測定対象
地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
50101 |
湯田ダム貯水池 |
L‐9(ダムサイト) |
A |
測定結果
採取年月日 |
1996.04.22 |
1996.04.22 |
1996.04.22 |
1996.05.15 |
1996.05.15 |
1996.05.15 |
1996.06.24 |
1996.06.24 |
1996.06.24 |
1996.07.17 |
1996.07.17 |
1996.07.17 |
1996.08.21 |
1996.08.21 |
1996.08.21 |
1996.09.11 |
1996.09.11 |
1996.09.11 |
1996.10.16 |
1996.10.16 |
1996.10.16 |
1996.11.13 |
1996.11.13 |
1996.11.13 |
1996.12.11 |
1996.12.11 |
1996.12.11 |
1997.01.22 |
1997.01.22 |
1997.01.22 |
1997.02.12 |
1997.02.12 |
1997.02.12 |
1997.03.12 |
1997.03.12 |
1997.03.12 |
採取時刻 |
0950 |
1035 |
1100 |
0930 |
1025 |
1045 |
1040 |
1140 |
1200 |
1020 |
1105 |
1125 |
1025 |
1115 |
1135 |
0925 |
1020 |
1030 |
0915 |
1000 |
1025 |
0915 |
1000 |
1025 |
1000 |
1049 |
1114 |
1030 |
1120 |
1145 |
1030 |
1125 |
1145 |
1025 |
1120 |
1140 |
天候 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
雨 |
雨 |
雨 |
雨 |
雨 |
雨 |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
雨 |
雨 |
雨 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
気温 (℃) |
7.5 |
8.0 |
8.1 |
11.9 |
11.7 |
11.6 |
14.6 |
14.8 |
14.9 |
22.5 |
22.5 |
22.5 |
20.4 |
22.7 |
23.8 |
20.8 |
22.2 |
22.3 |
9.0 |
10.0 |
10.1 |
1.7 |
1.8 |
1.8 |
3.1 |
3.4 |
3.5 |
-6.8 |
-6.0 |
-5.6 |
-0.6 |
-0.6 |
-0.6 |
1.0 |
0.5 |
0.5 |
水温 (℃) |
6.6 |
5.0 |
5.0 |
6.8 |
6.5 |
6.5 |
12.7 |
10.9 |
7.2 |
19.8 |
13.3 |
7.9 |
22.1 |
13.2 |
8.5 |
20.3 |
13.0 |
8.4 |
14.8 |
11.6 |
8.2 |
8.5 |
8.3 |
8.1 |
4.2 |
4.0 |
4.0 |
0.8 |
1.2 |
1.2 |
0.7 |
0.8 |
1.0 |
0.6 |
0.9 |
0.9 |
採取水深 (m) |
0.5 |
25.0 |
55.0 |
0.5 |
30.0 |
60.0 |
0.5 |
30.0 |
55.0 |
0.5 |
25.0 |
48.0 |
0.5 |
25.0 |
47.0 |
0.5 |
25.0 |
46.0 |
0.5 |
20.0 |
44.0 |
0.5 |
20.0 |
45.0 |
0.5 |
25.0 |
55.0 |
0.5 |
25.0 |
54.0 |
0.5 |
25.0 |
47.0 |
0.5 |
25.0 |
45.0 |
全水深 (m) |
56.00 |
56.00 |
56.00 |
61.00 |
61.00 |
61.00 |
56.00 |
56.00 |
56.00 |
49.00 |
49.00 |
49.00 |
48.00 |
48.00 |
48.00 |
47.00 |
47.00 |
47.00 |
45.00 |
45.00 |
45.00 |
46.00 |
46.00 |
46.00 |
56.00 |
56.00 |
56.00 |
55.00 |
55.00 |
55.00 |
48.00 |
48.00 |
48.00 |
46.00 |
46.00 |
46.00 |
透明度 (m) |
2.00 |
2.00 |
2.00 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
0.50 |
|
|
|
|
|
|
|
|
|
1.00 |
1.00 |
1.00 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
1.50 |
|
|
|
外観 |
無色澄明 |
無色澄明 |
無色澄明 |
微白濁 |
微白濁 |
微白濁 |
微白濁 |
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 |
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 |
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 |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
なし |
pH |
6.8 |
6.9 |
6.9 |
6.9 |
6.9 |
6.8 |
6.9 |
6.8 |
6.8 |
7.3 |
6.9 |
6.8 |
7.3 |
6.8 |
6.7 |
7.3 |
7.2 |
6.9 |
6.9 |
6.7 |
6.4 |
7.2 |
7.2 |
7.2 |
7.2 |
7.0 |
7.1 |
7.1 |
7.0 |
6.9 |
7.0 |
6.9 |
6.9 |
6.7 |
6.6 |
6.7 |
DO (mg/l) |
11.0 |
11.0 |
11.0 |
11.0 |
11.0 |
11.0 |
9.6 |
8.9 |
9.3 |
8.5 |
8.7 |
7.9 |
7.7 |
6.6 |
3.3 |
8.3 |
6.2 |
3.3 |
9.0 |
7.4 |
3.8 |
9.8 |
10.0 |
9.9 |
11.0 |
11.0 |
11.0 |
13.0 |
12.0 |
12.0 |
12.0 |
12.0 |
12.0 |
12.0 |
11.0 |
11.0 |
BOD (mg/l) |
< 0.5 |
< 0.5 |
< 0.5 |
0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
1.1 |
0.6 |
0.7 |
0.8 |
< 0.5 |
0.7 |
1.1 |
0.9 |
0.6 |
0.9 |
0.7 |
0.8 |
0.8 |
0.7 |
0.7 |
0.5 |
1.0 |
0.6 |
0.6 |
0.5 |
0.9 |
< 0.5 |
< 0.5 |
0.7 |
COD (mg/l) |
1.6 |
1.5 |
1.4 |
1.8 |
1.7 |
1.6 |
2.7 |
2.1 |
1.3 |
2.4 |
2.6 |
2.1 |
2.8 |
1.9 |
1.8 |
2.1 |
1.9 |
1.4 |
2.8 |
2.0 |
1.9 |
2.0 |
2.1 |
1.7 |
1.5 |
1.5 |
1.6 |
1.5 |
1.9 |
1.5 |
1.2 |
1.2 |
1.3 |
1.4 |
1.4 |
1.2 |
SS (mg/l) |
4 |
5 |
5 |
12 |
12 |
10 |
6 |
15 |
5 |
5 |
5 |
8 |
4 |
4 |
11 |
2 |
4 |
7 |
4 |
4 |
4 |
2 |
2 |
3 |
2 |
2 |
2 |
1 |
1 |
1 |
1 |
1 |
1 |
2 |
2 |
2 |
大腸菌群数 (MPN/100ml) |
3.3E+01 |
2.3E+01 |
1.3E+01 |
7.9E+01 |
4.9E+01 |
4.9E+01 |
1.3E+02 |
1.3E+02 |
3.3E+01 |
3.3E+02 |
4.9E+01 |
1.3E+02 |
1.7E+02 |
2.4E+02 |
4.9E+01 |
7.9E+01 |
3.3E+01 |
4.9E+01 |
3.3E+02 |
3.3E+01 |
4.9E+01 |
2.4E+02 |
3.3E+02 |
3.3E+02 |
7.9E+01 |
3.3E+01 |
4.9E+01 |
4.5E+00 |
< 2.0E+00 |
< 2.0E+00 |
2.0E+00 |
< 2.0E+00 |
2.0E+00 |
2.3E+01 |
2.3E+01 |
7.9E+01 |
全窒素 (mg/l) |
|
|
|
0.39 |
0.39 |
0.42 |
|
|
|
0.43 |
0.41 |
0.62 |
|
|
|
0.30 |
0.32 |
0.50 |
|
|
|
0.22 |
0.21 |
0.22 |
|
|
|
0.31 |
0.33 |
0.34 |
|
|
|
0.39 |
0.40 |
0.42 |
全燐 (mg/l) |
|
|
|
0.022 |
0.021 |
0.021 |
|
|
|
0.021 |
0.019 |
0.020 |
|
|
|
0.015 |
0.012 |
0.014 |
|
|
|
0.012 |
0.013 |
0.011 |
|
|
|
0.008 |
0.009 |
0.009 |
|
|
|
0.007 |
0.009 |
0.009 |
カドミウム (mg/l) |
|
|
|
< 0.001 |
|
|
|
|
|
< 0.001 |
|
|
|
|
|
< 0.001 |
|
|
|
|
|
< 0.001 |
|
|
|
|
|
< 0.001 |
|
|
|
|
|
< 0.001 |
|
|
全シアン (mg/l) |
|
|
|
N |
|
|
|
|
|
N |
|
|
|
|
|
N |
|
|
|
|
|
N |
|
|
|
|
|
N |
|
|
|
|
|
N |
|
|
鉛 (mg/l) |
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
六価クロム (mg/l) |
|
|
|
< 0.04 |
|
|
|
|
|
< 0.04 |
|
|
|
|
|
< 0.04 |
|
|
|
|
|
< 0.04 |
|
|
|
|
|
< 0.04 |
|
|
|
|
|
< 0.04 |
|
|
砒素 (mg/l) |
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
総水銀 (mg/l) |
|
|
|
< 0.0005 |
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
< 0.0005 |
|
|
|
|
|
< 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) |
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
< 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 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
テトラクロロエチレン (mg/l) |
|
|
|
|
|
|
|
|
|
< 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) |
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
< 0.002 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
アンモニア性窒素 (mg/l) |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
|
|
|
< 0.1 |
< 0.1 |
< 0.1 |
クロロフィル-a (ug/l) |
|
|
|
< 0.5 |
< 0.5 |
< 0.5 |
|
|
|
5.3 |
< 0.5 |
< 0.5 |
|
|
|
3.4 |
< 0.5 |
< 0.5 |
|
|
|
4.9 |
4.9 |
4.8 |
|
|
|
< 0.5 |
< 0.5 |
< 0.5 |
|
|
|
< 0.5 |
< 0.5 |
< 0.5 |
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 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
硝酸性窒素及び亜硝酸性窒素 (mg/l) |
|
|
|
0.17 |
0.17 |
0.16 |
|
|
|
0.13 |
0.16 |
0.15 |
0.15 |
0.15 |
0.15 |
0.12 |
0.20 |
0.21 |
|
|
|
0.10 |
0.08 |
0.08 |
|
|
|
0.19 |
0.19 |
0.19 |
|
|
|
0.29 |
0.33 |
0.32 |