測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 03853 |
長内川上流 |
ダム放流直後 |
AA |
測定結果
| 採取年月日 |
1992.04.23 |
1992.05.20 |
1992.06.19 |
1992.07.29 |
1992.08.21 |
1992.09.24 |
1992.10.23 |
1992.11.20 |
1992.12.17 |
1993.01.20 |
1993.02.19 |
1993.03.04 |
| 採取時刻 |
0905 |
0900 |
0840 |
0830 |
0900 |
0845 |
0835 |
0835 |
0840 |
0840 |
0850 |
0840 |
| 天候 |
2 |
2 |
4 |
2 |
4 |
4 |
4 |
4 |
4 |
4 |
2 |
2 |
| 気温 (℃) |
13.8 |
23.8 |
16.2 |
29.3 |
20.0 |
21.4 |
10.4 |
12.0 |
3.8 |
2.2 |
5.8 |
5.4 |
| 水温 (℃) |
8.9 |
13.4 |
14.3 |
18.8 |
19.2 |
14.7 |
10.9 |
7.9 |
5.0 |
2.8 |
2.8 |
3.4 |
| pH |
7.9 |
7.5 |
8 |
8 |
7.8 |
7.8 |
7.9 |
7.4 |
7.1 |
7.8 |
7.3 |
7.5 |
| DO (mg/l) |
13 |
11 |
10 |
9.1 |
9.7 |
12 |
12 |
12 |
13 |
14 |
15 |
14 |
| BOD (mg/l) |
< 0.5 |
1 |
1.1 |
< 0.5 |
2.4 |
1 |
< 0.5 |
0.7 |
< 0.5 |
0.7 |
0.7 |
0.8 |
| COD (mg/l) |
1.9 |
1.1 |
1.1 |
1.8 |
1.4 |
1.7 |
1.1 |
2 |
0.8 |
0.8 |
1.4 |
0.9 |
| SS (mg/l) |
3 |
1 |
28 |
3 |
2 |
3 |
1 |
1 |
1 |
6 |
1 |
11 |
| 大腸菌群数 (MPN/100ml) |
2.30E+02 |
3.30E+01 |
4.90E+01 |
7.90E+01 |
1.10E+02 |
3.30E+02 |
1.30E+02 |
3.30E+01 |
8.00E+00 |
1.70E+01 |
4.90E+01 |
5.00E+00 |
| 全窒素 (mg/l) |
0.44 |
0.38 |
0.52 |
0.54 |
0.4 |
0.65 |
0.53 |
0.54 |
0.49 |
0.53 |
0.68 |
0.72 |
| 全燐 (mg/l) |
0.006 |
|
|
0.013 |
|
|
|
0.015 |
|
|
0.006 |
|