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

  • Site 46
  • Colorado River below Longhorn 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)
    08/07/2022 13:22 34 28 3 7.9 2 6.7 84.42 480 30 1.2
    01/17/2022 11:50 14 14 3 7.5 < 1 9.05 88.69 630 6 0 > 1.22
    07/14/2004 10:00 29.5 23.9 Normal 7.7 6.28 73.92 500
    03/07/2004 15:15 20 17 Low 7.5 9.1 94.64 480 3 1 220
    02/08/2004 16:00 10 12 Low 7.9 < 1 9.9 93.06 490 2 0.5
    02/08/2004 16:20 10 12 Low 8 9.95 93.53 480 2 1 110
    01/11/2004 17:00 13 13 Low 8.1 9.75 93.6 470 14 0 110
    12/07/2003 16:15 15 15 Low 8 8.5 85 490 14 0 40
    11/03/2003 15:55 27 24 Low 7.9 7.3 86.14 490 590
    10/14/2003 18:40 18 24 Normal 7.7 8.15 96.17 480 1 2 240
    09/03/2003 19:20 26 26 High 7.8 7.6 92.72 460 7 .5 22
    08/12/2003 17:00 29 25 High 7.8 7.8 93.6 470 1 2 .5 213
    07/06/2003 15:30 28 22 High 7.8 7.7 87.78 450 1
    06/09/2003 17:20 33 22.5 High 7.9 8.4 96.6 430 3 0
    05/08/2003 15:20 30 24 No Flow 7.7 7.7 90.86 450 1 1 250
    04/22/2003 08:45 17 20 No Flow 7.9 8.6 94.6 470 30 0 60
    04/04/2003 16:45 27 22 Low 8 8.15 92.91 460 5 160
    03/03/2003 16:30 14 15 High 8 10.2 102 460 0 0.41 83.25
    02/09/2003 12:15 11 15 Normal 8 9 90 470 1 1 99.9
    12/20/2002 12:50 15 15 Low 8.1 9.35 93.5 540 9 0 90
    11/24/2002 13:30 21 Low 8.2 8.5 95.2 520 14 0
    10/27/2002 14:10 21 22 Low 8 < 1 7.3 83.22 410 1 2 550
    09/29/2002 13:30 27 25 High 8 < 1 7.85 94.2 380 0 0 60
    08/25/2002 13:00 32 29 Normal 8 < 1 7.1 89.5 360 0 20
    07/18/2002 13:00 30 24 High 7.9 < 1 7.4 85.3 300 1 1.5 200
    06/22/2002 13:00 30 23 High 8.1 < 1 7.9 90.1 430 2 1
    05/18/2002 14:00 21.5 19 High 8.1 < 1 7.5 79.5 420 5 0 50
    04/18/2002 13:00 27 23 High 8.1 < 1 8.2 93.5 450 110
    03/16/2002 13:50 18 19 High 8 < 1 9.4 99.1 500 14 0 70
    02/17/2002 13:15 19 17 Normal 8 < 1 9.9 100.5 16 0 30
    01/15/2002 12:47 24 19 Normal 7.9 < 1 9.8 103.4 500 11 0 10
    12/16/2001 12:40 24 19 High 7.8 < 1 9.1 95.9 440 0 4.5 120
    11/01/2001 13:00 29 23 8.1 < 1 7.8 88.3 490 22 0
    10/02/2001 13:00 26 25 Low 8 < 1 7.8 91.5 500 14 0
    09/10/2001 16:32 27 28 Normal 7.9 < 1 6.3 78.1 490 1 1090
    03/04/2001 13:00 19 13 High 7.9 < 1 10.5 98.7 450 1 1.3
    03/04/2001 13:20 19 13 High 7.9 < 1 11.1 106.56 450 1 1.3
    01/28/2001 13:20 19 15 8 < 1 10 98 460 0 90
    11/26/2000 14:00 25 26 Normal 8 < 1 9.4 112.8 540 1 0.1 170
    10/29/2000 13:30 29 27 Normal 8.1 < 1 7.3 89.1 430 0 0.01 1100
    09/30/2000 26 25 Low 8.1 < 1 6.7 79.1 0 210
    08/30/2000 09:30 29 31 Low 8.1 < 1 6.5 84.5 8 200
    07/30/2000 17:00 33 30 High 8 < 1 6.7 85.8 0 0.2 160
    06/30/2000 11:00 30 28 Normal 8.1 < 1 6.7 83.1 18 120
    05/30/2000 10:20 30 28.5 Low 7.8 < 1 6.9 86.3 10 130
    04/18/2000 25 24 Low 8.1 < 1 7.5 87 6 0
    04/18/2000 10:00 25 24 Low 8.1 < 1 7.5 87 6 0
    08/18/1999 18:15 35.5 30.5 Normal 8.1 < 1 6.8 87.7
    06/17/1999 17:52 30 7.9 < 1 8.3
    06/03/1999 09:00 29 23 7.9 < 1 7.3 83.2 58 0 289.85
    06/03/1999 17:40 31 27 Low 8 < 1 7.8 95.2
    05/15/1999 08:47 27 22 Low 7.9 8.1 90.2 4 0
    04/22/1999 17:00 32.5 18.5 8 < 1 7.9 83
    07/15/1998 11:45 31.5 27 High 7.8 < 1 7.6 92.1 1 0.01 1
    07/14/1998 10:00 31 27 Normal 8.3 < 1 7.7 93.9 1
    03/19/1998 12:00 18 15 High 5.3 < 1 9.9 97.5 1
    02/09/1998 09:30 10.5 16.5 7.8 < 1 9.2 96 2 1
    01/18/1998 10 14 7.7 < 1 8 86
    12/28/1997 10:00 18.5 14 6.4 < 1 9.9 95 4 0
    12/07/1997 09:30 14 17 7.6 < 1 7.75 88 0
    11/04/1997 08:00 11.5 19.5 7.7 < 1 7.65 90
    10/09/1997 09:00 24.5 25 6.9 < 1 7.55 118 0 0.2
    07/13/1997 09:30 27.5 25 7.2 < 1 7.6 119
    07/09/1997 08:00 28 26.5 < 1 7 117
    05/05/1997 10:45 19.5 16.5 7.8 1 10.5 8
    02/03/1997 13:30 21 14 7.8 < 1 9.9 96 1
    01/25/1997 17:00 14 16 7.6 < 1 9.25 95 2
    01/05/1997 15:00 15 16 7.8 < 1 9.85 99
    12/08/1996 9:00 9 12 7.8 < 1 9.5 85 4
    11/23/1996 15:30 24.5 20 1 7.05 80 0
    10/22/1996 11:30 14 23 7.8 < 1 7.45 103 1
    10/06/1996 13:30 24.5 25.5 7.5 < 1 7.35 60 2
    08/31/1996 9:00 26 25 Low 7.3 < 1 6.7 95 1
    07/24/1996 7:30 36 Normal 7.1 6.5
    06/18/1996 12:45 36 26 Normal 7.6 < 1 8.1 118
    04/06/1996 08:00 7 11 High 7.2 < 1 9.3 88 1
    03/03/1996 11:53 22 16 Low 8.2 < 1 10.45 3 0.5
    02/18/1996 11:00 20.5 Normal 7.5 1.5 8.3 8 0
    01/21/1996 09:18 24 12 Normal 7.2 < 1 9.65 4 0
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