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)
03/10/2011 14:00 22 15 8.1 9.2 92 7 0.05
02/05/2011 17:00 18 14 7.9 10.3 100.94 360 152 1
12/06/2010 18:00 9 15 8.2 9.3 93 440 34 0
11/02/2010 16:00 14 21 8.3 8 89.6 410 55 0.1
10/18/2010 15:10 19 19 7.6 7.4 79.92 500 36 0
10/09/2010 17:45 26.5 25 7.9 7.2 86.4 440 32 0
09/06/2010 16:10 32 29 7 6.6 84.48 410 3 1.5
08/08/2010 18:30 35 32 7.8 7 93.8 460 5 0
07/08/2010 15:50 27 30 8 7.2 93.6 440 10 0.5
06/03/2010 14:30 23.5 27 7.5 9 111.6 450 1 0.5
05/05/2010 19:30 33 24 7.8 8.3 97.94 480 19 0
04/07/2010 10:00 22 19 8.5 < 1 9.3 100.44 470 19 0
03/07/2010 14:15 8 9 8.3 9.4 82.72 460 3 1
02/07/2010 10:40 9 9.5 8 10 89 400 26 1
01/05/2010 13:00 11 12 8.4 11.2 105.28 490 74 0
12/12/2009 14:00 15 14 7 9.4 92.12 400 56 0
10/15/2009 19:30 24 1 4 1
09/09/2009 18:00 32 28 8.3 8.4 105.84 460 37 0
08/04/2009 17:00 37 33 8.1 9 122.4 460 6 0
07/08/2009 18:30 37 33 8.7 6.65 90.44 440 6 0
05/04/2009 19:00 26 25 8.8 9 108 460 6 0.08
04/06/2009 14:00 16 15 7.3 8.9 89 420 5 0
03/07/2009 16:30 25 19 8.8 10 460 99 0
02/09/2009 14:30 22 18 8.8 13 440 178 0.33
01/03/2009 16:00 28 19 1 8.5 10 108 420 139 0
12/07/2008 14:30 20 17 8.5 10 104 490 112 0
11/11/2008 17:30 23 24 8.2 7.5 88.5 440 86 0
10/06/2008 13:00 29 25 8.4 7.2 86.4 430 51 0
09/15/2008 11:10 22 25 8.2 5.1 61.2 460 30 0
08/04/2008 14:25 37 33 8.5 6.8 92.48 440 12 0 399.7
07/05/2008 16:30 35 28 8 8.2 103.32 420 64 0
06/11/2008 19:00 34 28 7.8 6.2 78.12 420 40 0
05/05/2008 14:40 22 21.5 8.4 8.6 97.18 410 11 0.2
03/03/2008 09:30 8 14 8.2 8.3 81.34 370 113 0.25
02/03/2008 13:30 25 18 8.2 12.9 136.74 400 82 0
01/09/2008 10:30 10 14 8 9.7 95.06 400 50 0
12/02/2007 15:30 24 30 1 8.7 8.1 105.3 410 12 0
11/06/2007 10:10 14 20 8.4 7.2 79.2 390 62 0
10/06/2007 12:15 27.5 28 8.4 7.8 98.28 420 30 0
09/03/2007 14:30 27.5 28 8.1 8.6 108.36 410 1 0.5
08/09/2007 08:30 25 28 1 8.2 8.5 107.1 390 20 0
07/08/2007 16:00 29 30 8.1 7.1 92.3 420 3 2.5
06/19/2007 14:00 33 34 8.2 11.1 153.18 440 5 0
05/02/2007 16:20 24 24 1 7.9 9.9 116.82 460 1 1.5
04/09/2007 15:15 17 18.5 1 7.8 9.3 99.51 470 3 0.3
03/04/2007 12:15 490 13 1 8.2 10.1 96.96 45 0
02/04/2007 15:05 18 15 1 8.2 11.1 111 500 15 0
01/12/2007 15:00 20 16 1 7.7 10.2 104.04 450 1 20
12/06/2006 16:10 21 18 1 8 9.8 103.88 45 0
10/09/2006 10:15 22 25 1 7.8 7.9 94.8 470 25 0
09/03/2006 19:30 29 28 No Flow 7.8 8.1 102.06 460 5 0
08/05/2006 13:00 33 30 No Flow 8.5 8.1 105.3 470 33 0 10
07/04/2006 15:30 34 30 No Flow 8.3 7.6 98.8 450 10 0 20
06/04/2006 17:00 34 30 Flood 8.1 7.2 93.6 430 3 0.75 30
05/07/2006 14:30 25 27 No Flow 8.1 9.75 120.9 340 1 2 30
04/09/2006 17:00 26 25 No Flow 8.2 10.3 123.6 4 0 10
03/06/2006 10:15 20 17 No Flow 8.2 10 104 420 36 0 50
02/05/2006 16:00 26 27 No Flow 8 10 124 460 7 60
01/03/2006 16:00 29 19 No Flow 8.1 9.6 103.68 440 28 70
12/12/2005 16:30 19.5 18 No Flow 8.1 480 6 > 1.22
11/11/2005 11:15 23 22 8 7.8 88.92 420
10/01/2005 17:00 33 30 No Flow 8.3 7.1 92.3 420 21 0
09/10/2005 19:00 34 36 No Flow 8.2 7.7 109.34 410 29 0 30
08/06/2005 17:30 33 33.5 No Flow 8 8.9 121.93 380 1 2
07/08/2005 10:50 29 29.5 No Flow 8 7.5 96.75 410 0.37 0.25
06/07/2005 07:15 25 27 No Flow 8.2 6.3 78.12 400 9 0 60
05/01/2005 15:30 27 24 No Flow 7.1 9.9 116.82 420 37 0.05 140
04/01/2005 12:30 20 18 No Flow 7.6 11.3 119.78 410 7 0
03/09/2005 18:00 20 15 No Flow 7.1 10.3 103 370 3 0.33 10
02/06/2005 16:00 17 15.5 No Flow 8 11.5 116.15 390 3 0.5 20
01/04/2005 17:30 22.5 18 No Flow 8.3 9.9 104.94 360 1 0.25
11/15/2004 17:30 17.5 20.5 No Flow 7.8 7.4 82.14 430 1 1.92 60
09/06/2004 18:00 26 28 No Flow 8.1 < 1 7 88.2 420 15 0.1
08/06/2004 17:00 34 32 No Flow 8 < 1 6.85 91.79 420 11 0 2
07/06/2004 20:00 30 28 No Flow 7.6 < 1 7.4 93.24 480 6 0
06/09/2004 16:20 26 25.5 No Flow 8 < 1 7.3 88.33 450 1 2.5 3 10
05/09/2004 17:00 28.5 23 No Flow 7.1 < 1 8.5 98.6 440 8 0 2 10
04/03/2004 21:00 19 20 No Flow 8.6 < 1 8.85 97.35 410 12 0.25 2
03/07/2004 16:30 22 16 No Flow 8.2 < 1 9 91.8 400 4 0 2.5 10
02/10/2004 17:00 7 12 No Flow 8 < 1 9.7 91.18 430 1 1 1.5
01/07/2004 17:30 12 14 No Flow 8 < 1 9.3 91.14 440 26 0 .61
12/06/2003 09:00 15 18 No Flow 7.7 < 1 8.4 89.04 430 18 0 2.5
11/06/2003 17:15 10 22 No Flow 7.8 < 1 7.1 80.94 450 28 30
10/02/2003 18:15 25 26 No Flow 8 < 1 6.7 81.74 420 10 0 2.5
09/11/2003 12:00 29 28.5 No Flow 8.6 < 1 7.5 95.25 485 1 0.25 2
08/04/2003 19:00 35 28 No Flow 8.2 < 1 6.5 81.9 330 22 0 2
07/10/2003 09:50 27 28 No Flow 8.2 < 1 6.1 76.86 430 3 0.2 1 50
06/03/2003 16:35 33 30 No Flow 7.9 < 1 430 22 0 20
05/06/2003 18:30 26 25 No Flow 8.5 < 1 8.8 105.6 440 0 0.2
04/22/2003 09:30 17.5 18 No Flow 7.8 < 1 8.15 86.39 450 0 0.02
04/09/2003 11:45 15 14 No Flow 7.8 < 1 8.6 84.28 20 0
03/07/2003 14:10 25 15 No Flow 7.8 < 1 9.65 96.5 380 3 0.75
02/09/2003 17:10 18 12 8.8 < 1 9.85 92.59 430 1 0.25
01/09/2003 18:00 19 14 No Flow 8 < 1 9 88.2 450 12 0 10
12/07/2002 16:00 22 19 No Flow 7.6 < 1 6.3 68.04 230 3 0
11/05/2002 12:30 22 19 No Flow 7.6 < 1 6.3 68.04 1 3 110
10/18/2002 10:15 19.5 22 No Flow 7.7 < 1 6 68.4 3 0
10/08/2002 11:30 22.5 24.5 7.9 6.1 72.59 230 0 0.2
09/03/2002 17:30 34 30 8.5 < 1 7.2 93.6 360 0 0
08/06/2002 17:50 34 31 7.7 < 1 7.1 92.3 530 3 0.33 280
07/08/2002 19:00 34 29.5 8.2 < 1 6 76.2 430 2 0.5 500
06/01/2002 13:00 29.5 27 8.3 < 1 450 4 0 10
04/18/2002 10:00 23 21 8.3 < 1 8.3 91.3 410 11 0
03/02/2002 14:45 6 12 7 < 1 11.9 109.5 390 0 0.03
02/13/2002 17:20 15 12 7.1 < 1 9.5 87.4 400 8 0
01/02/2002 16:30 5 11.5 7.7 < 1 13.9 126.5 410 3 0.1 10
12/13/2001 17:00 12 15 8.2 7.7 75.5 680 0 2.5
11/06/2001 12:30 22.5 23 8.2 < 1 8.1 92.3 440 0
10/16/2001 17:45 19 22 7.2 < 1 7.5 84 460 4 0 10
09/10/2001 18:00 27 27 8.5 < 1 6.5 79.3 450 1 0.2 20
08/13/2001 14:30 27 30 7.1 1 6.5 83.2 460 1 0.1
07/09/2001 18:00 32 30 8.5 < 1 7.3 93.4 420 8 0
06/10/2001 18:00 31 27 7.1 < 1 7.1 86.6 2 0.2 20
05/08/2001 18:20 25 24 7.1 < 1 8.3 96.3 490 2 0.75
04/18/2001 14:45 19 18 7.2 < 1 9.1 94.6 500 1 0.335
04/08/2001 18:30 25 20 8.4 < 0.01 9.2 99.4 490 9 0
02/14/2001 18:00 13 14 7.2 11.9 114.2 480 0.9
02/08/2001 15:30 19 15 8.2 11.2 109.8 640 0 0.01
01/07/2001 15:30 15 12 8.2 < 1 9.4 86.5 450 0 0.01 10
12/18/2000 16:30 13 11.5 8.2 < 1 11.5 104.7 500 3 0
11/13/2000 09:45 6 14 8.1 < 1 8 76.8 610 1 0.25
10/11/2000 09:30 14 23 8 < 1 6.7 76.4 570 1 0.75
09/11/2000 14:00 37 30 8.2 < 0.01 6 76.8 550 2 0.08
08/09/2000 11:00 34 28.5 8.7 < 1 6 75 9 0.75
07/12/2000 17:00 36 30 8.9 < 1 5.9 75.5 24 0
06/12/2000 17:00 36 27 8.8 8.8 107.4 1 4.5
05/10/2000 09:30 24 24.5 8.4 < 1 6.9 80.1 1 0.1
04/18/2000 10:00 21 20.5 8.6 1 9 98.1 7 0
04/09/2000 18:00 18 16 8.5 < 1 8.4 84 2 0.8
03/07/2000 17:00 23.5 17.5 8.2 < 1 8 82.4 10 0
01/12/2000 10:00 20 14 8 < 1 9 86.4 6 0
12/11/1999 10:00 12 16 7.3 < 1 8.2 82 0 0.1
10/06/1999 18:30 26.5 25 8.2 < 1 6.9 81.1 30 0 266.4
09/08/1999 08:00 25 28 8 < 1 6.1 75.6 2 0
08/10/1999 10:00 34 30 Normal 7.1 < 1 5.9 74.9 8 0
07/07/1999 10:30 25 28 Normal 7.4 < 1 5.9 73.2 1 0.42
06/22/1999 09:00 26 26.5 8.4 < 1 5.2 62.9
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