測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 01801 |
北上川（３） |
珊瑚橋 |
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 |
1050 |
1115 |
1130 |
1124 |
1150 |
1750 |
2350 |
0550 |
1110 |
1050 |
1105 |
1100 |
1120 |
1055 |
1135 |
| 天候 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
| 気温 (℃) |
19.0 |
20.2 |
24.2 |
22.9 |
29.9 |
24.1 |
19.0 |
20.1 |
21.1 |
20.8 |
11.6 |
7.8 |
6.9 |
3.5 |
3.7 |
| 水温 (℃) |
10.2 |
16.3 |
18.0 |
17.5 |
20.7 |
20.3 |
19.6 |
19.3 |
16.1 |
15.3 |
8.5 |
6.1 |
4.1 |
2.2 |
2.6 |
| pH |
7.2 |
7.1 |
7.6 |
7.4 |
7.5 |
7.6 |
7.6 |
7.5 |
7.5 |
7.5 |
7.4 |
7.4 |
7.3 |
7.4 |
7.5 |
| DO (mg/l) |
11 |
10 |
10 |
9 |
9.2 |
9.5 |
8.5 |
8.5 |
9.3 |
9.8 |
11 |
12 |
12 |
13 |
13 |
| BOD (mg/l) |
0.7 |
1.3 |
1.2 |
1.1 |
1.2 |
1.1 |
1 |
1.1 |
0.8 |
1 |
1 |
1.2 |
2.1 |
2.4 |
1.5 |
| COD (mg/l) |
2.2 |
3 |
2.6 |
2.1 |
2.1 |
|
|
|
1.9 |
2.6 |
1.6 |
2 |
4 |
2.2 |
2 |
| SS (mg/l) |
7 |
11 |
5 |
11 |
4 |
2 |
3 |
3 |
6 |
6 |
2 |
4 |
25 |
5 |
7 |
| 大腸菌群数 (MPN/100ml) |
7.9E+02 |
7.9E+02 |
2.2E+04 |
1.3E+04 |
1.7E+04 |
4.9E+03 |
7.9E+03 |
7.9E+03 |
7.9E+03 |
1.1E+04 |
7.9E+02 |
1.3E+04 |
4.9E+03 |
4.9E+02 |
2.3E+02 |
| 全窒素 (mg/l) |
|
1.74 |
|
1.06 |
|
|
|
|
1.1 |
|
0.48 |
|
1.3 |
|
1.23 |
| 全燐 (mg/l) |
|
0.111 |
|
0.036 |
|
|
|
|
0.034 |
|
0.028 |
|
0.095 |
|
0.047 |
| 鉄(溶解性) (mg/l) |
|
3.4 |
|
1.3 |
|
|
|
|
1.4 |
|
1.1 |
|
5.3 |
|
2.1 |