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 |
1990.05.16 |
1990.05.16 |
1990.05.16 |
1990.07.11 |
1990.07.11 |
1990.07.11 |
1990.09.28 |
1990.09.28 |
1990.09.28 |
1990.11.14 |
1990.11.14 |
1990.11.14 |
1991.01.16 |
1991.03.06 |
| 採取時刻 |
1000 |
1055 |
1115 |
1040 |
1125 |
1145 |
1035 |
1125 |
1150 |
1210 |
1317 |
1342 |
1040 |
1030 |
| 天候 |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
雪 |
晴れ |
| 気温 (℃) |
10.3 |
10.8 |
11 |
20.3 |
20.5 |
20.5 |
14.5 |
14.9 |
15 |
16.2 |
15.8 |
15.8 |
-1 |
4.3 |
| 水温 (℃) |
12.4 |
8 |
6.6 |
17 |
12.8 |
8.8 |
16.9 |
14.5 |
10.8 |
11 |
9 |
8.5 |
1.2 |
0.6 |
| 流量 (m3/s) |
13.0 |
|
|
17.5 |
|
|
21.8 |
|
|
31.9 |
|
|
13.1 |
24.9 |
| 採取水深 (m) |
0.5 |
30 |
62 |
0.5 |
25 |
47.3 |
0.5 |
20 |
42 |
0.5 |
30 |
62 |
0.5 |
0.5 |
| 全水深 (m) |
63.0 |
63.0 |
63.0 |
48.3 |
48.3 |
48.3 |
43.0 |
43.0 |
43.0 |
63.0 |
63.0 |
63.0 |
|
|
| pH |
7 |
7 |
6.9 |
7.3 |
6.9 |
6.8 |
7.2 |
6.9 |
6.8 |
7.2 |
7 |
6.9 |
7 |
6.8 |
| DO (mg/l) |
10.4 |
10.3 |
10.1 |
6.9 |
7.3 |
6.3 |
8.2 |
7.8 |
7.9 |
9.4 |
8.5 |
8.3 |
10.8 |
10.8 |
| BOD (mg/l) |
< 0.5 |
< 0.5 |
< 0.5 |
< 0.5 |
0.7 |
0.8 |
< 0.5 |
< 0.5 |
< 0.5 |
1.3 |
0.6 |
0.5 |
0.7 |
1.3 |
| COD (mg/l) |
1.7 |
1.4 |
1.5 |
3.2 |
2.6 |
4.1 |
2.9 |
2.4 |
2.7 |
2.9 |
2.4 |
2.4 |
1.7 |
2.3 |
| SS (mg/l) |
3 |
6 |
16 |
2 |
2 |
51 |
12 |
11 |
16 |
8 |
6 |
6 |
3 |
18 |
| 大腸菌群数 (MPN/100ml) |
1.3E+01 |
8.0E+00 |
5.0E+00 |
1.7E+02 |
3.3E+01 |
3.3E+02 |
4.9E+02 |
2.4E+01 |
2.4E+01 |
2.4E+02 |
1.3E+02 |
7.9E+02 |
2.0E+00 |
4.9E+01 |
| 全窒素 (mg/l) |
0.26 |
|
|
0.34 |
|
|
0.4 |
|
|
0.38 |
|
|
0.25 |
0.61 |
| 全燐 (mg/l) |
0.012 |
|
|
0.014 |
|
|
0.039 |
|
|
0.03 |
|
|
0.01 |
0.02 |
| カドミウム (mg/l) |
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
|
|
< 0.005 |
< 0.005 |
| 全シアン (mg/l) |
N |
|
|
N |
|
|
N |
|
|
N |
|
|
N |
N |
| |
N |
|
|
N |
|
|
N |
|
|
N |
|
|
N |
N |
| 鉛 (mg/l) |
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
|
|
< 0.05 |
< 0.05 |
| 六価クロム (mg/l) |
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
0 |
0 |
| 砒素 (mg/l) |
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
< 0.02 |
| 総水銀 (mg/l) |
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
|
|
< 0.0005 |
< 0.0005 |