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 |
1993.05.12 |
1993.05.12 |
1993.05.12 |
1993.07.14 |
1993.07.14 |
1993.07.14 |
1993.09.16 |
1993.09.16 |
1993.09.16 |
1993.11.17 |
1993.11.17 |
1993.11.17 |
1994.01.19 |
1994.03.09 |
採取時刻 |
1015 |
1102 |
1123 |
1030 |
1102 |
1116 |
1020 |
1054 |
1118 |
1100 |
1150 |
1210 |
1015 |
1000 |
天候 |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
雨 |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
雪 |
晴れ |
気温 (℃) |
19.5 |
20.5 |
20.8 |
16.0 |
16.5 |
16.6 |
21.6 |
22.3 |
22.3 |
9.7 |
10.3 |
10.5 |
-5.4 |
5.0 |
水温 (℃) |
10.6 |
10.0 |
8.7 |
18.4 |
11.4 |
7.2 |
20.6 |
16.9 |
10.0 |
11.2 |
9.8 |
9.1 |
3.0 |
2.4 |
採取水深 (m) |
0.5 |
30.0 |
64.0 |
0.5 |
25.0 |
50.0 |
0.5 |
25.0 |
47.0 |
0.5 |
30.0 |
58.0 |
0.5 |
0.5 |
全水深 (m) |
65.0 |
65.0 |
65.0 |
51.0 |
51.0 |
51.0 |
48.0 |
48.0 |
48.0 |
59.0 |
59.0 |
59.0 |
|
|
透明度 (m) |
1.900 |
|
|
2.000 |
|
|
2.100 |
|
|
5.000 |
|
|
|
|
pH |
7 |
7 |
7 |
7.5 |
6.8 |
6.7 |
7.1 |
6.7 |
6.5 |
7.1 |
7.1 |
7 |
7 |
6.6 |
DO (mg/l) |
11 |
10 |
10 |
9 |
7.8 |
5.6 |
8.5 |
6.6 |
0.7 |
9.9 |
10 |
9.7 |
11 |
14 |
BOD (mg/l) |
0.5 |
0.5 |
0.5 |
1.1 |
0.7 |
0.7 |
< 0.5 |
< 0.5 |
0.6 |
< 0.5 |
0.5 |
< 0.5 |
0.5 |
1.1 |
COD (mg/l) |
1.7 |
1.6 |
1.5 |
2.1 |
1.8 |
1.8 |
1.9 |
2.7 |
2.3 |
2.1 |
2 |
1.8 |
1.5 |
2 |
SS (mg/l) |
2 |
2 |
2 |
2 |
3 |
19 |
3 |
5 |
16 |
8 |
7 |
4 |
3 |
2 |
大腸菌群数 (MPN/100ml) |
1.7E+01 |
2.3E+01 |
2.0E+00 |
5.0E+00 |
1.3E+01 |
8.0E+00 |
3.3E+01 |
3.3E+01 |
2.3E+01 |
3.3E+01 |
7.9E+01 |
1.3E+01 |
1.7E+01 |
0.0E+00 |
全窒素 (mg/l) |
0.3 |
|
|
0.33 |
|
|
0.3 |
|
|
0.43 |
|
|
0.37 |
0.89 |
全燐 (mg/l) |
0.005 |
|
|
0.014 |
|
|
0.024 |
|
|
0.02 |
|
|
0.012 |
0.006 |
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 |
|
N |
|
|
N |
|
|
N |
|
|
N |
|
|
N |
N |
鉛 (mg/l) |
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
< 0.01 |
六価クロム (mg/l) |
< 0.04 |
|
|
< 0.04 |
|
|
< 0.04 |
|
|
< 0.04 |
|
|
< 0.04 |
< 0.04 |
砒素 (mg/l) |
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
|
|
< 0.01 |
< 0.01 |
総水銀 (mg/l) |
< 0 |
|
|
< 0 |
|
|
< 0 |
|
|
< 0 |
|
|
< 0 |
< 0 |