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 |
1997.04.30 |
1997.04.30 |
1997.04.30 |
1997.05.28 |
1997.05.28 |
1997.05.28 |
1997.06.11 |
1997.06.11 |
1997.06.11 |
1997.07.15 |
1997.07.15 |
1997.07.15 |
1997.08.06 |
1997.08.06 |
1997.08.06 |
1997.09.17 |
1997.09.17 |
1997.09.17 |
1997.10.15 |
1997.10.15 |
1997.10.15 |
1997.11.12 |
1997.11.12 |
1997.11.12 |
1997.12.10 |
1997.12.10 |
1997.12.10 |
1998.01.07 |
1998.01.07 |
1998.01.07 |
1998.02.18 |
1998.02.18 |
1998.02.18 |
1998.03.11 |
1998.03.11 |
1998.03.11 |
採取時刻 |
1020 |
1115 |
1140 |
0930 |
1025 |
1045 |
1000 |
1050 |
1110 |
1000 |
1050 |
1110 |
1010 |
1100 |
1120 |
1040 |
1130 |
1150 |
1030 |
1120 |
1140 |
1005 |
1055 |
1115 |
1030 |
1130 |
1150 |
1120 |
1215 |
1235 |
1020 |
1105 |
1130 |
0855 |
0945 |
1005 |
天候 |
曇り |
曇り |
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 |
雨 |
雨 |
雨 |
雨 |
雨 |
雨 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
雪 |
雪 |
雪 |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
気温 (℃) |
14.4 |
15.3 |
15.5 |
15.2 |
15.5 |
15.6 |
19.6 |
20.2 |
20.7 |
23.7 |
24.0 |
24.1 |
25.4 |
26.5 |
26.9 |
14.9 |
14.9 |
15.0 |
11.5 |
11.8 |
11.8 |
10.0 |
13.8 |
13.8 |
4.0 |
6.0 |
6.5 |
-6.4 |
-6.4 |
-6.4 |
-2.0 |
-1.7 |
-1.6 |
0.7 |
1.3 |
1.7 |
水温 (℃) |
8.6 |
7.0 |
6.3 |
12.8 |
8.6 |
8.1 |
13.5 |
8.7 |
7.8 |
21.4 |
13.2 |
8.8 |
25.3 |
13.1 |
9.3 |
17.5 |
14.1 |
9.7 |
11.6 |
10.0 |
9.9 |
8.3 |
7.8 |
7.5 |
6.7 |
6.4 |
6.1 |
2.7 |
2.9 |
2.9 |
2.5 |
2.8 |
2.8 |
2.1 |
3.1 |
3.2 |
採取水深 (m) |
0.5 |
30.0 |
65.0 |
0.5 |
30.0 |
60.0 |
0.5 |
30.0 |
61.0 |
0.5 |
25.0 |
50.0 |
0.5 |
25.0 |
49.0 |
0.5 |
25.0 |
45.0 |
0.5 |
25.0 |
45.0 |
0.5 |
30.0 |
55.0 |
0.5 |
30.0 |
60.0 |
0.5 |
30.0 |
60.0 |
0.5 |
20.0 |
44.0 |
0.5 |
25.0 |
45.0 |
全水深 (m) |
66.0 |
|
|
61.0 |
|
|
62.0 |
|
|
51.0 |
|
|
50.0 |
|
|
46.0 |
|
|
46.0 |
|
|
56.0 |
|
|
61.0 |
|
|
61.0 |
|
|
45.0 |
|
|
46.0 |
|
|
透明度 (m) |
1.50 |
|
|
1.50 |
|
|
2.00 |
|
|
1.00 |
|
|
1.80 |
|
|
1.00 |
|
|
1.00 |
|
|
4.50 |
|
|
2.00 |
|
|
2.00 |
|
|
1.50 |
|
|
1.50 |
|
|
外観 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
微白濁 |
微白濁 |
無色澄明 |
無色澄明 |
無色澄明 |
無色澄明 |
濃白濁 |
濃白濁 |
無色澄明 |
微白濁 |
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 |
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 |
7.0 |
6.9 |
6.9 |
7.1 |
6.8 |
6.8 |
7.2 |
6.8 |
6.8 |
8.1 |
6.8 |
6.7 |
7.2 |
6.7 |
6.6 |
6.8 |
6.5 |
6.5 |
7.1 |
7.2 |
7.2 |
7.0 |
7.1 |
7.0 |
7.0 |
7.0 |
7.0 |
7.1 |
7.0 |
7.1 |
6.9 |
6.9 |
6.8 |
6.9 |
6.8 |
6.8 |
DO (mg/l) |
11.0 |
11.3 |
11.1 |
9.8 |
10.0 |
8.5 |
10.0 |
10.2 |
8.8 |
10.0 |
9.2 |
8.0 |
7.5 |
8.7 |
5.5 |
7.1 |
3.5 |
2.1 |
10.3 |
10.1 |
9.9 |
11.1 |
10.9 |
10.5 |
11.3 |
11.5 |
11.4 |
12.4 |
12.3 |
12.1 |
13.1 |
12.8 |
12.7 |
11.7 |
11.2 |
11.8 |
BOD (mg/l) |
< 0.5 |
0.5 |
0.5 |
1.1 |
< 0.5 |
< 0.5 |
0.6 |
< 0.5 |
< 0.5 |
1.6 |
< 0.5 |
< 0.5 |
1.0 |
< 0.5 |
0.7 |
0.5 |
< 0.5 |
0.5 |
0.5 |
0.7 |
1.7 |
< 0.5 |
< 0.5 |
< 0.5 |
0.7 |
0.5 |
0.6 |
0.6 |
0.6 |
0.6 |
< 0.5 |
< 0.5 |
0.6 |
0.7 |
0.8 |
0.8 |
COD (mg/l) |
1.2 |
1.0 |
1.0 |
1.8 |
1.6 |
1.6 |
1.7 |
1.4 |
1.4 |
2.7 |
3.1 |
3.4 |
1.8 |
2.3 |
2.3 |
2.2 |
2.3 |
3.0 |
2.2 |
2.2 |
3.1 |
1.6 |
1.8 |
1.9 |
1.7 |
1.6 |
1.7 |
1.2 |
1.1 |
1.0 |
1.0 |
1.0 |
1.6 |
1.3 |
1.5 |
1.7 |
SS (mg/l) |
2 |
2 |
2 |
3 |
6 |
10 |
2 |
5 |
6 |
5 |
35 |
47 |
2 |
15 |
22 |
8 |
12 |
18 |
3 |
3 |
4 |
1 |
1 |
2 |
1 |
2 |
3 |
2 |
2 |
2 |
1 |
1 |
15 |
2 |
3 |
3 |
大腸菌群数 (MPN/100ml) |
4.5E+00 |
7.8E+00 |
1.1E+01 |
1.3E+02 |
2.4E+02 |
4.9E+01 |
2.3E+01 |
1.3E+01 |
1.3E+01 |
4.9E+01 |
1.3E+03 |
3.3E+02 |
4.9E+01 |
2.3E+01 |
2.3E+01 |
3.3E+02 |
4.9E+01 |
7.9E+01 |
4.9E+02 |
7.9E+02 |
1.3E+03 |
2.0E+00 |
3.3E+01 |
2.3E+01 |
3.3E+01 |
3.3E+01 |
4.9E+01 |
7.8E+00 |
7.8E+00 |
< 1.8E+00 |
1.3E+01 |
3.3E+01 |
2.3E+01 |
7.9E+01 |
7.9E+01 |
1.3E+01 |
全窒素 (mg/l) |
|
|
|
0.49 |
0.39 |
0.39 |
|
|
|
0.44 |
0.44 |
0.47 |
|
|
|
0.37 |
0.33 |
0.57 |
|
|
|
0.30 |
0.26 |
0.26 |
|
|
|
0.34 |
0.33 |
0.32 |
|
|
|
0.46 |
0.46 |
0.37 |
全燐 (mg/l) |
|
|
|
0.016 |
0.021 |
0.018 |
|
|
|
0.031 |
0.056 |
0.059 |
|
|
|
0.018 |
0.019 |
0.029 |
|
|
|
0.015 |
0.014 |
0.012 |
|
|
|
0.010 |
0.011 |
0.011 |
|
|
|
0.009 |
0.011 |
0.012 |
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) |
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
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) |
|
|
|
5.0E+00 |
< 1.0E+00 |
< 1.0E+00 |
|
|
|
3.4E+01 |
< 1.0E+00 |
< 1.0E+00 |
|
|
|
< 1.0E+00 |
< 1.0E+00 |
< 1.0E+00 |
|
|
|
< 1.0E+00 |
< 1.0E+00 |
< 1.0E+00 |
|
|
|
< 1.0E+00 |
< 1.0E+00 |
< 1.0E+00 |
|
|
|
< 1.0E+00 |
< 1.0E+00 |
< 1.0E+00 |
透視度 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
9.0 |
9.0 |
> 30.0 |
17.0 |
15.0 |
> 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) |
|
|
|
0.21 |
0.20 |
0.20 |
|
|
|
0.11 |
0.17 |
0.17 |
|
|
|
0.17 |
0.16 |
0.12 |
|
|
|
0.16 |
0.17 |
0.17 |
|
|
|
0.20 |
0.20 |
0.20 |
|
|
|
0.25 |
0.25 |
0.26 |