    04/18/2002 09:45 22 14 Normal 8 < 1 7.7 73.4 420 2 0.1
    02/24/2002 10:00 17.5 14.5 Normal 8.2 < 1 420 8 0
    12/09/2001 12:45 14 16 High 7.8 < 1 6.1 61 470 1
    11/12/2001 09:00 21 19 7.6 < 1 3.4 35.5 460 4 0
    09/03/2001 10:00 27.5 17.5 Normal 6.9 < 1 2.8 28.3 570 3 0.2
    07/28/2001 10:00 30 18 Normal 7.7 < 1 4.7 48.4 460 0
    05/27/2001 11:30 25 17 Normal 7.8 < 1 6 60.7 450 1 0.33
    04/18/2001 15:00 19.5 17 Normal 8.4 < 1 10.2 104 460 1 0.5
    01/28/2001 14:00 23 14 7.6 < 1 11.6 111.4 480 1 0.1
    11/26/2000 12:30 16.5 17 Normal 7.1 < 1 6.1 62.2 480 3 0.5
    10/03/2000 15:00 34.5 25.5 High 8.6 < 1 5.3 63.1 530 13 0
    09/04/2000 11:00 36 25 Low 7.4 < 1 2.7 31.3 3 0
    07/02/2000 10:45 29 20 Normal 7.9 < 1 4.9 52.4 14 0
    04/18/2000 15:00 26 High 8 < 1 8.5 7 0
    02/12/2000 11:15 12.5 14 Normal 8.2 < 1 9.7 92.6 11 0
    01/02/2000 11:00 21.5 16 Normal 8.2 < 1 8.4 84.5 13 0
    11/06/1999 11:30 24 21 Low 8 < 1 6 65.5 7 0
    09/25/1999 10:30 27.5 20.5 Normal 7.9 < 1 3.3 36 0 0.1
    09/05/1999 11:30 32 20.5 Normal 7.4 < 1 3.3 36 0
    06/27/1999 11:30 32 21 Normal 8 < 1 7.4 81.4 2 0.1
    04/22/1999 10:50 24 16 Normal 8 < 1 6.4 64 11 0
    03/11/1999 10:30 23 14.5 Normal 7.6 < 1 7.5 72.8 1 0.25
    01/16/1999 10:40 19.5 13.5 7.6 < 1 10.1 96 26 0
    12/18/1998 10:30 13 18 Normal 7.6 < 1 7.2 74.4 8 0
    12/05/1998 10:00 24 20 Normal 7.6 3.9 41.6 2 0.15
    10/24/1998 09:30 12.5 18 Normal 8 < 1 2.7 27.6 4 0.01
    09/19/1998 10:00 33.5 23 Normal 7.5 < 1 3.6 41 3 0.5
    09/05/1998 10:00 26.5 22 Normal 7.9 < 1 2 22.4 4 0.08
    07/25/1998 10:45 33 19 Normal 8 < 1 4 42.4 13 0
    06/27/1998 10:30 35.5 18 Normal 8.4 < 1 6 62.4 16 0
    06/07/1998 10:30 24.5 17 Normal 8 < 1 7.5 76 2 0.1
    04/18/1998 10:30 19 15 Normal 8.1 < 1 8.9 87.2 5 0
    04/04/1998 10:15 17 15.5 High 7.3 < 1 8.8 87.1 5 0
    02/17/1998 10:30 14 14 8.2 < 1 9.25 1
    01/14/1998 10:30 11 13 8.4 < 1 8.5 6 0
    05/11/1997 15:07 30 17 7.6 < 1 8.1 85
    01/26/1997 12:30 25 11.5 7.9 < 1 11.3 100
    12/27/1996 13:00 20 15.5 7.5 < 1 10.8 110
    12/08/1996 15:05 22.5 18 7.8 < 1 11 115
    11/10/1996 13:10 28.5 20.5 7.5 < 1 6.7 73
    10/13/1996 12:45 36 25 7.8 < 1 6.5 80
    08/25/1996 11:35 27 25 Normal 7.5 < 1 5.1 65 0
    08/25/1996 11:35 27 25 Normal 7.5 < 1 5.1 65 0
    07/29/1996 12:25 32 24 Normal 7.7 < 1 7.2 90
    07/06/1996 13:15 36 21 7.7 < 1 5.3 60
    06/02/1996 12:00 23 15 High 8 < 1 5.7 55
    02/25/1996 09:00 21 13 7.6 < 1 6.5 65
    01/27/1996 13:00 12 13 Normal 8.2 < 1 11.3 100
    12/23/1995 14:00 9 15 Normal 8 < 1 9.7 95
    12/09/1995 14:10 7 16 8.4 < 1 9.3 95
    11/24/1995 11:10 22 18 Normal 7.9 < 1 7.3 80
    11/12/1995 24:00 22 19 Normal 8 < 1 7.3 80
    01/07/1995 24:30 6 12 Normal 8.1 < 1 11.3 100
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