LCRA LogoColorado River Watch Network (CRWN) Water Quality Data

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)
01/28/2005 09:35 7 7 Flood 8.2 10.7 89.88 480 0 1.78
01/14/2005 09:45 6.5 11 Normal 8.2 10.55 97.06 510 9 0 > .8 110
12/28/2004 09:00 11 9.5 Normal 8.2 10.9 97.01 530 22 0 > 1
12/10/2004 09:00 14.5 13 Flood 8.2 10.2 97.92 560 5 0 30
11/26/2004 09:45 23 15 Flood 8.2 8.4 84 570 3 0.25 > 1.8 380
11/13/2004 09:06 11 14 Normal 8.2 9.3 91.14 560 12 0 > .7 70
10/22/2004 09:58 25 24 Low 8.2 5.5 64.9 520 20 0 > .4 110
10/09/2004 08:50 20 21 Low 8.2 6.3 70.56 520 7 0 > .5 100
09/17/2004 08:03 22.5 25 Normal 8.2 5.35 64.2 540 3 0.98 > .5 100
09/10/2004 08:40 20.5 22.5 Low 8.2 6.2 71.3 520 21 0 50
08/23/2004 08:23 26 27 Low 8.2 5.4 66.96 550 7 0 > .6 380
08/13/2004 07:52 16.5 24 Normal 8.2 6.1 71.98 540 16 0.15 > .75 90
07/30/2004 08:20 24 26.5 Normal 8.2 6.2 76.26 560 1 0.35 > .9 40
07/16/2004 08:27 25.5 26.5 High 8.2 6.2 76.26 580 16 0 30
07/04/2004 08:10 24 24.5 Flood 8.3 6.6 78.54 620 4 0 > 1.8 170
06/18/2004 08:17 24.5 25.5 High 8.2 6.6 79.86 600 9 0 > .9 120
06/04/2004 09:20 26 27 Normal 8.2 5.9 73.16 610 1 0.9 > .5 50
05/21/2004 08:32 24 25 Normal 8.2 6.8 81.6 600 7 0 > .6 30
05/07/2004 09:20 23 20.5 Normal 8.2 7.8 86.58 590 6 0 > .65 200
04/23/2004 09:28 23.5 21 High 8.2 8.6 96.32 610 12 0 > .75 110
04/09/2004 10:10 23 19 Normal 8.2 7.4 79.92 600 3 1.22 > .5 150
03/19/2004 08:57 19.5 19.5 Normal 8.2 7.7 83.93 580 15 0.05 > .4 10
03/05/2004 09:00 15 15 Normal 8.2 8.7 87 540 1 0.75 > .4 320
02/20/2004 09:30 17 13.5 Low 8.2 9.2 89.24 520 36 0 > .28 30
02/07/2004 09:10 2 8 Low 8.2 10.05 86.43 530 22 0.15 > .23 30
01/23/2004 09:47 14 12 Low 8.2 8.85 83.19 530 7 0.1 > .2 130
01/09/2004 08:42 8 9.5 Low 8.2 9.4 83.66 510 92 0.04 > .15
12/20/2003 08:01 -3 7 Low 8.4 10.05 84.42 510 72 0 > .19
11/28/2003 08:26 2 10.5 Low 8.2 9.2 83.72 550 50 0 > .23 30
11/15/2003 08:05 20.5 18 Low 8.1 6.85 72.61 540 37 0 > .2 30
10/24/2003 08:10 17 18.5 Low 8.1 6.6 70.62 540 15 0 > .23 20
10/10/2003 08:23 20 22.5 Low 8 5.7 65.55 540 1 0.5 > .25 50
09/26/2003 08:00 20 23 Low 8 6 69.6 540 5 0 > .25 70
09/13/2003 08:30 20 23 Low 8.2 6.1 70.76 540 1 2 > .25 130
08/30/2003 08:27 27 26.5 Low 8 4.55 55.97 510 8 0 .2 12
08/15/2003 08:03 20.5 24 Low 8.2 5.55 65.49 510 1 0.6 > .3 3.5
08/02/2003 08:00 25.5 26.5 Low 8.1 4.75 58.43 520 17 0 2
07/19/2003 08:21 25 26.5 Low 8 5.8 71.34 510 3 0.25 > .4 2.5
07/06/2003 08:15 25 25.5 Low 8.2 6.3 76.23 490 1 0.3 > .5 4
06/20/2003 08:15 24.5 26 Low 8.2 6.4 78.08 500 18 0 > .4
05/30/2003 08:16 22 24 Low 8.2 6.4 75.52 490 4 0 > .4 10
05/16/2003 09:00 27.5 25.5 Low 8.2 6.65 80.47 510 4 0 > .5 60
05/03/2003 07:56 23 24 Low 8.2 6.7 79.06 530 13 0 > .5 50
04/18/2003 08:18 20.5 20 Normal 8.2 7.7 84.7 530 12 0 > .6 70
04/04/2003 09:07 20 19.5 Normal 8.2 7.85 85.57 540 7 0 > .7 30
03/21/2003 09:10 14 13.5 Normal 8.3 10.1 97.97 550 3 0.4 > .7 110
03/08/2003 09:15 14 13.5 High 8.3 10 97 560 5 0 > 1.1 30
02/16/2003 10:00 5.5 12 Normal 8.3 10.4 97.76 560 3 0.34 > .7 100
02/01/2003 09:25 12 11 High 8.2 10.7 98.44 560 5 0 > .9 90
01/19/2003 10:00 9.5 8 High 8.2 11.9 102.34 560 7 0 > 1.1 150
01/04/2003 09:10 13 9.5 High 8.2 10.9 97.01 570 5 0 > 1.1 180
12/13/2002 09:15 10 11 High 8.3 10.7 98.44 570 1 0.55 > 1 450
11/28/2002 08:06 0.5 9.5 High 8.2 11.7 104.13 560 2 1.55 > .9 310
11/01/2002 09:25 11.5 16 High 8.3 9.5 96.9 580 3 0 > 1 80
10/18/2002 10:45 20 19 Low 8.2 7.9 85.32 500 4 0 > .5 50
10/04/2002 09:20 26 25 Low 8 5.95 71.4 510 15 0 > .5 190
09/20/2002 09:25 19.5 23 Normal 8.2 6.65 77.14 520 1 0.38 > .6 150
09/12/2002 09:00 23 25 Normal 8.1 6.9 82.8 540 3 0.3 > .6 70
08/25/2002 00:00 25 27.5 Normal 8 5.6 68.9 560 10 0 .7 210
08/04/2002 08:30 24.5 27 Normal 8.1 6.5 79.3 570 16 0 .9 50
07/12/2002 09:00 28 25 High 8.2 7.4 87.3 580 2 0.76 1.5 190
06/22/2002 09:00 28 25.5 Low 8 5.3 63.1 590 6 0 230
06/09/2002 09:00 26.5 25.5 Low 8 5.2 61.9 590 1 0.2 180
05/26/2002 08:00 20.5 23 Low 7.9 5.3 60.4 600 0 0.02 .3 130
05/05/2002 09:00 25 24 Low 8.2 6.1 70.8 590 9 0 .4 40
04/19/2002 09:00 22 23 Low 8 7 79.2 590 3 0.05 .5 220
04/05/2002 09:30 17 16 Low 8.2 8.6 86 560 4 0 .5 130
03/21/2002 09:30 18 16 Low 8.2 8.7 87 550 1 0.03 .5 300
03/09/2002 08:00 9 15 Low 8.3 8.8 85.8 560 1 0.01 .5 380
02/24/2002 09:00 15 12 Normal 8.1 9.4 86 560 5 0 .5 30
02/10/2002 10:00 11.5 11 Normal 8.2 10.6 95 560 5 0 .5 10
01/26/2002 09:30 9.5 10 Normal 8.3 10.4 91.5 570 2 0.06 .6
01/05/2002 15:00 17 18.5 High 7.6 11.6 121.8 590 4 0.1 .9 20
01/02/2002 09:00 7 10 Normal 8.1 10.4 91.5 610 0 .7 40
12/21/2001 10:00 10.5 13 High 8.3 9.7 91.2 610 3 0.25 1 250
12/02/2001 13:00 21 12 High 8.2 9.4 86 570 4 0.3 .8 20
11/18/2001 11:00 24 19 High 8.3 8.2 86.4 520 3 4.5 1.2 1790
11/04/2001 09:00 21 19 Low 8 6.9 73.1 540 22 0 .5 260
10/21/2001 09:00 18 18.5 Normal 8.1 7 73 550 8 0 .6 60
10/07/2001 09:30 14 17 Normal 8 6.9 70.4 580 2 0.1 .6 50
09/08/2001 08:30 26 26 Normal 7.9 5 60 580 2 1.1 .6 190
04/18/2000 08:10 21 19 Low 7.7 < 1 3.9 41.1
01/16/2000 16:30 21 17 Low 7.6 9.9 101 0
11/14/1999 16:30 25 17 8.3 < 1 10.8 110.2 0
10/23/1999 16:00 28 8.2 < 1 9.2 0
10/02/1999 16:00 31 28 8.4 < 1 9.2 114.1 0
08/28/1999 14:30 34 31.5 Low 8.1 < 1 7.8 102.2 0
08/15/1999 14:45 35 32 8 < 1 6.6 87.1 0
06/27/1999 15:30 31 28 8.2 < 1 7.7 95.5
04/29/1999 15:30 28 27 8.2 < 1 8.4 103.1 0
01/30/1997 15:00 21 10 < 1 10 88
12/12/1996 15:00 25 17 7.6 < 1 8.3 88
11/26/1996 15:00 19 11 7.5 < 1
10/31/1996 15:00 29 24 8 < 1 7.15 84 2 1
10/17/1996 15:00 32 27 7.8 < 1 5.8 72 7
10/03/1996 15:00 29 26 6.9 < 0.5 6.75 80 0 0.01
09/19/1996 15:00 38 33 7.9 < 0.5 9.07 124 1
05/08/1996 14:30 31 27 Low 8.1 1 7.6
05/02/1996 14:30 27 23 Low 8.1 < 1 7.7 90
03/25/1996 14:34 18 7.8 < 1 9.1 95 24 0
03/21/1996 14:30 18 Low 7.8 < 1 9.1 95 20 0
03/08/1996 14:30 16 13 Low 8.1 2 10.45 95 3 0.1
03/08/1996 15:52 16 13 8.1 < 2 10.45 95 3 0.1
03/01/1996 14:30 8 11 Low 8 2 8.1 73 1 0.5
02/16/1996 14:30 21 27 Low 8.2 < 1 10 123
12/06/1995 18 19 Low < 1 8.9 97 9
11/15/1995 14:30 20 18 Low 8.3 < 1 8.1 86
11/01/1995 14:30 23 Normal 8.2 < 1 0
10/20/1995 14:30 26 23 8.1 < 1
10/11/1995 14:30 35 27 Low 8.1 < 1 7.2 87
10/04/1995 14:30 30 25 8 < 1 8.9 107
09/27/1995 14:30 23 25 Low 8.1 < 1 85 5 0
09/20/1995 14:30 29 28 8.1 < 1 8.2 105
09/13/1995 14:30 29 Low 8.2 < 1 9.3 0 0.01
09/06/1995 14:30 36 22 Low 8 < 1 8.1 90
08/30/1995 14:30 29 28 8.1 < 1 8.2 105
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