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 |
1998.04.22 |
1998.04.22 |
1998.04.22 |
1998.05.13 |
1998.05.13 |
1998.05.13 |
1998.06.10 |
1998.06.10 |
1998.06.10 |
1998.07.15 |
1998.07.15 |
1998.07.15 |
1998.08.24 |
1998.08.24 |
1998.08.24 |
1998.09.29 |
1998.09.29 |
1998.09.29 |
1998.10.14 |
1998.10.14 |
1998.10.14 |
1998.11.11 |
1998.11.11 |
1998.11.11 |
1998.12.09 |
1998.12.09 |
1998.12.09 |
1999.01.07 |
1999.01.07 |
1999.01.07 |
1999.02.17 |
1999.02.17 |
1999.02.17 |
1999.03.10 |
1999.03.10 |
1999.03.10 |
採取時刻 |
1000 |
1055 |
1120 |
1120 |
1220 |
1250 |
0930 |
1025 |
1045 |
1020 |
1105 |
1128 |
1010 |
1100 |
1120 |
1120 |
1210 |
1230 |
1020 |
1105 |
1125 |
1015 |
1100 |
1120 |
0900 |
0945 |
1020 |
1000 |
1102 |
1140 |
1050 |
1140 |
1200 |
1120 |
1205 |
1230 |
天候 |
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 |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
雪 |
雪 |
雪 |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
気温 (℃) |
16.4 |
17.6 |
18.2 |
13.1 |
13.3 |
13.0 |
16.1 |
16.3 |
16.5 |
20.5 |
21.3 |
22.0 |
23.4 |
24.7 |
25.1 |
20.7 |
20.8 |
20.8 |
16.1 |
16.8 |
17.0 |
6.2 |
7.3 |
7.5 |
1.0 |
1.1 |
1.1 |
0.0 |
0.4 |
0.7 |
5.5 |
5.6 |
5.6 |
2.4 |
3.6 |
4.0 |
水温 (℃) |
9.9 |
8.4 |
7.7 |
11.2 |
8.6 |
6.6 |
13.8 |
7.3 |
6.6 |
19.6 |
15.0 |
10.2 |
19.1 |
16.1 |
11.7 |
18.2 |
15.0 |
14.8 |
16.6 |
14.8 |
14.3 |
9.8 |
9.3 |
8.7 |
4.2 |
4.5 |
4.6 |
2.4 |
2.5 |
2.9 |
1.6 |
2.2 |
2.4 |
2.0 |
2.2 |
2.4 |
採取水深 (m) |
0.5 |
30.0 |
64.0 |
0.5 |
30.0 |
64.0 |
0.5 |
30.0 |
59.0 |
0.5 |
20.0 |
46.0 |
0.5 |
25.0 |
45.0 |
0.5 |
25.0 |
43.0 |
0.5 |
20.0 |
40.0 |
0.5 |
20.0 |
40.0 |
0.5 |
20.0 |
42.0 |
0.5 |
25.0 |
56.0 |
0.5 |
25.0 |
49.0 |
0.5 |
20.0 |
44.0 |
全水深 (m) |
65.0 |
|
|
65.0 |
|
|
60.0 |
|
|
47.0 |
|
|
46.0 |
|
|
44.0 |
|
|
41.0 |
|
|
41.0 |
|
|
43.0 |
|
|
56.0 |
|
|
50.0 |
|
|
45.0 |
|
|
透明度 (m) |
0.80 |
|
|
1.20 |
|
|
2.00 |
|
|
1.10 |
|
|
|
|
|
0.50 |
|
|
1.00 |
|
|
1.60 |
|
|
1.50 |
|
|
2.90 |
|
|
|
|
|
1.50 |
|
|
外観 |
無色澄明 |
濃白濁 |
濃白濁 |
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 |
白濁 |
濃白濁 |
無色澄明 |
濃白濁 |
濃白濁 |
白濁 |
白濁 |
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 |
6.8 |
6.8 |
7.1 |
6.8 |
6.7 |
7.1 |
6.7 |
6.6 |
6.9 |
6.7 |
6.7 |
7.2 |
7.0 |
6.9 |
7.1 |
7.0 |
7.0 |
7.1 |
7.0 |
7.0 |
7.1 |
7.1 |
7.1 |
7.1 |
7.1 |
7.1 |
6.9 |
6.8 |
6.9 |
7.0 |
7.0 |
7.0 |
6.8 |
6.8 |
6.8 |
DO (mg/l) |
11.2 |
12.1 |
9.9 |
10.3 |
10.3 |
9.8 |
10.0 |
8.6 |
8.2 |
9.2 |
9.1 |
6.4 |
9.8 |
9.4 |
8.8 |
8.9 |
9.7 |
9.6 |
9.3 |
9.7 |
10.2 |
11.1 |
10.6 |
9.8 |
11.3 |
12.0 |
11.2 |
12.4 |
10.1 |
11.5 |
13.2 |
13.0 |
12.7 |
12.4 |
12.5 |
12.1 |
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 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.6 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.7 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.7 |
0.5 |
0.9 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
COD (mg/l) |
1.6 |
2.0 |
4.2 |
1.8 |
1.4 |
1.6 |
1.0 |
1.7 |
1.2 |
1.5 |
1.9 |
2.0 |
1.4 |
3.2 |
3.5 |
2.9 |
2.2 |
1.9 |
2.1 |
2.0 |
1.8 |
2.2 |
1.4 |
1.4 |
1.7 |
1.2 |
1.2 |
1.0 |
1.0 |
1.0 |
1.1 |
0.9 |
2.1 |
1.6 |
1.5 |
1.6 |
SS (mg/l) |
5 |
12 |
86 |
5 |
6 |
5 |
1 |
2 |
7 |
3 |
10 |
34 |
5 |
11 |
15 |
16 |
12 |
13 |
7 |
8 |
6 |
16 |
6 |
6 |
11 |
12 |
4 |
1 |
2 |
2 |
2 |
1 |
18 |
5 |
4 |
6 |
大腸菌群数 (MPN/100ml) |
2.3E+01 |
4.9E+01 |
1.3E+01 |
3.3E+02 |
4.9E+01 |
2.3E+01 |
3.3E+01 |
3.3E+01 |
7.8E+00 |
2.3E+01 |
1.3E+03 |
7.9E+01 |
1.3E+03 |
3.3E+03 |
1.7E+03 |
4.9E+02 |
4.9E+02 |
1.7E+03 |
1.4E+03 |
3.3E+03 |
7.9E+02 |
1.3E+03 |
3.3E+02 |
2.4E+02 |
3.3E+02 |
7.9E+01 |
4.9E+01 |
7.8E+00 |
7.8E+00 |
6.8E+00 |
2.0E+00 |
2.0E+00 |
7.8E+00 |
1.3E+02 |
3.3E+01 |
1.3E+02 |
全窒素 (mg/l) |
|
|
|
0.32 |
0.29 |
0.30 |
|
|
|
0.28 |
0.28 |
0.35 |
|
|
|
0.33 |
0.30 |
0.29 |
|
|
|
0.41 |
0.30 |
0.33 |
|
|
|
0.34 |
0.29 |
0.30 |
|
|
|
0.57 |
0.57 |
0.58 |
全燐 (mg/l) |
|
|
|
0.014 |
0.011 |
0.012 |
|
|
|
0.018 |
0.021 |
0.046 |
|
|
|
0.016 |
0.010 |
0.010 |
|
|
|
0.034 |
0.016 |
0.016 |
|
|
|
0.012 |
0.010 |
0.009 |
|
|
|
0.012 |
0.012 |
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) |
|
|
|
< 0.005 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
0.006 |
|
|
|
|
|
< 0.005 |
|
|
|
|
|
0.005 |
|
|
|
|
|
0.007 |
|
|
六価クロム (mg/l) |
|
|
|
< 0.040 |
|
|
|
|
|
< 0.040 |
|
|
|
|
|
< 0.040 |
|
|
|
|
|
< 0.040 |
|
|
|
|
|
< 0.040 |
|
|
|
|
|
< 0.040 |
|
|
砒素 (mg/l) |
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
|
|
|
< 0.002 |
|
|
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) |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
|
|
|
< 2.0E+00 |
< 2.0E+00 |
< 2.0E+00 |
透視度 |
> 30.0 |
> 30.0 |
12.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
> 30.0 |
14.0 |
> 30.0 |
28.0 |
25.0 |
26.0 |
> 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) |
|
|
|
0.15 |
0.17 |
0.17 |
|
|
|
0.17 |
0.17 |
0.20 |
|
|
|
0.18 |
0.16 |
0.16 |
|
|
|
0.15 |
0.12 |
0.10 |
|
|
|
0.19 |
0.20 |
0.19 |
|
|
|
0.25 |
0.24 |
0.25 |