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 |
1991.05.15 |
1991.05.15 |
1991.05.15 |
1991.07.26 |
1991.07.26 |
1991.07.26 |
1991.09.11 |
1991.09.11 |
1991.09.11 |
1991.11.13 |
1991.11.13 |
1991.11.13 |
1992.01.22 |
1992.03.09 |
採取時刻 |
1015 |
1115 |
1135 |
0950 |
1035 |
1055 |
1005 |
1055 |
1115 |
1037 |
1120 |
1130 |
1010 |
1030 |
天候 |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
曇り |
雨 |
雨 |
雨 |
雪 |
曇り |
気温 (℃) |
20.5 |
21.6 |
22.0 |
24.0 |
24.5 |
24.7 |
18.2 |
18.7 |
18.8 |
6.0 |
5.8 |
5.7 |
2.5 |
5.2 |
水温 (℃) |
12.3 |
7.6 |
6.4 |
16.8 |
14.8 |
7.5 |
21.3 |
14.4 |
10.9 |
9.1 |
8.1 |
7.8 |
1.0 |
0.7 |
流量 (m3/s) |
24.15 |
|
|
93.15 |
|
|
12.51 |
|
|
49.71 |
|
|
14.32 |
9.12 |
採取水深 (m) |
0.5 |
30.0 |
59.0 |
0.5 |
25.0 |
50.0 |
0.5 |
25.0 |
48.0 |
0.5 |
25.0 |
55.8 |
|
|
全水深 (m) |
60.0 |
60.0 |
60.0 |
51.0 |
51.0 |
51.0 |
49.0 |
49.0 |
49.0 |
56.8 |
56.8 |
56.8 |
0.5 |
0.5 |
pH |
7.2 |
7.1 |
7 |
7.1 |
7 |
6.9 |
6.8 |
6.6 |
6.5 |
7 |
7 |
7 |
6.8 |
6.8 |
DO (mg/l) |
10 |
11 |
10 |
9.2 |
9.2 |
8.9 |
8.5 |
7.8 |
7.3 |
10 |
10 |
10 |
13 |
13 |
BOD (mg/l) |
0.7 |
< 0.5 |
< 0.5 |
1.2 |
1.9 |
0.9 |
1.1 |
0.5 |
< 0.5 |
1.2 |
< 0.5 |
0.5 |
0.6 |
1.2 |
COD (mg/l) |
1.1 |
1 |
1.2 |
2.1 |
2.5 |
3.3 |
2.3 |
1.7 |
1.8 |
2.3 |
1.3 |
1.4 |
1.2 |
2.3 |
SS (mg/l) |
2 |
3 |
7 |
6 |
13 |
19 |
2 |
4 |
9 |
7 |
2 |
3 |
2 |
6 |
大腸菌群数 (MPN/100ml) |
2.0E+00 |
2.0E+00 |
8.0E+00 |
1.7E+03 |
1.1E+03 |
1.4E+03 |
7.9E+02 |
4.9E+01 |
2.3E+01 |
2.3E+01 |
7.9E+01 |
4.9E+01 |
2.0E+00 |
1.3E+01 |
全窒素 (mg/l) |
0.26 |
|
|
0.33 |
|
|
0.27 |
|
|
0.53 |
|
|
0.29 |
0.81 |
全燐 (mg/l) |
0.009 |
|
|
0.019 |
|
|
0.015 |
|
|
0.019 |
|
|
0.009 |
0.013 |
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 |
|
|
< 0.02 |
< 0.02 |
砒素 (mg/l) |
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
|
|
< 0.02 |
< 0.02 |
総水銀 (mg/l) |
< 0 |
|
|
< 0 |
|
|
< 0 |
|
|
< 0 |
|
|
|
|