測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 50651 |
綱取ダム貯水池 |
Ｌ‐１３ |
A |
測定結果
| 採取年月日 |
1991.05.13 |
1991.05.13 |
1991.06.03 |
1991.06.03 |
1991.07.01 |
1991.07.01 |
1991.08.05 |
1991.08.05 |
1991.09.02 |
1991.09.02 |
1991.10.07 |
1991.10.07 |
| 採取時刻 |
1030 |
1055 |
0955 |
1025 |
1020 |
1036 |
1025 |
1045 |
1015 |
1035 |
1035 |
1050 |
| 天候 |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
晴れ |
晴れ |
雨 |
雨 |
| 気温 (℃) |
20.8 |
20.8 |
21.6 |
21.6 |
22.2 |
22.2 |
22.4 |
22.4 |
27.0 |
27.0 |
18.4 |
18.4 |
| 水温 (℃) |
17.1 |
5.3 |
19.3 |
5.9 |
20.9 |
6.0 |
18.7 |
13.2 |
24.5 |
14.2 |
15.8 |
13.7 |
| 採取水深 (m) |
0.0 |
9.0 |
0.0 |
10.3 |
0.0 |
8.0 |
0.0 |
8.0 |
0.0 |
8.0 |
0.0 |
8.0 |
| 全水深 (m) |
10.0 |
10.0 |
11.3 |
11.3 |
10.0 |
10.0 |
9.4 |
9.4 |
9.5 |
9.5 |
8.2 |
8.2 |
| 透明度 (m) |
3.200 |
|
4.000 |
|
2.000 |
|
0.500 |
|
0.800 |
|
3.500 |
|
| pH |
7.1 |
7 |
7.7 |
6.9 |
7.3 |
6.8 |
7.3 |
7.3 |
7.3 |
7.2 |
6.9 |
6.9 |
| DO (mg/l) |
10 |
8.3 |
10 |
4.9 |
10 |
3.2 |
12 |
11 |
10 |
5.1 |
10 |
9.4 |
| BOD (mg/l) |
2.4 |
0.6 |
1.2 |
0.7 |
1.5 |
1.4 |
4.3 |
1 |
1.5 |
0.9 |
1.2 |
0.8 |
| COD (mg/l) |
1.8 |
1.7 |
1.6 |
1.1 |
2.3 |
2.3 |
3.8 |
2.4 |
1.9 |
1.4 |
2.2 |
2.7 |
| SS (mg/l) |
2 |
2 |
3 |
3 |
2 |
3 |
17 |
6 |
7 |
6 |
< 1 |
2 |
| 大腸菌群数 (MPN/100ml) |
4.0E+00 |
1.3E+01 |
2.3E+01 |
2.3E+01 |
7.9E+01 |
4.9E+01 |
1.3E+02 |
1.3E+02 |
1.7E+02 |
1.7E+02 |
7.0E+01 |
1.7E+02 |
| 全窒素 (mg/l) |
0.464 |
0.504 |
0.58 |
1.02 |
0.524 |
1.08 |
0.874 |
0.874 |
0.9 |
1.14 |
0.402 |
0.41 |
| 全燐 (mg/l) |
0.016 |
0.01 |
0.012 |
0.011 |
0.034 |
0.012 |
0.043 |
0.017 |
0.044 |
0.031 |
0.013 |
0.02 |