Table 2. Rainfall,
pH, alkalinity, and event-mean concentrations of several forms of nitrogen from
sites 1 and 2, Coastal Bend area, south Texas, 1996–98
[in., inches; mg/L, milligrams per liter; CaCO3,
calcium carbonate; --, no data; <, less than laboratory reporting limit]
|
Date |
Rainfall |
pH |
Alkalinity |
Nitrogen, |
Nitrogen, |
Nitrogen, |
Nitrogen, |
Nitrogen, |
Nitrogen, |
|
Site
1 |
|||||||||
|
06/01/96 |
0.70 |
-- |
-- |
0.17 |
<0.01 |
0.30 |
0.37 |
0.31 |
0.54 |
|
06/23/96 |
1.13 |
-- |
-- |
.14 |
<.01 |
.21 |
.20 |
.33 |
.35 |
|
06/24/96 |
.44 |
-- |
-- |
.19 |
<.01 |
.39 |
.42 |
.39 |
.61 |
|
06/25/96 |
4.05 |
-- |
-- |
.07 |
<.01 |
.07 |
.07 |
.09 |
.14 |
|
08/08/96 |
1.08 |
5.7 |
2.8 |
.15 |
<.001 |
.13 |
<.1 |
.01 |
.28 |
|
08/09/96 |
.31 |
-- |
-- |
.22 |
<.001 |
.21 |
.30 |
.30 |
.52 |
|
08/21/96 |
1.12 |
5.4 |
-- |
.11 |
.002 |
.17 |
.17 |
.20 |
.28 |
|
08/24/96 |
1.21 |
5.5 |
-- |
.07 |
<.001 |
.08 |
.14 |
.05 |
.21 |
|
09/10/96 |
.50 |
-- |
-- |
.32 |
.003 |
.38 |
.50 |
.40 |
.82 |
|
09/20/96 |
.56 |
-- |
-- |
.21 |
<.001 |
.23 |
.30 |
.30 |
.51 |
|
11/24/96 |
.79 |
-- |
-- |
.04 |
<.001 |
.16 |
.20 |
.20 |
.24 |
|
12/15/96 |
.68 |
-- |
-- |
.22 |
<.001 |
.30 |
.80 |
.80 |
1.0 |
|
02/12/97 |
.21 |
-- |
-- |
.67 |
<.001 |
.75 |
.80 |
.80 |
1.5 |
|
03/11/97 |
.41 |
6.0 |
2.8 |
.10 |
<.01 |
.18 |
.30 |
.20 |
.40 |
|
05/09/97 |
1.31 |
-- |
-- |
.22 |
<.001 |
.23 |
.16 |
.19 |
.44 |
|
06/22/97 |
4.48 |
-- |
-- |
.10 |
.001 |
.10 |
.04 |
.02 |
.20 |
|
09/21/97 |
.78 |
-- |
-- |
.17 |
.005 |
.17 |
.29 |
.20 |
.46 |
|
10/06/97 |
.25 |
-- |
-- |
.14 |
<.001 |
.09 |
.14 |
.16 |
.28 |
|
10/11/97 |
3.43 |
-- |
-- |
.02 |
<.001 |
.02 |
.08 |
.04 |
.10 |
|
10/18/98 |
5.27 |
-- |
-- |
.24 |
.005 |
.10 |
.10 |
.17 |
.34 |
|
Site
2 |
|||||||||
|
05/11/96 |
.47 |
-- |
-- |
.17 |
<.01 |
.41 |
.50 |
.40 |
.67 |
|
08/09/96 |
.19 |
-- |
-- |
.22 |
<.001 |
.24 |
.30 |
.30 |
.52 |
|
08/21/96 |
.61 |
6.2 |
-- |
.20 |
.002 |
.14 |
.15 |
.17 |
.35 |
|
08/23/96 |
.90 |
-- |
-- |
.06 |
.002 |
.20 |
.40 |
.16 |
.46 |
|
09/20/96 |
1.63 |
-- |
-- |
.07 |
<.001 |
.20 |
.20 |
.30 |
.27 |
|
11/24/96 |
.28 |
-- |
-- |
.11 |
<.001 |
.32 |
.50 |
.50 |
.61 |
|
12/15/96 |
.31 |
-- |
-- |
.14 |
<.001 |
.30 |
.40 |
.30 |
.54 |
|
03/11/97 |
.65 |
7.8 |
9.2 |
.10 |
.01 |
.14 |
.30 |
.30 |
.40 |
|
04/02/97 |
1.73 |
-- |
-- |
.03 |
<.001 |
.06 |
<.1 |
.01 |
.09 |
|
04/03/97 |
3.51 |
-- |
-- |
.03 |
<.001 |
.09 |
.01 |
.01 |
.12 |
|
05/09/97 |
1.03 |
4.9 |
-- |
.17 |
<.001 |
.18 |
.14 |
.13 |
.35 |
|
05/16/97 |
2.02 |
-- |
-- |
.12 |
.002 |
.15 |
.08 |
.08 |
.27 |
|
08/23/97 |
.40 |
-- |
-- |
.45 |
.01 |
.09 |
.45 |
.21 |
.90 |
|
09/22/97 |
2.74 |
-- |
-- |
.06 |
.002 |
.11 |
.13 |
.10 |
.19 |
|
09/24/97 |
1.96 |
-- |
-- |
.10 |
.001 |
.28 |
.28 |
.26 |
.38 |
|
10/11/97 |
5.52 |
-- |
-- |
.04 |
<.001 |
.01 |
.14 |
.12 |
.18 |
|
02/14/98 |
1.54 |
-- |
-- |
.14 |
.002 |
.30 |
.38 |
.34 |
.52 |
|
09/23/98 |
1.50 |
5.2 |
-- |
.07 |
.001 |
.05 |
.09 |
.01 |
.16 |
|
10/18/98 |
2.21 |
6.0 |
-- |
.06 |
.001 |
.05 |
.09 |
.04 |
.15 |