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)
05/21/2003 14:00 25 27 No Flow 8.9 < 1 7.3 90.52 1230 30
05/07/2003 14:00 30 29.5 No Flow 9 7.25 93.53 1270 25
04/30/2003 14:00 26 27 No Flow 9 < 1 7.15 88.66 1060 6 0
04/23/2003 14:00 24.5 24 No Flow 9 < 1 8.4 99.12 1100 1 0.1
04/16/2003 14:00 26 25.5 No Flow 8.8 < 1 7 84.7 1300
04/09/2003 14:00 19 20 No Flow 8.7 < 1 8.6 94.6 1270 10 0 .75
04/02/2003 14:00 23 22 No Flow 8.9 < 1 7.8 88.92 1250
03/19/2003 14:00 23 21 No Flow 8.8 < 1 6.6 73.92 1180 7 0.5
02/12/2003 14:00 22 20 No Flow 8.9 < 1 8.85 97.35 1240 4 0.5
02/05/2003 14:00 12 17 No Flow 8.9 < 1 8.9 92.56 1240 12 0
11/14/2002 09:30 19 21 Normal 8.8 < 1 9.2 103.04 1240 9 0 .8
11/14/2002 15:05 23.5 21 Normal 8.9 < 1 9.73 108.92 1190 9 0
05/16/2001 09:15 24.5 29 8.9 < 1 6.5 81.9 1260
05/09/2001 09:15 22 28 8.9 < 1 7.5 93 1260
05/08/2001 09:15 24 28 8.7 < 1 7.2 89.3
05/03/2001 09:15 25 28.5 7 < 1 7.4 92.5 1270
04/25/2001 09:15 21 22 8.8 < 1 7.9 88.5
04/18/2001 09:15 16 21.5 8.5 < 1 7 77.7 1250
04/11/2001 09:15 18.5 19.5 9 < 1 7 74.9 1130
04/04/2001 09:15 23 24.5 8.9 < 1 7.1 83.1 1190
03/29/2001 09:15 13 18 < 1 8.2 85.3 1020
03/21/2001 09:15 19 21 8.9 < 1 8.3 91.3 1160
03/07/2001 09:15 18 20 8.9 < 1 9 97.2 1150
02/28/2001 09:15 10 8 8.6 < 1 5 42 1000
02/21/2001 09:15 12 12 8 < 1 6.1 56.1 1130
02/14/2001 09:15 22 21 8.6 < 1 8.2 90.2 1160
02/07/2001 09:15 18.5 19 8.7 8.1 85.9 1140
01/30/2001 09:15 15 17 8.6 < 1 9 91.8 1130
01/24/2001 09:15 14.5 15 8.6 < 1 9 88.2 900
01/17/2001 09:15 9.5 13 8.5 < 1 8.3 78 1020
12/15/2000 09:15 10 17 9.9 < 1 9.2 93.8 1120
12/08/2000 09:15 12 11 9.7 < 1 8.3 74.7 1090
11/28/2000 09:15 20.5 20.5 9.5 < 1 9.4 102.5 1150
11/20/2000 09:15 17.5 20.5 9.2 < 1 7.3 79.6 1150
11/15/2000 09:15 13 19 9.2 < 1 7.5 79.5 1120
11/09/2000 09:15 16 22 9.2 < 1 8.2 91.8 1170
11/01/2000 09:15 9.5 14 8.4 < 1 10.3 98.9 1110
10/31/2000 09:15 26 28 9.3 < 1 6.5 80.6 1200
10/24/2000 09:15 23 26 9.1 < 1 4.8 57.6 620
10/19/2000 09:15 21 26 9.2 < 1 8 96 720
10/11/2000 09:15 19 22 8.8 < 1 5.6 62.7
10/03/2000 09:15 26 28 9.2 < 1 5.1 63.2
09/27/2000 09:15 22 25 9.1 < 1 5.2 61.4
09/22/2000 09:15 27 31 9.2 < 1 5.9 76.7
09/12/2000 09:15 29 33 9 < 1 4.2 56.3
09/06/2000 09:15 28 33 9.1 < 1 4.5 60.3
08/29/2000 09:15 29 33 9 < 1 5.9 79.1
08/22/2000 09:15 30 34 9.1 < 1 4.8 65.3
08/16/2000 09:15 28 32 9 < 1 5.1 67.3
05/22/2000 09:15 26 27 9 < 1 7.1 86.6 .46
05/09/2000 09:15 26 27 9 < 1 5.8 70.8 .6
05/04/2000 09:15 23 27 9.1 < 1 7 85.4 .75
04/25/2000 09:15 19 22 9 < 1 6.5 72.8 1
04/25/2000 09:15 22 25 9.1 < 1 7.8 91.6
04/11/2000 09:15 22 23 9 < 1 7.3 83.2 1
03/28/2000 09:15 23 25 9 < 1 7.9 93.6 1.2
03/22/2000 09:10 24 21 8.9 < 1 7.5 82.5 0 .6
03/07/2000 09:15 8.4 8.6 9.1 1 8.5 72.7 1.5
02/29/2000 09:15 22 22 9.1 < 1 8 89 .5
02/22/2000 09:15 20 21 9 < 1 8.3 91.7 .75
02/18/2000 09:15 20 21 9 < 1 8.3 91.3 .75
02/08/2000 09:15 17 15 9 < 1 10.3 101.3 .75
01/31/2000 09:10 15 13 8.7 < 1 9.6 89.8 .75
01/25/2000 09:15 15 17 8.8 < 1 9.4 95.9 1.5
01/19/2000 09:15 20 20 9.2 < 1 8 86.4 .7
01/11/2000 09:15 15 16 8.9 < 1 8.5 85
01/04/2000 09:15 9 5 8.7 < 1 7.2 56.2
12/13/1999 09:15 13 17 8.5 < 1 6.2 63.2 1
12/07/1999 09:15 14 18 8.8 7.3 75.9 1.2
12/01/1999 09:15 17 22 8.8 < 1 6.8 76.2 .3
11/23/1999 09:15 23 24 8.8 < 1 6.2 71.9 .3
11/16/1999 09:15 21 25 9 < 1 8 94.4 .23
11/10/1999 09:15 21 24 8.7 < 1 8.1 94 .75
11/03/1999 09:15 17 18 9 < 1 8.3 86.3 1
10/26/1999 09:15 19 24 9 < 1 7.1 82.4 .75
10/19/1999 09:15 46 22 8.8 < 1 6 67.2
10/11/1999 09:15 26 27 9 < 1 7.5 91.5
10/06/1999 09:15 22 25 8.9 < 1 6.3 74.3
09/29/1999 09:15 18 27 8.1 4 48.8
09/22/1999 09:15 21 28 8.5 3.6 44.6 .38
09/15/1999 09:15 26 30 8.5 4.1 51.8 .61
09/08/1999 09:15 26 32 8.5 < 1 3.6 47.5 .61
09/01/1999 09:15 26 31 8.5 < 1 4.8 62.4 2
08/25/1999 09:15 26 32 8.7 < 1 4.1 53.5 2
05/12/1999 10:00 22 25 8.6 < 1 7.9 92.6
05/06/1999 10:00 21 24 9 < 1 7.9 91.1
04/28/1999 10:00 25 27 9 < 1 8 97.6
04/22/1999 10:00 24 26 8.7 < 1 7.8 93
04/19/1999 10:00 23 24 8.8 < 1 8.1 94
02/03/1999 10:50 20 20 8 < 1 9.7 104.8
01/26/1999 10:50 20 19 7.5 < 1 9.3 98.6
01/20/1999 10:50 22 20 7.5 < 1 8.1 86.9
01/13/1999 10:50 20.5 18 7.5 < 1 9.8 101.4
01/07/1999 10:50 21 18 8 < 1 9.8 101.4
12/02/1998 10:50 24 23 8 < 1 8.1 91.8
11/18/1998 10:50 22 21 7.7 < 1 8.9 97.9
11/09/1998 10:50 23 22 8.4 < 1 8.4 93.5
11/04/1998 10:50 19 23 8.4 < 1 8.1 91.8 56
10/28/1998 10:50 26 26 8.3 < 1 9.1 108.6 49
10/26/1998 10:50 26 25 8.2 < 1 9 106.2 47
10/07/1998 10:50 22 23 8.7 < 1 6.8 77 28
09/30/1998 10:50 30 32 8.8 < 1 6.5 85.8 21
09/22/1998 10:50 35 32 8.6 < 1 8 104.9 13
09/15/1998 10:50 27 30 8.5 4.6 58.9 6
09/09/1998 10:50 28 30 8.5 < 1 7 89 0
03/02/1998 10:50 16 13 8.7 < 1 9.3
02/24/1998 10:50 22 20 8.5 < 1 9.85
02/19/1998 10:50 18 14 7.8 < 1 9.95
02/12/1998 10:50 21 15 8.1 < 1 10 1
02/03/1998 10:50 18 16 10.7 < 1 8 .75
01/27/1998 10:50 17 14 10 < 1 7.9 .75
01/21/1998 10:50 20 18 9 < 1 10
01/08/1998 10:50 14 15 8.4 < 1 9.3
12/04/1997 10:50 16 16 8.8 < 1 6.45
11/25/1997 11:05 19 18 7.8 < 1 9
11/14/1997 11:05 20 18 8.6 < 1 8.85
11/07/1997 11:05 17 20 8.5 < 1 8.9 59
10/31/1997 11:05 26 24 8.2 < 1 7.95
10/31/1997 11:05 26 24 8.2 < 1 7.95
10/23/1997 11:05 23 20 7.6 < 1 6.4
09/10/1997 11:05 27 32.5 7.9 < 1 7 93.1 2 0.2
04/23/1997 13:55 26 24 8.3 < 1 9 107
04/10/1997 13:55 26 23 8.4 < 1 8.7 98
03/13/1997 13:55 28 22 8.2 < 1 8.5 1 1.2
02/27/1997 13:55 18 20 8.2 < 1 8.7 1 0.4
02/21/1997 13:55 20 23 8.3 < 1 9.1 1 1.1
12/11/1996 13:55 25 23 8.6 < 1 9.6 110
12/05/1996 13:55 22.5 22 8.5 < 1 11.5 130
11/21/1996 13:50 27 25 8.7 < 1 11.25
11/14/1996 13:50 28 27 8.8 < 1 8.75 110
11/07/1996 13:55 17 23 8.5 < 1 8.75
10/31/1996 14:00 26 24 8.7 < 1 8.7
10/24/1996 14:10 27 26 8.5 < 1 8.25
10/17/1996 13:50 33 30 9 < 1 8.8
10/10/1996 14:00 30 26 8.7 < 1 8.8
10/03/1996 14:10 30 28 8.8 < 1 6.6
09/29/1996 14:00 33 31 8.7 < 1 7.5 100
09/19/1996 14:10 30 31 8.7 < 1 8.3 113
09/11/1996 13:45 33 36 8.6 < 1 8 128
09/05/1996 13:45 32 33 8.9 < 1 7 97
08/28/1996 9:00 18 19 8.6 < 1 8.75 95
02/22/1996 09:00 21 20 Normal 8.5 < 1 7.7 85
02/15/1996 09:00 19 18 8.8 < 1 9.2 97
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