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)
05/07/2013 10:00 25 21 3 6.9 5 56 300 8 1.5 > .5
02/18/2013 11:30 22 28 3 7.1 < 1 7.5 94.5 14 0 > 1
11/12/2012 11:00 28 22 1 7.1 < 2 4.4 50.16 30 0
10/11/2012 10:30 32 25 3 7.1 < 2 4.8 57.6 595 18 0 > .33
08/29/2012 10:30 29 29 2 7.4 < 1 2.8 35.84 350 14 0
07/26/2012 12:00 32 29 3 7 < 1 4.8 61.44 240 4 0 .33
02/28/2011 12:00 28 21 3 7.4 < 1 6.4 71.68 500 8 0 49.95
10/26/2010 11:30 24 25 3 7.8 < 1 5.6 67.2 30 0 > .3
07/26/2010 10:00 30.5 29 4 7.5 < 1 4.1 400 8 0.2 .38 249.5
05/26/2010 10:00 26 27 3 7.4 < 1 3.75 46.5 17 0 .3 49.95
04/28/2010 09:30 21 22 3 8.4 < 1 5.05 57.57 710 15 0 > .38
03/26/2010 09:46 14 16 3 8.2 < 1 7.4 75.48 7 0.3 > .3 66.6
02/11/2010 13:30 9 10 5 8.2 < 1 8.2 240 1 0.75 .15
10/07/2009 11:30 32 28 3 7.6 < 3.1 39.06 7 0.25 1.32 83.25
08/18/2009 12:00 34 27 2 7.8 < 1 4.4 54.56 570 4 0 83.25
06/28/2009 11:00 32 30 2 7.6 5.15 66.95 30 0 .2 66.6
02/27/2009 10:30 21.5 20 2 7.9 < 1 6.1 7 0
09/26/2008 16:30 34.5 26 3 7.7 < 1 5.3 64.66 430 14 0 > .3
08/25/2008 11:30 29 28 5 7.4 < 1 3.2 380 6 0 > .3
05/14/2008 10:30 25 25 3 7.8 < 1 4 48 740 0 0 .2
04/22/2008 10:30 25 24 3 8 < 1 5.4 63.72 760 6 0 .38 49.95
04/02/2008 11:00 26 24 3 8 < 1 5.7 67.26 640 7 0
02/18/2008 10:30 20 17 5 7.4 < 1 5.7 1 0.5 0.3
05/24/2007 10:00 26 25 3 7.8 < 1 4.8 57.6 1 0.7 .45 41.62
12/20/2006 12:30 23.5 20 3 7.6 < 1 4.2 46.2 490 1 0.3 .3
11/01/2006 00:00 24 22 3 7.2 < 1 5.7 64.98 240 7 0 .41 49.95
08/05/2006 11:30 32 29 Normal 7.3 < 1 2.2 28.16 210 12 0
07/29/2006 11:30 29 29 Normal 7.4 < 1 310 9 0 33.3
05/11/2006 11:30 23.5 24 Low 8 < 1 7.7 90.86 430 5 0
04/07/2006 11:30 26 23 Normal 7.4 < 1 3.5 40.6 220 6 0 249.75
02/23/2006 12:00 17.5 18 Normal 8.3 < 1 8.7 92.22 0 33.3
02/23/2006 11:00 20 18 Low 8 7.8 82.68 370 0 49.95
01/10/2006 10:30 15 13 Low 7.6 < 1 8.1 77.76 430 2 0.25 33.3
12/02/2005 10:30 22 17 Normal 7.7 < 1 6.4 66.56 530 6 0 482.85
06/15/2005 10:30 30 29 Normal 7.5 < 1 4.5 57.6 390 14 0 33.3
05/18/2005 10:30 26.5 24 Normal 7.5 < 1 4.5 53.1 350 0 116.55
04/20/2005 10:45 24 23 8 < 1 6.2 71.92 760 > 12 16.65
03/06/2005 10:30 17.5 16.5 High 7.4 7.15 73.65 170 6 2 1615.05
09/02/2004 12:00 29 27 Normal 8 < 1 6.2 76.88 670 0 .3
07/31/2004 09:05 29 30 Normal 8 < 1 5.9 76.7 630 0 .3
07/08/2004 11:30 32.5 30 High 7.4 < 1 4.4 57.2 320 7 0 133.2
05/09/2004 12:30 25 23 High 7.6 < 1 7.25 84.1 210 7 0 .15 133.2
03/11/2004 10:15 Normal 7.7 < 1 9.3 600 0 1.8 116.55
02/16/2004 12:30 17 12 High 7.6 < 1 11 103.4 140 2 1
12/23/2003 11:45 17.5 14 Normal 8 < 1 8.5 83.3 240 1 0.12 .15
09/14/2003 10:45 30 28 High 7.5 1 4.3 54.18 190 2 2 216.45
08/17/2003 09:45 28 29 Low 7.4 1 3.5 44.8 360 0 > 1.5 8
08/02/2003 31 29 Normal 7.1 1 4.2 53.76 270 1 .38
08/02/2003 09:00 31 29 Low 7.1 < 1 4 51.2 270 2 2 1.5
06/15/2003 09:30 25 27 Low 7.2 < 1 4.2 52.08 2 0.5 .3 5.5
04/22/2003 11:00 23 24 Normal 7.6 1 4.6 54.28 2 0.3 > .3
08/03/2002 11:30 35 29.5 Normal 7.1 1 3.5 45.15 300 18 0 .15 8
07/09/2002 10:40 27.5 28 Normal 7.4 < 1 4.2 52.1 270 0 0.125 .3 282
06/13/2002 10:30 30 29 Normal 7.6 < 1 3.6 45.4 570 0 < .38 732.5
03/04/2001 09:30 15 15 Normal 7.8 < 1 7.8 76.4 350 1 2 .3 399.6
02/04/2001 10:30 18 14 High 7.2 < 1 8 76.8 170 6 0 .1 749.25
12/11/2000 10:30 25 20 Normal 7.1 < 1 6.4 69.1 240 5 0 .25 349.5
11/05/2000 11:00 25 24 Normal 7.4 < 1 4.6 53.4 600 0 2 1.8 199.8
10/17/2000 10:45 28.5 23.5 Normal 7.7 < 1 6.3 72.5 640 0 < .3 33.3
09/17/2000 11:30 30 24 Normal 7.8 < 1 6.4 74.2 520 < 2.74 16.65
08/05/2000 17:15 33 30 Normal 8.3 1 7.1 90.9 4 0 .3 33.3
02/12/2000 15:20 19.5 17 Normal 7.4 < 1 8.9 90.8 10 0
02/05/2000 12:30 17 12 Normal 8 < 1 12 110.4 .27
01/15/2000 11:45 23 18 Normal 7.6 < 1 9.3 96.7 2 0.1 < .35 149.85
12/04/1999 11:00 27 24 7.3 < 1 4.5 52.2 0.5 < .15 133.2
10/13/1999 11:30 30 25 Normal 7.4 < 1 5.6 66.1 1 .15 166.6
09/05/1999 11:15 32 29 Normal 7.7 < 1 6 75.6 1 2 .21 715.95
08/09/1999 12:01 40 29 5.4 68 4 0 83.5
08/01/1999 10:45 34 30 Normal 7.4 < 1 5 64 5 0 .23 266.4
07/20/1999 15:00 28 30 High 7.8 < 1 6.2 79.4 0 0.5 .46
07/01/1999 11:40 31 30 Normal 7.5 < 1 5.1 65.3 6 0 .2 299.9
06/02/1999 10:30 29 27 Normal 7.4 < 1 4.2 51.2 4 0 .3 433.15
05/04/1999 12:55 29 26 Normal 7.8 < 1 7.7 92.4 6 1.25 .23
05/02/1999 10:20 23.5 23 Normal 7.6 < 1 6.4 73 5 0 .46
04/22/1999 10:00 25 25 Normal 8 < 1 7.3 85.6 0 .24
03/14/1999 11:00 8 13 Normal 7.9 < 1 8.6 80.8 2 0.5 .3
02/07/1999 10:45 22.5 20 Normal 7.9 < 1 8 86.4 0.1 .38
01/17/1999 11:25 22.5 15 Normal 7.6 7.7 75.5 4 0 .15
12/06/1998 11:15 27 22.5 Normal 7.6 < 1 7 79.1 .23
11/01/1998 11:15 26 24 Normal 7.6 < 1 6 69.6 6 .3
10/04/1998 10:45 28.5 28 Normal 7.4 < 1 5.9 73.2 1 0.25 .46
08/30/1998 11:00 28 29 Normal 7.4 < 1 4.4 55.4 8 0
08/16/1998 11:10 29.5 29 Normal 7.6 < 1 5.4 68 2 0.25 .34
07/05/1998 10:30 31 30 High 8.2 < 1 6.3 80.6 3 5
06/07/1998 10:30 27.5 26.5 Normal 8 < 1 5.6 67.8 1 0
05/03/1998 26 24 8 < 1 5.4 62.6 0 .15
04/05/1998 11:00 19.5 20 Normal 8 < 1 7.6 82.1
02/08/1998 11:30 26 17 High 7.5 1 8.5 86.7 2 0.5
01/04/1998 11:45 21.5 17 Normal 8 < 1 8.9 90.8 0 1
12/14/1997 11:15 17 11.5 Normal 7.6 < 1 8.6 77.8 .1
10/12/1997 11:30 30 25.5 High 7.6 < 1 3.8 44.6 1 7
10/12/1997 12:30 28 26.5 High 7.7 < 1 5.1 61.7 1 8
10/07/1997 11:00 20.5 18 6.5 0.5 7.2 53 0
08/03/1997 12:30 33 30 Normal < 1 5.5 70.4 2 0.5 2
07/13/1997 12:10 33.5 30.5 Normal 7.4 < 1 5.7 72.9
06/15/1997 12:05 31 30 Normal 7.3 < 1 8.7 110.7
05/04/1997 11:30 24 24 7.2 < 1 9.3 9
04/06/1997 11:30 27 20 6.6 < 1 7 61 0 .15
02/09/1997 10:50 10 12 7.2 0.01 10 0 1
12/07/1996 11:00 20.5 18 Low 6.5 < 1 7.5 77.7 4 .08
11/10/1996 09:50 27 17 Normal 7.1 < 1 7.8 3 0.5
10/05/1996 11:30 22 23 Normal 7.1 0.25 6.5 74.1 0 0.5
09/08/1996 11:00 26 27 High 7.6 0.5 5.15 0 1.5
09/08/1996 11:00 28 28 7.8 0.5 6.55 0 1.5
08/04/1996 10:50 30 31 Normal 7.8 0.25 5.95 9 0.75 .3
08/04/1996 14:15 33.5 30.5 7.9 0.25 7.1 9 0
05/04/1996 13:50 30 26 7.6 < 1 7.4 88.8 5 1.25 .38
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