測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 50501 |
豊沢ダム貯水池 |
Ｌ‐７（ダムサイト） |
A |
測定結果
| 採取年月日 |
1991.05.14 |
1991.05.14 |
1991.05.14 |
1991.06.11 |
1991.06.11 |
1991.06.11 |
1991.07.29 |
1991.07.29 |
1991.07.29 |
1991.08.26 |
1991.08.26 |
1991.08.26 |
1991.09.10 |
1991.09.10 |
1991.09.10 |
1991.10.22 |
1991.10.22 |
1991.10.22 |
| 採取時刻 |
1030 |
1030 |
1030 |
1030 |
1030 |
1030 |
1040 |
1040 |
1040 |
1050 |
1050 |
1050 |
1040 |
1040 |
1040 |
1040 |
1040 |
1040 |
| 天候 |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
晴れ |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
| 気温 (℃) |
20.0 |
20.0 |
20.0 |
23.5 |
23.5 |
23.5 |
28.0 |
28.0 |
28.0 |
23.0 |
23.0 |
23.0 |
26.0 |
26.0 |
26.0 |
10.7 |
10.7 |
10.7 |
| 水温 (℃) |
13.7 |
8.9 |
8.4 |
19.1 |
10.0 |
11.2 |
21.0 |
11.3 |
11.5 |
23.5 |
9.0 |
10.1 |
22.2 |
9.6 |
10.1 |
12.4 |
11.0 |
8.0 |
| 採取水深 (m) |
0.0 |
18.0 |
32.0 |
0.0 |
16.0 |
30.0 |
0.0 |
17.0 |
31.0 |
0.0 |
16.0 |
29.0 |
0.0 |
12.0 |
22.0 |
0.0 |
12.0 |
20.0 |
| 全水深 (m) |
35.0 |
35.0 |
35.0 |
33.5 |
33.5 |
33.5 |
35.0 |
35.0 |
35.0 |
33.0 |
33.0 |
33.0 |
25.0 |
25.0 |
25.0 |
25.0 |
25.0 |
25.0 |
| pH |
7.3 |
7.1 |
6.9 |
7.2 |
7.1 |
6.9 |
7.9 |
7.1 |
6.7 |
7.5 |
6.7 |
6.6 |
7.4 |
6.7 |
6.6 |
7.3 |
7 |
6.6 |
| DO (mg/l) |
11 |
10 |
9.8 |
9.4 |
9.4 |
8.1 |
10 |
8.9 |
7.2 |
8.5 |
6.6 |
6.3 |
8.9 |
7.3 |
6.3 |
10.7 |
10 |
6.1 |
| COD (mg/l) |
1.8 |
1.7 |
4.1 |
2.4 |
1.9 |
2.9 |
1.5 |
0.5 |
1.3 |
2.5 |
1.3 |
2.3 |
3.9 |
2.2 |
2.2 |
2.6 |
2.3 |
1.8 |
| SS (mg/l) |
2 |
3 |
3 |
< 1 |
1 |
4 |
1 |
1 |
17 |
2 |
1 |
17 |
2 |
2 |
6 |
2 |
8 |
16 |
| 大腸菌群数 (MPN/100ml) |
1.1E+01 |
|
|
1.7E+01 |
|
|
7.9E+01 |
|
|
4.9E+01 |
|
|
4.9E+01 |
|
|
1.3E+02 |
|
|
| 全窒素 (mg/l) |
0.22 |
|
|
0.1 |
|
|
0.15 |
|
|
0.15 |
|
|
0.39 |
|
|
0.37 |
|
|
| 全燐 (mg/l) |
0.006 |
|
|
0.007 |
|
|
0.012 |
|
|
0.012 |
|
|
0.015 |
|
|
0.016 |
|
|