測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 23101 |
八木田川 |
綱取ダム流入前 |
|
測定結果
| 採取年月日 |
1992.04.08 |
1992.05.20 |
1992.06.03 |
1992.07.08 |
1992.08.26 |
1992.09.16 |
1992.10.07 |
1992.11.25 |
1992.12.02 |
1993.01.27 |
1993.02.03 |
1993.03.10 |
| 採取時刻 |
1010 |
1045 |
1010 |
1014 |
1005 |
0950 |
0955 |
0955 |
1004 |
1006 |
1005 |
0945 |
| 天候 |
4 |
2 |
2 |
4 |
2 |
4 |
2 |
雨 |
4 |
4 |
3 |
雪 |
| 気温 (℃) |
4.0 |
22.0 |
23.0 |
26.0 |
24.5 |
16.5 |
15.2 |
9.5 |
10.0 |
3.5 |
3.8 |
4.7 |
| 水温 (℃) |
7.8 |
16.5 |
17.0 |
20.5 |
21.0 |
15.0 |
13.0 |
8.5 |
6.2 |
4.8 |
4.0 |
5.0 |
| pH |
7.9 |
8 |
7.9 |
8.2 |
7.9 |
8.2 |
7.9 |
8 |
8 |
8.2 |
8.2 |
8 |
| DO (mg/l) |
11 |
9.6 |
9.6 |
9.1 |
8.5 |
9.5 |
10 |
11 |
12 |
13 |
13 |
11 |
| BOD (mg/l) |
< 0.5 |
1.6 |
0.8 |
1.3 |
0.6 |
1.1 |
1.2 |
0.7 |
< 0.5 |
1.9 |
0.7 |
0.7 |
| COD (mg/l) |
3.3 |
2.4 |
2.6 |
2.4 |
3.6 |
2 |
1.8 |
1.5 |
1.5 |
1.9 |
1.2 |
1.6 |
| SS (mg/l) |
23 |
8 |
10 |
5 |
72 |
22 |
11 |
7 |
12 |
5 |
1 |
9 |
| 大腸菌群数 (MPN/100ml) |
1.70E+02 |
3.30E+03 |
3.30E+02 |
1.10E+03 |
1.70E+03 |
1.70E+04 |
2.40E+03 |
1.70E+03 |
1.10E+03 |
2.40E+02 |
3.30E+02 |
4.00E+03 |
| 全窒素 (mg/l) |
1.4 |
1.1 |
1.1 |
0.94 |
0.63 |
0.94 |
1 |
0.78 |
0.97 |
0.58 |
0.52 |
1.1 |
| 全燐 (mg/l) |
0.077 |
0.051 |
0.025 |
0.02 |
0.019 |
0.041 |
0.023 |
0.014 |
0.01 |
0.007 |
0.008 |
0.01 |