測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
01701 |
北上川(2) |
南大橋 |
A |
測定結果
採取年月日 |
1990.04.30 |
1990.05.09 |
1990.06.06 |
1990.07.30 |
1990.08.07 |
1990.08.07 |
1990.08.07 |
1990.08.08 |
1990.09.05 |
1990.10.03 |
1990.11.21 |
1990.12.05 |
1991.01.09 |
1991.02.06 |
1991.03.01 |
採取時刻 |
1350 |
1410 |
1338 |
1420 |
1000 |
1600 |
2200 |
0400 |
1410 |
1335 |
1405 |
1345 |
1420 |
1350 |
1410 |
天候 |
晴れ |
晴れ |
曇り |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
雪 |
晴れ |
気温 (℃) |
13.5 |
20.5 |
23 |
32 |
29 |
27.2 |
25 |
22 |
23.8 |
21.2 |
5.2 |
10.2 |
2.8 |
0 |
0.3 |
水温 (℃) |
11 |
14.5 |
18.8 |
22 |
24 |
26 |
23.5 |
22.5 |
23.1 |
16 |
7 |
7.3 |
3.1 |
2.5 |
2.7 |
流量 (m3/s) |
170.3 |
134.8 |
76.4 |
123.0 |
41.5 |
45.7 |
78.5 |
42.5 |
68.2 |
60.5 |
173.4 |
108.5 |
78.5 |
30.0 |
113.5 |
pH |
7.2 |
7.4 |
7.5 |
7.4 |
7.5 |
7.5 |
7.3 |
7.4 |
7.7 |
7.4 |
7.3 |
7.1 |
7.4 |
7.4 |
7.4 |
DO (mg/l) |
11.1 |
10.7 |
9.7 |
8.7 |
8.6 |
8.6 |
6.8 |
7.1 |
8.9 |
8.9 |
11.5 |
11.6 |
12.8 |
13 |
13.1 |
BOD (mg/l) |
1.2 |
1.2 |
1.5 |
1.7 |
0.8 |
1.1 |
1.6 |
1.2 |
0.9 |
0.7 |
0.8 |
< 0.5 |
0.6 |
0.9 |
1.6 |
COD (mg/l) |
2.2 |
1.8 |
1.4 |
2.5 |
1.2 |
|
|
|
2.1 |
1.4 |
1.6 |
1.9 |
1.6 |
1.8 |
1.6 |
SS (mg/l) |
11 |
5 |
5 |
27 |
2 |
4 |
16 |
7 |
5 |
18 |
10 |
14 |
10 |
9 |
8 |
大腸菌群数 (MPN/100ml) |
7.9E+02 |
2.2E+03 |
7.9E+03 |
2.4E+04 |
4.9E+04 |
2.8E+05 |
1.7E+04 |
3.5E+05 |
1.1E+04 |
2.4E+04 |
3.3E+03 |
1.3E+03 |
4.9E+02 |
1.7E+03 |
1.1E+03 |
全窒素 (mg/l) |
|
0.6 |
|
1.16 |
|
|
|
|
0.76 |
|
0.67 |
|
0.87 |
|
0.61 |
全燐 (mg/l) |
|
0.021 |
|
0.033 |
|
|
|
|
0.018 |
|
0.019 |
|
0.025 |
|
0.018 |
砒素 (mg/l) |
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
|
|
|
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
< 0.02 |
トリクロロエチレン (mg/l) |
|
< 0.002 |
|
< 0.002 |
|
|
|
|
|
|
< 0.002 |
|
< 0.002 |
|
|
テトラクロロエチレン (mg/l) |
|
< 0.0005 |
|
< 0.0005 |
|
|
|
|
|
|
< 0.0005 |
|
< 0.0005 |
|
|
鉄(溶解性) (mg/l) |
|
0.09 |
|
0.21 |
|
|
|
|
0.08 |
|
0.09 |
|
0.09 |
|
0.06 |