測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
50101 |
湯田ダム貯水池 |
L‐9(ダムサイト) |
A |
測定結果
採取年月日 |
1989.05.17 |
1989.05.17 |
1989.05.17 |
1989.07.19 |
1989.07.19 |
1989.07.19 |
1989.09.27 |
1989.09.27 |
1989.09.27 |
1989.11.15 |
1989.11.15 |
1989.11.15 |
1990.01.17 |
1990.03.07 |
採取時刻 |
1040 |
1040 |
1040 |
1020 |
1020 |
1020 |
0915 |
0915 |
0915 |
1130 |
1130 |
1130 |
1040 |
0930 |
天候 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
気温 (℃) |
19.8 |
19.8 |
19.8 |
22.2 |
22.2 |
22.2 |
13.5 |
13.5 |
13.5 |
6.2 |
6.2 |
6.2 |
-3.8 |
-2 |
水温 (℃) |
10.4 |
9.4 |
7 |
20.5 |
8.4 |
7 |
15.1 |
13.8 |
7.8 |
10.7 |
10.4 |
8.7 |
1.1 |
3.9 |
流量 (m3/s) |
33.1 |
|
|
7.6 |
|
|
20.1 |
|
|
17.5 |
|
|
20.1 |
28.2 |
採取水深 (m) |
0.5 |
30 |
61 |
0.5 |
25 |
48.4 |
0.5 |
25 |
47 |
0.5 |
25 |
52.3 |
0.5 |
0.5 |
全水深 (m) |
62.5 |
62.5 |
62.5 |
49.4 |
49.4 |
49.4 |
48.0 |
48.0 |
48.0 |
53.3 |
53.3 |
53.3 |
|
|
pH |
7.1 |
7 |
6.9 |
7.2 |
7 |
6.7 |
7.1 |
7.1 |
6.6 |
7.1 |
7.1 |
6.7 |
7 |
6.8 |
DO (mg/l) |
10.7 |
9.8 |
9.6 |
8.9 |
7.6 |
5.5 |
9.2 |
8.6 |
2.2 |
10.4 |
10.3 |
1.6 |
13.2 |
12.3 |
BOD (mg/l) |
1.2 |
0.7 |
0.5 |
1.1 |
0.5 |
0.5 |
0.9 |
0.5 |
< 0.5 |
1.1 |
1 |
1.3 |
0.9 |
1.3 |
COD (mg/l) |
1.7 |
1.6 |
1.6 |
2.8 |
1.6 |
2 |
2.6 |
2.3 |
2.8 |
1.9 |
1.8 |
2.7 |
1.6 |
2.7 |
SS (mg/l) |
2 |
2 |
4 |
2 |
2 |
10 |
7 |
10 |
49 |
2 |
3 |
21 |
1 |
12 |
大腸菌群数 (MPN/100ml) |
2.0E+00 |
2.0E+00 |
5.0E+00 |
2.3E+01 |
2.0E+00 |
2.0E+00 |
7.9E+01 |
4.9E+02 |
2.4E+02 |
1.1E+02 |
4.9E+01 |
8.0E+00 |
8.0E+00 |
1.3E+01 |
全窒素 (mg/l) |
0.46 |
|
|
0.38 |
|
|
0.3 |
|
|
0.23 |
|
|
0.32 |
0.33 |
全燐 (mg/l) |
0.014 |
|
|
0.15 |
|
|
0.023 |
|
|
0.011 |
|
|
0.008 |
0.01 |
カドミウム (mg/l) |
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
< 0.005 |
全シアン (mg/l) |
N |
|
|
N |
|
|
N |
|
|
N |
|
|
N |
N |
|
N |
|
|
N |
|
|
N |
|
|
N |
|
|
N |
N |
鉛 (mg/l) |
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
< 0.05 |
六価クロム (mg/l) |
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
< 0.02 |
砒素 (mg/l) |
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
< 0.02 |
総水銀 (mg/l) |
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
< 0.0005 |