測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 02601 |
和賀川下流 |
九年橋 |
A |
測定結果
| 採取年月日 |
1991.04.26 |
1991.05.08 |
1991.06.05 |
1991.07.30 |
1991.08.14 |
1991.08.14 |
1991.08.14 |
1991.08.15 |
1991.09.18 |
1991.10.02 |
1991.11.06 |
1991.12.04 |
1992.01.08 |
1992.02.05 |
1992.03.04 |
| 採取時刻 |
1105 |
1130 |
1145 |
1135 |
1030 |
1630 |
2230 |
0430 |
1125 |
1100 |
1115 |
1110 |
1135 |
1105 |
1145 |
| 天候 |
晴れ |
晴れ |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
| 気温 (℃) |
18.0 |
21.0 |
25.0 |
22.5 |
29.5 |
29.2 |
20.4 |
19.6 |
19.6 |
20.5 |
11.3 |
7.6 |
5.6 |
2.2 |
3.5 |
| 水温 (℃) |
8.9 |
12.2 |
17.5 |
16.5 |
19.9 |
24.5 |
19.2 |
18.4 |
16.5 |
15.8 |
9.5 |
5.7 |
3.2 |
2.4 |
1.8 |
| pH |
6.9 |
7.1 |
7.5 |
7.2 |
7.5 |
7.7 |
7.2 |
7.2 |
7.4 |
7.6 |
7.2 |
7.2 |
7.2 |
7.1 |
7.1 |
| DO (mg/l) |
11 |
11 |
10 |
9.5 |
10 |
9.1 |
8.8 |
8.8 |
9.9 |
10 |
12 |
13 |
14 |
14 |
14 |
| BOD (mg/l) |
< 0.5 |
0.7 |
1.3 |
1.1 |
1 |
0.9 |
1 |
0.9 |
1.2 |
1.1 |
0.9 |
1.1 |
1.1 |
1.8 |
0.6 |
| COD (mg/l) |
2 |
1.6 |
2.2 |
1.9 |
1.4 |
|
|
|
3.3 |
2.6 |
1.3 |
1.6 |
2.4 |
1.2 |
3.1 |
| SS (mg/l) |
11 |
8 |
3 |
6 |
2 |
1 |
3 |
2 |
46 |
4 |
1 |
3 |
27 |
3 |
2 |
| 大腸菌群数 (MPN/100ml) |
2.0E+01 |
1.3E+02 |
7.9E+02 |
4.9E+03 |
2.2E+03 |
1.3E+03 |
2.8E+02 |
1.3E+03 |
2.8E+03 |
3.3E+03 |
2.3E+02 |
3.3E+02 |
4.9E+02 |
8.0E+01 |
4.9E+02 |
| 全窒素 (mg/l) |
|
0.53 |
|
0.4 |
|
|
|
|
0.69 |
|
0.44 |
|
0.35 |
|
0.57 |
| 全燐 (mg/l) |
|
0.08 |
|
0.046 |
|
|
|
|
0.066 |
|
0.048 |
|
0.075 |
|
0.034 |