測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
01954 |
北上川(4) |
北上川橋 |
A |
測定結果
採取年月日 |
1999.04.14 |
1999.04.28 |
1999.05.12 |
1999.05.19 |
1999.06.02 |
1999.06.16 |
1999.07.07 |
1999.07.21 |
1999.08.03 |
1999.08.03 |
1999.08.03 |
1999.08.03 |
1999.08.18 |
1999.09.03 |
1999.09.14 |
1999.10.06 |
1999.10.20 |
1999.11.10 |
1999.11.17 |
1999.12.01 |
1999.12.15 |
2000.01.12 |
2000.01.19 |
2000.02.02 |
2000.02.16 |
2000.03.01 |
2000.03.13 |
採取時刻 |
1020 |
1120 |
1120 |
1145 |
1125 |
1305 |
1115 |
1300 |
0130 |
0730 |
1330 |
1930 |
1341 |
1158 |
1130 |
0140 |
1145 |
1105 |
1235 |
1045 |
1135 |
1140 |
1110 |
1050 |
1250 |
1100 |
1240 |
天候 |
曇り |
曇り |
晴れ |
雨 |
晴れ |
雨 |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
晴れ |
雨 |
晴れ |
晴れ |
晴れ |
雪 |
晴れ |
晴れ |
曇り |
雪 |
晴れ |
曇り |
気温 (℃) |
13.9 |
18.3 |
17.5 |
15.2 |
25.5 |
22.2 |
20.0 |
26.5 |
24.2 |
26.1 |
30.0 |
28.1 |
32.6 |
28.3 |
26.3 |
22.1 |
10.6 |
11.2 |
4.5 |
7.3 |
-1.9 |
4.8 |
4.1 |
5.7 |
-2.6 |
1.2 |
3.0 |
水温 (℃) |
8.0 |
10.8 |
13.5 |
13.5 |
18.0 |
21.2 |
19.5 |
19.6 |
27.0 |
27.5 |
28.5 |
28.5 |
28.3 |
20.5 |
22.5 |
17.0 |
13.1 |
12.0 |
9.6 |
6.5 |
2.5 |
2.5 |
3.8 |
4.0 |
3.5 |
3.5 |
5.0 |
流量 (m3/s) |
705.24 |
669.63 |
364.25 |
299.96 |
272.39 |
211.26 |
331.32 |
377.32 |
110.83 |
125.59 |
134.89 |
128.65 |
139.66 |
496.28 |
270.16 |
215.22 |
184.52 |
168.29 |
182.68 |
252.59 |
319.08 |
361.66 |
276.90 |
175.41 |
151.13 |
179.03 |
146.16 |
採取水深 (m) |
1.0 |
1.0 |
0.8 |
0.8 |
0.8 |
0.7 |
0.9 |
0.9 |
0.6 |
0.6 |
0.6 |
0.6 |
0.7 |
1.0 |
0.8 |
0.8 |
0.7 |
0.7 |
0.7 |
0.7 |
0.8 |
0.8 |
0.7 |
0.7 |
0.6 |
0.6 |
0.6 |
全水深 (m) |
5.0 |
5.2 |
4.0 |
4.0 |
3.8 |
3.6 |
4.3 |
4.3 |
3.1 |
3.1 |
3.1 |
3.1 |
3.3 |
4.9 |
4.0 |
3.8 |
3.5 |
3.3 |
3.4 |
3.5 |
4.0 |
4.2 |
3.6 |
3.3 |
3.0 |
3.1 |
3.1 |
外観 |
茶色 |
微白濁 |
茶色 |
無色澄明 |
無色澄明 |
茶色 |
無色澄明 |
茶色 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
茶色 |
茶色 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
臭気 |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
pH |
7.2 |
7.2 |
7.3 |
7.2 |
7.3 |
7.4 |
7.6 |
7.3 |
7.6 |
7.5 |
7.8 |
8.0 |
7.7 |
7.3 |
7.5 |
7.5 |
7.4 |
7.6 |
7.4 |
7.4 |
7.2 |
7.3 |
7.0 |
7.5 |
7.7 |
7.4 |
7.7 |
DO (mg/l) |
11.7 |
10.6 |
10.1 |
9.8 |
9.2 |
7.9 |
8.8 |
8.6 |
8.2 |
7.9 |
9.4 |
8.8 |
7.8 |
8.4 |
8.1 |
9.7 |
10.2 |
10.5 |
11.2 |
12.1 |
12.8 |
13.1 |
12.6 |
13.3 |
13.7 |
13.6 |
13.0 |
BOD (mg/l) |
0.9 |
1.5 |
0.9 |
1.1 |
1.1 |
2.4 |
1.1 |
1.2 |
0.7 |
0.7 |
0.9 |
1.4 |
1.0 |
0.9 |
1.0 |
0.7 |
0.9 |
1.2 |
0.8 |
1.1 |
1.4 |
0.9 |
0.8 |
1.0 |
1.6 |
1.8 |
2.0 |
COD (mg/l) |
|
1.1 |
1.7 |
|
1.6 |
|
2.0 |
|
|
|
1.9 |
|
|
|
2.1 |
2.2 |
|
1.8 |
|
2.0 |
|
|
1.0 |
2.1 |
|
2.9 |
|
SS (mg/l) |
30 |
20 |
12 |
9 |
7 |
13 |
11 |
18 |
5 |
5 |
5 |
5 |
8 |
15 |
11 |
3 |
4 |
5 |
6 |
7 |
12 |
19 |
7 |
5 |
4 |
13 |
10 |
大腸菌群数 (MPN/100ml) |
4.9E+02 |
7.9E+03 |
7.9E+02 |
4.9E+03 |
1.1E+03 |
1.7E+03 |
7.9E+03 |
1.3E+04 |
1.1E+03 |
2.3E+03 |
1.4E+03 |
3.3E+03 |
1.3E+04 |
7.9E+04 |
2.4E+04 |
4.9E+03 |
1.1E+03 |
1.3E+03 |
3.3E+03 |
3.3E+03 |
3.3E+03 |
4.9E+03 |
4.9E+02 |
1.1E+03 |
7.9E+02 |
4.9E+02 |
3.3E+02 |
全窒素 (mg/l) |
|
|
0.95 |
|
|
|
0.91 |
|
|
|
|
|
|
|
0.96 |
|
|
0.92 |
|
|
|
|
1.11 |
|
|
1.42 |
|
全燐 (mg/l) |
|
|
0.063 |
|
|
|
0.062 |
|
|
|
|
|
|
|
0.050 |
|
|
0.052 |
|
|
|
|
0.042 |
|
|
0.068 |
|
カドミウム (mg/l) |
< 0.001 |
|
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
|
|
|
|
< 0.001 |
< 0.001 |
|
|
< 0.001 |
|
< 0.001 |
|
< 0.001 |
< 0.001 |
|
|
< 0.001 |
|
< 0.001 |
全シアン (mg/l) |
N |
|
|
N |
|
N |
|
N |
|
|
|
|
N |
N |
|
|
N |
|
N |
|
N |
N |
|
|
N |
|
N |
鉛 (mg/l) |
< 0.005 |
|
|
0.005 |
|
< 0.005 |
|
< 0.005 |
|
|
|
|
< 0.001 |
0.005 |
|
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
< 0.001 |
|
|
< 0.005 |
|
< 0.005 |
六価クロム (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 |
砒素 (mg/l) |
0.002 |
|
|
0.001 |
|
< 0.001 |
|
< 0.001 |
|
|
|
|
0.001 |
< 0.001 |
|
|
< 0.001 |
|
< 0.001 |
|
0.001 |
0.001 |
|
|
0.001 |
|
0.001 |
総水銀 (mg/l) |
< 0.0005 |
|
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
|
|
|
|
< 0.0005 |
< 0.0005 |
|
|
< 0.0005 |
|
< 0.0005 |
|
< 0.0005 |
< 0.0005 |
|
|
< 0.0005 |
|
< 0.0005 |
アルキル水銀 (mg/l) |
N |
|
|
N |
|
N |
|
N |
|
|
|
|
N |
N |
|
|
N |
|
N |
|
N |
N |
|
|
N |
|
N |
PCB (mg/l) |
|
|
|
|
|
|
N |
|
|
|
|
|
|
|
|
|
|
N |
|
|
|
|
|
|
|
|
|
ジクロロメタン (mg/l) |
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
四塩化炭素 (mg/l) |
|
|
|
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
1,2-ジクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0004 |
|
|
|
|
|
|
|
|
|
|
< 0.0004 |
|
|
|
|
|
|
|
|
|
1,1-ジクロロエチレン (mg/l) |
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
シス-1,2-ジクロロエチレン (mg/l) |
|
|
|
|
|
|
< 0.004 |
|
|
|
|
|
|
|
|
|
|
< 0.004 |
|
|
|
|
|
|
|
|
|
1,1,1-トリクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
1,1,2-トリクロロエタン (mg/l) |
|
|
|
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
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 |
|
|
|
|
1,3-ジクロロプロペン (mg/l) |
|
|
< 0.0002 |
|
|
|
|
|
|
|
< 0.0002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
チウラム (mg/l) |
|
|
< 0.0006 |
|
|
|
|
|
|
|
< 0.0006 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
シマジン (mg/l) |
|
|
< 0.0003 |
|
|
|
|
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
チオベンカルブ (mg/l) |
|
|
< 0.002 |
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ベンゼン (mg/l) |
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
セレン (mg/l) |
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
鉄(溶解性) (mg/l) |
|
|
0.3 |
|
|
|
0.1 |
|
|
|
|
|
|
|
0.2 |
|
|
< 0.1 |
|
|
|
|
0.1 |
|
|
0.1 |
|
ふっ素 (mg/l) |
|
|
< 0.1 |
|
|
|
|
< 0.1 |
|
|
|
|
|
< 0.1 |
|
|
|
|
< 0.1 |
|
|
|
< 0.1 |
|
|
< 0.1 |
|
アンモニア性窒素 (mg/l) |
|
|
< 0.1 |
|
|
|
< 0.1 |
|
|
|
|
|
|
|
< 0.1 |
|
|
< 0.1 |
|
|
|
|
< 0.1 |
|
|
|
|
透視度 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
塩化物イオン (mg/l) |
|
|
7 |
|
|
|
8 |
|
|
|
|
|
|
|
8 |
|
|
9 |
|
|
|
|
8 |
|
|
13 |
|
硫酸イオン (mg/l) |
|
|
13 |
|
|
|
13 |
|
|
|
|
|
|
|
18 |
|
|
16 |
|
|
|
|
12 |
|
|
17 |
|
酸度 (mg/l) |
|
|
5 |
|
|
|
3 |
|
|
|
|
|
|
|
4 |
|
|
3 |
|
|
|
|
7 |
|
|
7 |
|
アルカリ度 (mg/l) |
|
|
19 |
|
|
|
29 |
|
|
|
|
|
|
|
30 |
|
|
31 |
|
|
|
|
25 |
|
|
33 |
|
ほう素 (mg/l) |
|
|
< 0.02 |
|
|
|
|
0.02 |
|
|
|
|
|
0.02 |
|
|
|
|
0.03 |
|
|
|
0.02 |
|
|
0.06 |
|
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
|
0.74 |
|
|
|
0.74 |
|
|
|
|
|
|
|
0.67 |
|
|
0.76 |
|
|
|
|
0.70 |
|
|
0.87 |
|