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 |
1992.05.20 |
1992.05.20 |
1992.05.20 |
1992.07.09 |
1992.07.09 |
1992.07.09 |
1992.09.09 |
1992.09.09 |
1992.09.09 |
1992.11.12 |
1992.11.12 |
1992.11.12 |
1993.01.20 |
1993.03.10 |
| 採取時刻 |
1015 |
1115 |
1135 |
0915 |
1000 |
1015 |
1005 |
1045 |
1105 |
1043 |
1115 |
1133 |
1300 |
1000 |
| 天候 |
2 |
2 |
2 |
4 |
2 |
2 |
雨 |
雨 |
雨 |
4 |
雨 |
雨 |
雪 |
雪 |
| 気温 (℃) |
18.0 |
20.0 |
20.5 |
19.5 |
20.7 |
21.2 |
17.4 |
17.4 |
17.4 |
10.2 |
10.5 |
10.5 |
-1.2 |
1.0 |
| 水温 (℃) |
10.3 |
8.4 |
8.3 |
21.8 |
9.0 |
7.8 |
18.2 |
8.5 |
7.4 |
9.2 |
9.1 |
8.6 |
1.0 |
3.3 |
| 採取水深 (m) |
0.5 |
30.0 |
64.0 |
0.5 |
25.0 |
50.0 |
0.5 |
25.0 |
48.0 |
0.5 |
25.0 |
56.0 |
0.5 |
0.5 |
| 全水深 (m) |
65.0 |
65.0 |
65.0 |
51.0 |
51.0 |
51.0 |
49.0 |
49.0 |
49.0 |
57.0 |
57.0 |
57.0 |
|
|
| 透明度 (m) |
<1000 |
|
|
2.000 |
|
|
<1000 |
|
|
2.000 |
|
|
|
|
| pH |
7.1 |
7 |
7 |
7.6 |
6.9 |
6.8 |
7.1 |
6.5 |
6.4 |
7.1 |
7.1 |
7 |
7.1 |
6.8 |
| DO (mg/l) |
11 |
10 |
10 |
8.6 |
9 |
7.5 |
8.3 |
4.4 |
4.2 |
10 |
10 |
9.6 |
12 |
12 |
| BOD (mg/l) |
0.8 |
0.8 |
0.5 |
2 |
0.7 |
0.5 |
1 |
0.9 |
0.9 |
0.8 |
0.5 |
0.4 |
0.6 |
0.6 |
| COD (mg/l) |
2.1 |
1.9 |
1.3 |
3.6 |
1.6 |
1.9 |
4.3 |
1.9 |
2.1 |
2.3 |
2.2 |
2 |
1.5 |
1.2 |
| SS (mg/l) |
14 |
16 |
27 |
4 |
4 |
4 |
12 |
6 |
10 |
2 |
2 |
3 |
1 |
4 |
| 大腸菌群数 (MPN/100ml) |
2.30E+01 |
1.70E+01 |
1.70E+01 |
0.00E+00 |
5.00E+00 |
0.00E+00 |
7.90E+02 |
4.90E+02 |
7.90E+01 |
1.70E+02 |
7.90E+01 |
2.30E+01 |
5.00E+00 |
0.00E+00 |
| 全窒素 (mg/l) |
0.51 |
|
|
0.51 |
|
|
0.57 |
|
|
0.35 |
|
|
0.33 |
0.46 |
| 全燐 (mg/l) |
0.031 |
|
|
0.018 |
|
|
0.031 |
|
|
0.012 |
|
|
0.007 |
0.012 |
| 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 |
|
|
< 0 |
< 0 |