測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
50301 |
田瀬ダム貯水池 |
L‐5(ダムサイト) |
A |
測定結果
採取年月日 |
2020.04.15 |
2020.04.15 |
2020.04.15 |
2020.05.27 |
2020.05.27 |
2020.05.27 |
2020.06.10 |
2020.06.10 |
2020.06.10 |
2020.07.20 |
2020.07.20 |
2020.07.20 |
2020.08.19 |
2020.08.19 |
2020.08.19 |
2020.09.09 |
2020.09.09 |
2020.09.09 |
2020.10.14 |
2020.10.14 |
2020.10.14 |
2020.11.04 |
2020.11.04 |
2020.11.04 |
2020.12.09 |
2020.12.09 |
2020.12.09 |
2021.01.06 |
2021.01.06 |
2021.01.06 |
2021.02.03 |
2021.02.03 |
2021.02.03 |
2021.03.03 |
2021.03.03 |
2021.03.03 |
採取時刻 |
0945 |
1020 |
1029 |
0927 |
1000 |
1010 |
0950 |
1030 |
1040 |
0951 |
1011 |
1017 |
0958 |
1038 |
1051 |
0937 |
1003 |
1011 |
0925 |
0951 |
1000 |
0914 |
1001 |
1013 |
0916 |
0952 |
1001 |
0939 |
1020 |
1049 |
0923 |
0947 |
0959 |
0901 |
0926 |
0938 |
天候 |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
雨 |
雨 |
雨 |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
雪 |
雪 |
雪 |
晴れ |
晴れ |
晴れ |
気温 (℃) |
10.9 |
14.0 |
13.9 |
23.2 |
23.4 |
22.8 |
27.8 |
30.1 |
30.2 |
27.8 |
29.9 |
31.0 |
28.9 |
31.5 |
32.2 |
29.1 |
31.2 |
31.2 |
17.0 |
18.8 |
18.8 |
7.1 |
6.5 |
6.1 |
4.8 |
5.3 |
6.0 |
-5.8 |
-4.0 |
-2.5 |
-4.4 |
-4.4 |
-4.1 |
0.2 |
0.5 |
1.0 |
水温 (℃) |
9.0 |
6.9 |
5.2 |
19.7 |
8.0 |
6.1 |
21.2 |
12.5 |
6.0 |
21.9 |
17.1 |
6.9 |
24.1 |
19.0 |
6.9 |
25.9 |
21.8 |
8.0 |
17.5 |
16.1 |
8.5 |
8.9 |
12.4 |
7.8 |
9.7 |
9.0 |
7.1 |
4.9 |
5.1 |
4.0 |
1.8 |
3.1 |
3.1 |
2.6 |
3.0 |
2.9 |
流量 (m3/s) |
19.18 |
19.18 |
19.18 |
15.85 |
15.85 |
15.85 |
8.25 |
8.25 |
8.25 |
30.43 |
30.43 |
30.43 |
27.54 |
27.54 |
27.54 |
23.00 |
23.00 |
23.00 |
23.80 |
23.80 |
23.80 |
21.61 |
21.61 |
21.61 |
14.32 |
14.32 |
14.32 |
8.47 |
8.47 |
8.47 |
12.02 |
12.02 |
12.02 |
37.37 |
37.37 |
37.37 |
採取水深 (m) |
0.50 |
23.10 |
45.20 |
0.50 |
23.50 |
46.00 |
0.50 |
23.20 |
45.40 |
0.50 |
23.80 |
46.60 |
0.50 |
23.20 |
45.40 |
0.50 |
22.30 |
43.60 |
0.50 |
26.30 |
51.60 |
0.50 |
29.70 |
58.40 |
0.50 |
30.40 |
59.80 |
0.50 |
24.50 |
48.00 |
0.50 |
19.90 |
38.80 |
0.50 |
19.10 |
37.20 |
全水深 (m) |
46.20 |
46.20 |
46.20 |
47.00 |
47.00 |
47.00 |
46.40 |
46.40 |
46.40 |
47.60 |
47.60 |
47.60 |
46.40 |
46.40 |
46.40 |
44.60 |
44.60 |
44.60 |
52.60 |
52.60 |
52.60 |
59.40 |
59.40 |
59.40 |
60.80 |
60.80 |
60.80 |
49.00 |
49.00 |
49.00 |
39.80 |
39.80 |
39.80 |
38.20 |
38.20 |
38.20 |
透明度 (m) |
3.3 |
|
|
5.6 |
|
|
4.8 |
|
|
2.6 |
|
|
3.3 |
|
|
3.4 |
|
|
3.6 |
|
|
4.5 |
|
|
5.1 |
|
|
5.5 |
|
|
3.7 |
|
|
2.1 |
|
|
前日までの降雨状況 |
5日前小雨 |
5日前小雨 |
5日前小雨 |
前日小雨 |
前日小雨 |
前日小雨 |
5日前小雨 |
5日前小雨 |
5日前小雨 |
4日前小雨 |
4日前小雨 |
4日前小雨 |
前々日雨 |
前々日雨 |
前々日雨 |
4日前雨 |
4日前雨 |
4日前雨 |
前々日雨 |
前々日雨 |
前々日雨 |
前日雨 |
前日雨 |
前日雨 |
2日前小雨 |
2日前小雨 |
2日前小雨 |
前日雪 |
前日雪 |
前日雪 |
4日前雨 |
4日前雨 |
4日前雨 |
前日雨 |
前日雨 |
前日雨 |
外観 |
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 |
茶色 |
無色澄明 |
無色澄明 |
微茶濁 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
茶色 |
無色澄明 |
無色澄明 |
微茶濁 |
無色澄明 |
無色澄明 |
微茶濁 |
無色澄明 |
無色澄明 |
微茶濁 |
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 |
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 |
下水臭 |
なし |
なし |
下水臭 |
なし |
なし |
下水臭 |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
pH |
7.7 |
7.4 |
7.2 |
8.7 |
7.3 |
7.0 |
7.8 |
7.4 |
7.1 |
7.6 |
7.4 |
7.1 |
7.9 |
7.4 |
7.3 |
7.9 |
7.4 |
7.1 |
7.4 |
7.4 |
7.2 |
7.4 |
7.3 |
7.1 |
7.4 |
7.3 |
7.0 |
7.4 |
7.4 |
7.4 |
7.5 |
7.4 |
7.4 |
7.4 |
7.4 |
7.3 |
DO (mg/l) |
11 |
10 |
8.9 |
9.4 |
9.4 |
4.1 |
9.1 |
8.9 |
2.7 |
9.5 |
8.5 |
3.3 |
9.0 |
7.4 |
1.8 |
8.7 |
6.5 |
2.7 |
8.9 |
8.8 |
1.0 |
9.1 |
8.2 |
< 0.5 |
9.6 |
9.8 |
0.5 |
11 |
10 |
10 |
12 |
12 |
11 |
12 |
12 |
11 |
BOD (mg/l) |
0.9 |
0.5 |
1.0 |
0.9 |
0.5 |
1.2 |
0.9 |
0.6 |
1.4 |
0.7 |
0.7 |
1.1 |
0.7 |
0.5 |
0.7 |
0.6 |
0.5 |
0.7 |
0.6 |
0.5 |
0.8 |
< 0.5 |
< 0.5 |
3.3 |
0.6 |
0.6 |
3.8 |
0.6 |
0.5 |
0.8 |
< 0.5 |
0.5 |
0.5 |
0.8 |
< 0.5 |
0.6 |
COD (mg/l) |
2.4 |
2.0 |
2.3 |
2.2 |
2.2 |
2.4 |
2.4 |
2.4 |
3.2 |
4.2 |
4.6 |
4.4 |
3.8 |
4.3 |
4.9 |
2.9 |
2.8 |
3.7 |
2.8 |
2.5 |
6.9 |
2.7 |
2.6 |
10 |
2.3 |
2.0 |
8.7 |
1.8 |
1.8 |
2.0 |
1.7 |
1.8 |
1.8 |
2.6 |
2.5 |
1.9 |
SS (mg/l) |
2 |
1 |
1 |
< 1 |
< 1 |
1 |
< 1 |
1 |
3 |
1 |
2 |
4 |
1 |
2 |
3 |
1 |
2 |
4 |
1 |
1 |
2 |
1 |
< 1 |
4 |
1 |
< 1 |
32 |
< 1 |
< 1 |
1 |
< 1 |
< 1 |
< 1 |
2 |
2 |
1 |
大腸菌群数 (MPN/100ml) |
13 |
13 |
13 |
23 |
4.5 |
4.5 |
170 |
4900 |
33 |
130 |
330 |
1300 |
27 |
330 |
130 |
79 |
1300 |
33 |
240 |
490 |
790 |
240 |
240 |
490 |
79 |
33 |
1300 |
23 |
23 |
33 |
7.8 |
4.5 |
2 |
130 |
330 |
130 |
全窒素 (mg/l) |
0.53 |
0.60 |
0.66 |
0.29 |
0.56 |
0.99 |
0.44 |
0.53 |
1.1 |
0.65 |
0.77 |
1.6 |
0.53 |
0.64 |
1.7 |
0.47 |
0.66 |
1.4 |
0.54 |
0.56 |
1.9 |
0.45 |
0.45 |
5.0 |
0.40 |
0.53 |
5.6 |
0.44 |
0.47 |
0.45 |
0.42 |
0.45 |
0.48 |
0.73 |
0.75 |
0.73 |
全燐 (mg/l) |
0.010 |
0.012 |
0.012 |
0.006 |
0.009 |
0.017 |
0.010 |
0.012 |
0.020 |
0.015 |
0.031 |
0.027 |
0.013 |
0.021 |
0.023 |
0.012 |
0.019 |
0.026 |
0.013 |
0.014 |
0.051 |
0.009 |
0.013 |
0.18 |
0.008 |
0.010 |
0.084 |
0.010 |
0.008 |
0.010 |
0.007 |
0.007 |
0.007 |
0.022 |
0.024 |
0.018 |
全亜鉛 (mg/l) |
< 0.001 |
0.002 |
0.003 |
0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
0.001 |
0.001 |
0.002 |
0.001 |
0.001 |
< 0.001 |
0.001 |
0.001 |
0.001 |
0.006 |
0.003 |
< 0.001 |
0.001 |
0.002 |
< 0.001 |
0.001 |
0.002 |
< 0.001 |
0.003 |
0.001 |
0.001 |
0.001 |
0.001 |
0.009 |
0.001 |
0.001 |
ノニルフェノール (mg/l) |
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
< 0.00006 |
|
|
カドミウム (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
全シアン (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
鉛 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
六価クロム (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
砒素 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
総水銀 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PCB (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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) |
|
|
|
|
|
|
|
|
|
< 0.01 |
|
|
|
|
|
|
|
|
|
|
|
< 0.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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) |
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
テトラクロロエチレン (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
亜硝酸性窒素 (mg/l) |
0.002 |
0.001 |
< 0.001 |
0.002 |
< 0.001 |
0.001 |
0.003 |
0.002 |
0.003 |
0.007 |
0.006 |
0.004 |
0.011 |
0.009 |
0.006 |
0.003 |
< 0.001 |
0.045 |
0.001 |
0.003 |
< 0.001 |
0.003 |
0.011 |
< 0.001 |
0.002 |
0.006 |
0.003 |
0.001 |
0.001 |
0.001 |
< 0.001 |
< 0.001 |
< 0.001 |
0.001 |
0.001 |
< 0.001 |
ふっ素 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.05 |
|
|
|
|
|
|
|
|
|
|
|
0.05 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
アンモニア性窒素 (mg/l) |
< 0.05 |
< 0.05 |
0.11 |
< 0.05 |
< 0.05 |
0.33 |
< 0.05 |
< 0.05 |
0.41 |
< 0.05 |
< 0.05 |
0.91 |
< 0.05 |
< 0.05 |
1.0 |
< 0.05 |
< 0.05 |
0.55 |
< 0.05 |
< 0.05 |
1.3 |
< 0.05 |
< 0.05 |
2.9 |
< 0.05 |
0.05 |
3.4 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
< 0.05 |
クロロフィル-a (ug/l) |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
6 |
< 2 |
< 2 |
5 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
2 |
< 2 |
< 2 |
3 |
< 2 |
< 2 |
3 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
2 |
2 |
2 |
2 |
2 |
< 2 |
透視度 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
98 |
> 100 |
> 100 |
67 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
75 |
> 100 |
> 100 |
65 |
> 100 |
> 100 |
61 |
> 100 |
> 100 |
55 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
塩化物イオン (mg/l) |
|
|
|
4.0 |
4.5 |
4.8 |
|
|
|
|
|
|
3.7 |
3.6 |
4.7 |
|
|
|
|
|
|
3.7 |
3.9 |
4.5 |
|
|
|
|
|
|
4.3 |
4.2 |
4.2 |
|
|
|
プランクトン(優占種) |
Asterionel |
|
|
Asterionel |
|
|
Asterionel |
|
|
Fragilaria |
|
|
Fragilaria |
|
|
Fragilaria |
|
|
Asterionel |
|
|
Cyclotella |
|
|
Aulacoseir |
|
|
Cyclotella |
|
|
Asterionel |
|
|
Asterionel |
|
|
ほう素 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.02 |
|
|
|
|
|
|
|
|
|
|
|
< 0.02 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
|
|
|
|
|
|
|
|
0.34 |
|
|
|
|
|
|
|
|
|
|
|
0.32 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,4-ジオキサン (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
ふん便性大腸菌群数 (個/100mL) |
< 2 |
< 2 |
< 2 |
3 |
2 |
2 |
8 |
4 |
7 |
6 |
38 |
82 |
5 |
150 |
28 |
4 |
47 |
34 |
24 |
210 |
320 |
10 |
15 |
59 |
7 |
4 |
16 |
7 |
13 |
12 |
< 2 |
< 2 |
< 2 |
3 |
6 |
14 |
直鎖アルキルベンゼンスルホン酸及びその塩 (mg/l) |
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
< 0.0006 |
|
|
オルトリン酸態リン (mg/l) |
0.003 |
0.005 |
< 0.003 |
< 0.003 |
0.004 |
< 0.003 |
< 0.003 |
0.004 |
0.003 |
0.003 |
0.014 |
0.006 |
< 0.003 |
0.007 |
0.010 |
< 0.003 |
0.005 |
0.011 |
< 0.003 |
0.004 |
0.031 |
< 0.003 |
0.004 |
0.14 |
0.003 |
0.004 |
0.044 |
0.004 |
0.003 |
0.003 |
< 0.003 |
< 0.003 |
< 0.003 |
0.005 |
0.005 |
0.004 |