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 |
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 |
1010 |
1010 |
1010 |
0930 |
0940 |
0945 |
1005 |
1010 |
1015 |
1000 |
1005 |
1010 |
0945 |
0950 |
0955 |
1010 |
1015 |
1018 |
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 (℃) |
14.5 |
14.5 |
14.5 |
17.0 |
17.0 |
17.0 |
23.5 |
23.5 |
23.5 |
23.0 |
23.0 |
23.0 |
19.0 |
19.0 |
19.0 |
17.5 |
17.5 |
17.5 |
水温 (℃) |
14.1 |
7.9 |
7.9 |
16.8 |
7.7 |
8.1 |
19.3 |
8.5 |
9.0 |
22.9 |
9.2 |
8.5 |
8.9 |
8.4 |
15.6 |
9.2 |
14.3 |
14.2 |
採取水深 (m) |
0.0 |
17.5 |
31.5 |
0.0 |
30.6 |
17.0 |
0.0 |
30.6 |
17.0 |
0.0 |
29.0 |
15.5 |
17.0 |
9.5 |
0.0 |
17.0 |
0.0 |
9.5 |
全水深 (m) |
35.00 |
35.00 |
35.00 |
34.00 |
34.00 |
34.00 |
34.00 |
34.00 |
34.00 |
31.00 |
31.00 |
31.00 |
19.00 |
19.00 |
19.00 |
19.00 |
19.00 |
19.00 |
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 |
00 |
00 |
00 |
00 |
00 |
茶褐色 |
00 |
00 |
00 |
00 |
00 |
臭気 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
01 |
pH |
7.2 |
7.0 |
7.2 |
7.1 |
6.9 |
7.0 |
7.3 |
6.7 |
6.9 |
7.4 |
6.6 |
6.7 |
6.4 |
6.5 |
7.2 |
6.4 |
7.5 |
7.6 |
DO (mg/l) |
9.2 |
9.9 |
10.0 |
9.4 |
9.1 |
9.6 |
9.0 |
8.2 |
9.4 |
8.8 |
7.5 |
8.6 |
4.6 |
4.9 |
9.8 |
4.6 |
10.0 |
10.0 |
COD (mg/l) |
1.7 |
1.2 |
1.1 |
1.5 |
1.2 |
0.7 |
1.8 |
0.7 |
0.8 |
1.8 |
1.1 |
0.9 |
3.5 |
1.9 |
1.9 |
3.0 |
2.7 |
3.1 |
SS (mg/l) |
2 |
3 |
2 |
2 |
8 |
2 |
6 |
2 |
2 |
3 |
1 |
6 |
17 |
9 |
5 |
9 |
3 |
2 |
大腸菌群数 (MPN/100ml) |
1.3E+01 |
|
|
2.4E+02 |
|
|
3.3E+01 |
|
|
1.3E+02 |
|
|
|
|
7.9E+01 |
|
7.9E+01 |
|
全窒素 (mg/l) |
0.08 |
|
|
0.10 |
|
|
0.27 |
|
|
0.12 |
|
|
|
|
0.14 |
|
0.08 |
|
全燐 (mg/l) |
0.006 |
|
|
0.015 |
|
|
0.023 |
|
|
0.018 |
|
|
|
|
0.024 |
|
0.026 |
|
クロロフィル-a (ug/l) |
2.3 |
|
|
2.8 |
|
|
3.5 |
|
|
4.1 |
|
|
|
|
17.0 |
|
7.3 |
|
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 |
|
ハリケイソ |
|