測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 50551 |
豊沢ダム貯水池 |
Ｌ‐６ |
A |
測定結果
| 採取年月日 |
1995.05.23 |
1995.05.23 |
1995.05.23 |
1995.06.20 |
1995.06.20 |
1995.06.20 |
1995.07.11 |
1995.07.11 |
1995.07.11 |
1995.08.01 |
1995.08.01 |
1995.08.01 |
1995.09.26 |
1995.09.26 |
1995.09.26 |
1995.10.17 |
1995.10.17 |
1995.10.17 |
| 採取時刻 |
1020 |
1020 |
1020 |
0955 |
1000 |
1005 |
1020 |
1025 |
1030 |
1020 |
1025 |
1030 |
1010 |
1015 |
1020 |
1028 |
1030 |
1033 |
| 天候 |
晴れ |
晴れ |
晴れ |
雨 |
雨 |
雨 |
曇り |
曇り |
曇り |
雨 |
雨 |
雨 |
曇り |
曇り |
曇り |
晴れ |
晴れ |
晴れ |
| 気温 (℃) |
15.0 |
15.0 |
15.0 |
17.0 |
17.0 |
17.0 |
23.0 |
23.0 |
23.0 |
22.5 |
22.5 |
22.5 |
18.0 |
18.0 |
18.0 |
17.0 |
17.0 |
17.0 |
| 水温 (℃) |
13.9 |
8.6 |
8.1 |
17.4 |
8.1 |
8.7 |
20.6 |
8.7 |
10.2 |
22.3 |
9.0 |
9.6 |
9.4 |
14.2 |
15.9 |
9.9 |
14.1 |
11.9 |
| 採取水深 (m) |
0.0 |
12.5 |
22.5 |
0.0 |
21.6 |
12.0 |
0.0 |
20.7 |
11.5 |
0.0 |
19.0 |
10.5 |
8.0 |
4.0 |
0.0 |
10.8 |
0.0 |
6.0 |
| 全水深 (m) |
25.00 |
25.00 |
25.00 |
24.00 |
24.00 |
24.00 |
23.00 |
23.00 |
23.00 |
21.00 |
21.00 |
21.00 |
9.00 |
9.00 |
9.00 |
12.00 |
12.00 |
12.00 |
| 前日までの降雨状況 |
前日雨 |
前日雨 |
前日雨 |
00 |
00 |
00 |
前日雨 |
前日雨 |
前日雨 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
| 外観 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
000 |
00 |
00 |
00 |
00 |
茶褐色 |
00 |
00 |
茶褐色 |
00 |
00 |
| 臭気 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
| pH |
7.0 |
7.0 |
6.9 |
6.9 |
6.8 |
6.9 |
7.3 |
6.8 |
6.9 |
7.4 |
6.7 |
6.7 |
6.5 |
6.9 |
7.1 |
6.4 |
7.3 |
6.8 |
| DO (mg/l) |
8.9 |
10.0 |
10.0 |
9.2 |
9.3 |
9.6 |
9.1 |
9.5 |
9.7 |
8.7 |
9.2 |
9.2 |
7.0 |
9.5 |
10.0 |
5.5 |
10.0 |
8.6 |
| COD (mg/l) |
1.1 |
0.7 |
1.1 |
1.6 |
1.0 |
2.2 |
1.4 |
0.9 |
0.7 |
1.6 |
1.2 |
1.1 |
1.9 |
1.5 |
2.3 |
3.6 |
3.0 |
3.2 |
| SS (mg/l) |
2 |
1 |
4 |
2 |
2 |
3 |
2 |
21 |
4 |
3 |
3 |
2 |
42 |
7 |
5 |
16 |
3 |
6 |
| 大腸菌群数 (MPN/100ml) |
4.5E+00 |
|
|
2.4E+03 |
|
|
3.3E+01 |
|
|
2.4E+02 |
|
|
|
|
6.8E+01 |
|
2.3E+01 |
|
| 全窒素 (mg/l) |
0.07 |
|
|
0.07 |
|
|
0.10 |
|
|
0.12 |
|
|
|
|
0.11 |
|
0.08 |
|
| 全燐 (mg/l) |
0.008 |
|
|
0.015 |
|
|
0.023 |
|
|
0.019 |
|
|
|
|
0.027 |
|
0.029 |
|
| クロロフィル-a (ug/l) |
2.1 |
|
|
4.0 |
|
|
2.3 |
|
|
4.6 |
|
|
|
|
18.0 |
|
8.2 |
|
| 透視度 |
> 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 |
| プランクトン(優占種) |
ホシガタケ |
|
|
ホシガタケ |
|
|
ツツサヤツ |
|
|
ホシガタケ |
|
|
|
|
ツツサヤツ |
|
ハネウデワ |
|