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 |
2023.04.11 |
2023.04.11 |
2023.04.11 |
2023.05.16 |
2023.05.16 |
2023.05.16 |
2023.06.13 |
2023.06.13 |
2023.06.13 |
2023.07.11 |
2023.07.11 |
2023.07.11 |
2023.08.08 |
2023.08.08 |
2023.08.08 |
2023.09.12 |
2023.09.12 |
2023.09.12 |
2023.10.10 |
2023.10.10 |
2023.10.10 |
2023.11.14 |
2023.11.14 |
2023.11.14 |
2023.12.12 |
2023.12.12 |
2023.12.12 |
2024.01.16 |
2024.01.16 |
2024.01.16 |
2024.02.01 |
2024.02.01 |
2024.02.01 |
2024.03.01 |
2024.03.01 |
2024.03.01 |
採取時刻 |
0928 |
0956 |
1005 |
1158 |
1226 |
1242 |
1145 |
1245 |
1314 |
0941 |
1018 |
1029 |
1010 |
1057 |
1111 |
0943 |
1011 |
1023 |
0940 |
1004 |
1015 |
1005 |
1051 |
1117 |
1156 |
1236 |
1252 |
0924 |
1000 |
1034 |
0907 |
0950 |
1020 |
0945 |
1025 |
1039 |
天候 |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
晴れ |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
雪 |
雪 |
雪 |
気温 (℃) |
14.4 |
16.5 |
16.6 |
20.8 |
21.0 |
20.8 |
25.2 |
26.0 |
26.6 |
27.8 |
28.7 |
28.0 |
30.2 |
30.6 |
30.9 |
28.2 |
28.3 |
29.2 |
16.1 |
17.6 |
18.2 |
7.9 |
8.2 |
8.6 |
3.3 |
3.5 |
3.6 |
-4.8 |
-3.9 |
-3.8 |
4.0 |
4.5 |
4.1 |
1.2 |
2.0 |
2.1 |
水温 (℃) |
13.2 |
5.9 |
5.0 |
18.2 |
7.9 |
6.0 |
21.2 |
14.1 |
8.0 |
23.0 |
18.5 |
5.9 |
26.0 |
22.0 |
6.6 |
25.0 |
21.1 |
6.0 |
18.0 |
17.0 |
6.1 |
13.2 |
12.4 |
5.9 |
8.3 |
7.9 |
5.8 |
3.0 |
4.2 |
4.3 |
4.0 |
4.0 |
3.2 |
3.1 |
3.1 |
3.2 |
流量 (m3/s) |
17.62 |
17.62 |
17.62 |
20.91 |
20.91 |
20.91 |
13.66 |
13.66 |
13.66 |
11.88 |
11.88 |
11.88 |
15.20 |
15.20 |
15.20 |
26.50 |
26.50 |
26.50 |
23.70 |
23.70 |
23.70 |
16.22 |
16.22 |
16.22 |
30.49 |
30.49 |
30.49 |
11.29 |
11.29 |
11.29 |
19.00 |
19.00 |
19.00 |
15.10 |
15.10 |
15.10 |
採取水深 (m) |
0.50 |
23.70 |
46.40 |
0.50 |
26.90 |
52.80 |
0.50 |
24.10 |
47.20 |
0.50 |
22.90 |
44.80 |
0.50 |
23.20 |
45.40 |
0.50 |
23.10 |
45.20 |
0.50 |
24.20 |
47.40 |
0.50 |
28.70 |
56.40 |
0.50 |
30.60 |
60.20 |
0.50 |
23.00 |
45.00 |
0.50 |
21.50 |
42.00 |
0.50 |
20.50 |
40.00 |
全水深 (m) |
47.40 |
47.40 |
47.40 |
53.80 |
53.80 |
53.80 |
48.20 |
48.20 |
48.20 |
45.80 |
45.80 |
45.80 |
46.40 |
46.40 |
46.40 |
46.20 |
46.20 |
46.20 |
48.40 |
48.40 |
48.40 |
57.40 |
57.40 |
57.40 |
61.20 |
61.20 |
61.20 |
46.00 |
46.00 |
46.00 |
43.00 |
43.00 |
43.00 |
41.00 |
41.00 |
41.00 |
透明度 (m) |
3.3 |
|
|
3.4 |
|
|
2.5 |
|
|
1.9 |
|
|
2.3 |
|
|
2.7 |
|
|
3.4 |
|
|
5.7 |
|
|
4.7 |
|
|
5.1 |
|
|
5.6 |
|
|
3.6 |
|
|
前日までの降雨状況 |
4日前雨 |
4日前雨 |
4日前雨 |
前日雨 |
前日雨 |
前日雨 |
4日前雨 |
4日前雨 |
4日前雨 |
前日雨 |
前日雨 |
前日雨 |
なし |
なし |
なし |
3日前雨 |
3日前雨 |
3日前雨 |
前日雨 |
前日雨 |
前日雨 |
4日前雨 |
4日前雨 |
4日前雨 |
3日前雨 |
3日前雨 |
3日前雨 |
なし |
なし |
なし |
なし |
なし |
なし |
前々日雪 |
前々日雪 |
前々日雪 |
外観 |
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 |
茶色 |
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 |
茶色 |
無色澄明 |
無色澄明 |
無色澄明 |
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 |
下水臭 |
なし |
なし |
下水臭 |
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 |
下水臭 |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
pH |
8.0 |
7.3 |
7.0 |
8.4 |
7.2 |
7.1 |
8.6 |
7.4 |
6.9 |
9.0 |
7.4 |
6.9 |
8.4 |
7.4 |
7.0 |
9.0 |
7.4 |
7.1 |
7.5 |
7.4 |
7.1 |
7.6 |
7.3 |
7.1 |
7.5 |
7.4 |
7.2 |
7.5 |
7.5 |
7.4 |
7.5 |
7.5 |
7.5 |
7.5 |
7.5 |
7.5 |
DO (mg/l) |
11 |
10 |
3.0 |
10 |
9.1 |
6.4 |
10 |
9.2 |
4.5 |
11 |
8.2 |
0.9 |
8.4 |
7.5 |
1.2 |
9.9 |
6.8 |
2.3 |
8.3 |
7.6 |
2.2 |
9.3 |
8.3 |
3.6 |
9.8 |
9.5 |
1.2 |
11 |
11 |
11 |
11 |
11 |
11 |
12 |
11 |
12 |
BOD (mg/l) |
< 0.5 |
< 0.5 |
1.1 |
0.9 |
< 0.5 |
0.7 |
1.1 |
1.1 |
1.5 |
1.9 |
0.5 |
1.2 |
1.0 |
< 0.5 |
0.7 |
1.1 |
0.7 |
1.2 |
0.9 |
1.5 |
0.5 |
0.7 |
0.6 |
1.0 |
0.5 |
< 0.5 |
1.2 |
0.7 |
0.7 |
0.7 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.5 |
COD (mg/l) |
2.3 |
1.4 |
2.4 |
2.6 |
1.6 |
1.6 |
2.3 |
2.1 |
4.1 |
3.1 |
2.6 |
5.2 |
3.0 |
3.2 |
6.0 |
2.8 |
2.7 |
4.1 |
2.3 |
1.9 |
5.2 |
2.1 |
1.9 |
5.3 |
1.9 |
1.9 |
5.0 |
1.9 |
1.8 |
1.9 |
1.9 |
1.7 |
1.8 |
1.9 |
1.8 |
1.9 |
SS (mg/l) |
1 |
< 1 |
3 |
1 |
< 1 |
1 |
< 1 |
2 |
4 |
1 |
1 |
3 |
1 |
3 |
3 |
1 |
1 |
6 |
1 |
1 |
1 |
1 |
< 1 |
2 |
< 1 |
< 1 |
1 |
< 1 |
< 1 |
1 |
< 1 |
< 1 |
< 1 |
1 |
< 1 |
1 |
全窒素 (mg/l) |
0.62 |
0.51 |
1.2 |
0.49 |
0.64 |
0.87 |
0.45 |
0.61 |
1.6 |
0.54 |
0.59 |
2.4 |
0.46 |
0.59 |
2.7 |
0.50 |
0.61 |
2.2 |
0.57 |
0.55 |
2.4 |
0.50 |
0.56 |
1.9 |
0.47 |
0.48 |
2.3 |
0.55 |
0.51 |
0.57 |
0.53 |
0.53 |
0.56 |
0.62 |
0.62 |
0.62 |
全燐 (mg/l) |
0.015 |
0.008 |
0.034 |
0.014 |
0.008 |
0.011 |
0.011 |
0.010 |
0.025 |
0.020 |
0.015 |
0.034 |
0.015 |
0.012 |
0.037 |
0.014 |
0.017 |
0.045 |
0.017 |
0.017 |
0.047 |
0.010 |
0.013 |
0.054 |
0.012 |
0.012 |
0.027 |
0.012 |
0.011 |
0.012 |
0.011 |
0.012 |
0.011 |
0.014 |
0.012 |
0.013 |
全亜鉛 (mg/l) |
0.002 |
< 0.001 |
0.001 |
< 0.001 |
< 0.001 |
0.002 |
0.002 |
0.005 |
0.012 |
0.003 |
0.001 |
0.002 |
< 0.001 |
< 0.001 |
0.002 |
< 0.001 |
< 0.001 |
0.001 |
0.001 |
< 0.001 |
0.001 |
< 0.001 |
< 0.001 |
0.003 |
< 0.001 |
0.001 |
0.003 |
< 0.001 |
0.001 |
0.002 |
0.001 |
< 0.001 |
0.001 |
0.002 |
< 0.001 |
0.002 |
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 |
|
|
|
大腸菌数 (個/100mL) |
2 |
1 |
< 1 |
< 1 |
5 |
11 |
2 |
1 |
10 |
< 1 |
4 |
20 |
2 |
< 1 |
18 |
14 |
12 |
18 |
6 |
20 |
18 |
3 |
2 |
12 |
2 |
< 1 |
6 |
< 1 |
< 1 |
< 1 |
4 |
4 |
3 |
< 1 |
< 1 |
1 |
カドミウム (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
< 0.0003 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
全シアン (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
鉛 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
< 0.001 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
六価クロム (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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) |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
0.007 |
0.004 |
< 0.004 |
< 0.004 |
0.015 |
< 0.004 |
< 0.004 |
< 0.004 |
0.007 |
< 0.004 |
< 0.004 |
0.006 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
< 0.004 |
ふっ素 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.08 |
|
|
|
|
|
|
|
|
|
|
|
< 0.08 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
アンモニア性窒素 (mg/l) |
< 0.05 |
< 0.05 |
0.46 |
< 0.05 |
< 0.05 |
0.19 |
< 0.05 |
< 0.05 |
0.98 |
< 0.05 |
< 0.05 |
1.6 |
< 0.05 |
< 0.05 |
1.8 |
< 0.05 |
< 0.05 |
1.7 |
< 0.05 |
< 0.05 |
1.6 |
< 0.05 |
< 0.05 |
1.5 |
< 0.05 |
< 0.05 |
1.8 |
< 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 |
4 |
< 2 |
< 2 |
2 |
< 2 |
< 2 |
6 |
< 2 |
< 2 |
< 2 |
2 |
< 2 |
< 2 |
< 2 |
< 2 |
2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
透視度 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
90 |
> 100 |
> 100 |
85 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
78 |
> 100 |
> 100 |
92 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
59 |
> 100 |
> 100 |
62 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
> 100 |
塩化物イオン (mg/l) |
|
|
|
4 |
5 |
5 |
|
|
|
|
|
|
4 |
4 |
5 |
|
|
|
|
|
|
4 |
4 |
5 |
|
|
|
|
|
|
4 |
4 |
4 |
|
|
|
ほう素 (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
< 0.1 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
|
|
|
|
|
|
|
|
0.29 |
|
|
|
|
|
|
|
|
|
|
|
0.37 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1,4-ジオキサン (mg/l) |
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
< 0.005 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
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 |
|
|
|
底層溶存酸素量 (mg/L) |
|
|
3.0 |
|
|
6.4 |
|
|
4.5 |
|
|
0.9 |
|
|
1.2 |
|
|
2.3 |
|
|
2.2 |
|
|
3.6 |
|
|
1.2 |
|
|
11 |
|
|
11 |
|
|
12 |
オルトリン酸態リン (mg/l) |
< 0.003 |
< 0.003 |
0.003 |
< 0.003 |
0.006 |
0.004 |
< 0.003 |
< 0.003 |
0.004 |
0.004 |
< 0.003 |
0.007 |
< 0.003 |
< 0.003 |
0.011 |
0.008 |
0.009 |
0.008 |
0.003 |
0.007 |
0.028 |
< 0.003 |
< 0.003 |
0.038 |
0.007 |
0.009 |
0.012 |
< 0.003 |
0.004 |
0.003 |
0.006 |
0.006 |
0.007 |
0.005 |
0.005 |
0.006 |