測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
01901 |
北上川(4) |
千歳橋(狐禅寺) |
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 |
0940 |
1020 |
1005 |
1105 |
1000 |
1124 |
1000 |
1143 |
0025 |
0625 |
1225 |
1825 |
1158 |
1124 |
1015 |
0940 |
1114 |
1000 |
1110 |
0940 |
1055 |
1100 |
0955 |
0945 |
1120 |
0955 |
1115 |
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 |
雪 |
晴れ |
雪 |
晴れ |
晴れ |
曇り |
雪 |
曇り |
雪 |
気温 (℃) |
12.5 |
20.0 |
18.5 |
16.1 |
23.4 |
23.4 |
18.4 |
25.2 |
25.2 |
24.6 |
34.0 |
30.3 |
32.3 |
27.1 |
25.3 |
17.2 |
10.9 |
11.0 |
6.2 |
7.3 |
-2.8 |
2.5 |
-0.5 |
5.2 |
-4.1 |
-0.1 |
1.8 |
水温 (℃) |
8.0 |
11.0 |
12.5 |
13.0 |
17.0 |
20.5 |
18.8 |
20.5 |
28.0 |
27.5 |
28.5 |
27.5 |
28.5 |
20.6 |
22.0 |
16.0 |
12.6 |
11.0 |
8.6 |
5.5 |
2.5 |
2.1 |
3.0 |
3.0 |
2.8 |
4.0 |
5.5 |
流量 (m3/s) |
656.28 |
600.63 |
333.94 |
252.27 |
252.27 |
193.74 |
283.00 |
324.65 |
105.00 |
127.06 |
128.99 |
115.77 |
125.14 |
444.88 |
241.54 |
196.13 |
153.31 |
147.04 |
159.72 |
246.88 |
283.00 |
333.94 |
257.73 |
155.44 |
142.92 |
168.47 |
130.94 |
採取水深 (m) |
0.8 |
0.7 |
0.5 |
0.5 |
0.5 |
0.4 |
0.6 |
0.6 |
0.7 |
0.4 |
0.4 |
0.4 |
0.5 |
0.7 |
0.5 |
0.5 |
0.4 |
0.4 |
0.3 |
0.5 |
0.5 |
0.3 |
0.5 |
0.4 |
0.3 |
0.4 |
0.3 |
全水深 (m) |
4.0 |
3.6 |
2.7 |
2.5 |
2.5 |
2.2 |
2.8 |
3.0 |
3.4 |
1.9 |
1.9 |
1.9 |
2.4 |
3.5 |
2.6 |
2.4 |
2.0 |
2.0 |
1.8 |
2.3 |
2.5 |
1.4 |
2.6 |
2.0 |
1.6 |
2.0 |
1.6 |
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 |
微白濁 |
無色澄明 |
無色澄明 |
無色澄明 |
微白濁 |
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 |
7.1 |
7.1 |
7.3 |
7.3 |
7.3 |
7.3 |
7.5 |
7.3 |
7.6 |
7.4 |
7.5 |
7.9 |
7.5 |
7.3 |
7.4 |
7.4 |
7.3 |
7.4 |
7.3 |
7.4 |
7.2 |
7.4 |
7.0 |
7.3 |
7.5 |
7.5 |
7.6 |
DO (mg/l) |
11.7 |
10.6 |
10.1 |
9.9 |
9.4 |
7.9 |
8.9 |
8.8 |
8.4 |
7.4 |
8.3 |
9.3 |
8.3 |
8.7 |
8.2 |
9.5 |
10.2 |
10.7 |
11.2 |
12.4 |
12.9 |
13.1 |
12.6 |
13.0 |
13.7 |
13.2 |
12.9 |
BOD (mg/l) |
0.7 |
1.2 |
0.8 |
1.3 |
0.9 |
2.4 |
0.9 |
1.3 |
0.6 |
0.6 |
0.9 |
1.2 |
1.1 |
0.9 |
1.1 |
0.6 |
0.9 |
1.3 |
1.1 |
1.0 |
1.6 |
0.8 |
0.9 |
1.0 |
1.4 |
1.8 |
1.8 |
COD (mg/l) |
|
1.3 |
2.0 |
|
1.5 |
|
2.0 |
|
|
|
2.1 |
|
|
|
2.3 |
2.5 |
|
1.7 |
|
2.4 |
|
|
1.6 |
2.1 |
|
2.4 |
|
SS (mg/l) |
37 |
18 |
15 |
8 |
5 |
14 |
9 |
12 |
4 |
5 |
5 |
4 |
11 |
15 |
8 |
3 |
3 |
3 |
5 |
9 |
9 |
7 |
5 |
3 |
5 |
9 |
6 |
大腸菌群数 (MPN/100ml) |
1.7E+03 |
1.3E+04 |
2.4E+03 |
4.9E+03 |
3.3E+02 |
3.3E+03 |
1.7E+03 |
7.0E+04 |
3.3E+03 |
7.0E+03 |
1.1E+03 |
3.3E+03 |
1.1E+04 |
1.1E+04 |
7.9E+03 |
4.9E+03 |
1.7E+03 |
1.1E+03 |
1.3E+04 |
1.1E+04 |
3.3E+03 |
7.9E+03 |
4.9E+03 |
3.3E+03 |
7.9E+02 |
7.9E+02 |
4.9E+02 |
全窒素 (mg/l) |
|
|
0.94 |
|
|
|
0.84 |
|
|
|
|
|
|
|
0.91 |
|
|
0.78 |
|
|
|
|
0.98 |
|
|
1.22 |
|
全燐 (mg/l) |
|
|
0.065 |
|
|
|
0.061 |
|
|
|
|
|
|
|
0.054 |
|
|
0.058 |
|
|
|
|
0.042 |
|
|
0.085 |
|
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 |
|
|
|
|
< 0.005 |
< 0.005 |
|
|
< 0.005 |
|
< 0.005 |
|
< 0.005 |
< 0.005 |
|
|
< 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 |
|
|
|
|
|
|
|
|
|
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) |
|
|
0.2 |
|
|
|
0.1 |
|
|
|
|
|
|
|
0.1 |
|
|
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 |
|
|
|
|
|
|
|
7 |
|
|
8 |
|
|
|
|
8 |
|
|
13 |
|
硫酸イオン (mg/l) |
|
|
12 |
|
|
|
13 |
|
|
|
|
|
|
|
17 |
|
|
16 |
|
|
|
|
12 |
|
|
20 |
|
酸度 (mg/l) |
|
|
5 |
|
|
|
3 |
|
|
|
|
|
|
|
4 |
|
|
3 |
|
|
|
|
8 |
|
|
5 |
|
アルカリ度 (mg/l) |
|
|
18 |
|
|
|
27 |
|
|
|
|
|
|
|
28 |
|
|
27 |
|
|
|
|
25 |
|
|
29 |
|
ほう素 (mg/l) |
|
|
< 0.02 |
|
|
|
|
0.02 |
|
|
|
|
|
0.03 |
|
|
|
|
0.03 |
|
|
|
0.03 |
|
|
0.08 |
|
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
|
0.68 |
|
|
|
0.66 |
|
|
|
|
|
|
|
0.62 |
|
|
0.67 |
|
|
|
|
0.79 |
|
|
0.73 |
|