測定対象
| 地点統一番号 |
水域名 |
地点名 |
環境基準類型 |
| 05451 |
稗貫川 |
狼久保 |
A |
測定結果
| 採取年月日 |
2001.05.24 |
2001.06.25 |
2001.07.23 |
2001.08.20 |
2001.09.25 |
2001.10.15 |
2001.11.09 |
2001.12.10 |
2002.01.16 |
2002.02.07 |
2002.03.01 |
| 採取時刻 |
0956 |
0945 |
1000 |
0953 |
0955 |
0957 |
0956 |
0957 |
1000 |
0942 |
0940 |
| 天候 |
曇り |
曇り |
曇り |
曇り |
晴れ |
晴れ |
曇り |
晴れ |
曇り |
曇り |
晴れ |
| 気温 (℃) |
17.0 |
18.0 |
24.0 |
21.0 |
19.0 |
13.0 |
11.0 |
0.6 |
1.8 |
2.5 |
5.0 |
| 水温 (℃) |
11.0 |
13.8 |
17.0 |
15.8 |
12.4 |
10.6 |
8.3 |
2.2 |
3.0 |
3.8 |
4.1 |
| 採取水深 (m) |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
0.0 |
| 前日までの降雨状況 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
00 |
前日小雨 |
00 |
前日小雨 |
| pH |
7.5 |
7.5 |
7.5 |
7.2 |
7.5 |
7.7 |
7.3 |
7.7 |
7.5 |
7.5 |
7.5 |
| DO (mg/l) |
10.0 |
10.0 |
9.8 |
9.3 |
11.0 |
12.0 |
12.0 |
14.0 |
14.0 |
13.0 |
13.0 |
| BOD (mg/l) |
0.8 |
< 0.5 |
1.1 |
0.5 |
< 0.5 |
< 0.5 |
1.1 |
< 0.5 |
0.9 |
1.6 |
0.6 |
| COD (mg/l) |
1.6 |
1.5 |
1.5 |
1.2 |
0.8 |
1.3 |
1.3 |
1.3 |
1.0 |
1.8 |
1.5 |
| SS (mg/l) |
< 1 |
< 1 |
1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
< 1 |
1 |
| 大腸菌群数 (MPN/100ml) |
7.9E+01 |
7.9E+02 |
3.3E+03 |
1.7E+03 |
4.9E+02 |
4.9E+02 |
4.9E+02 |
3.3E+02 |
2.3E+01 |
4.9E+02 |
1.7E+02 |
| 全窒素 (mg/l) |
0.86 |
0.49 |
0.49 |
0.42 |
0.40 |
0.42 |
0.45 |
0.39 |
0.43 |
0.59 |
0.37 |
| 全燐 (mg/l) |
0.011 |
0.013 |
0.011 |
0.013 |
0.011 |
0.012 |
0.005 |
0.005 |
0.005 |
0.018 |
0.016 |
| アンモニア性窒素 (mg/l) |
< 0.1 |
< 0.1 |
0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
< 0.1 |
| クロロフィル-a (ug/l) |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
< 2 |
3 |
| 硝酸性窒素及び亜硝酸性窒素 (mg/l) |
0.41 |
0.47 |
0.39 |
0.37 |
0.37 |
0.32 |
0.39 |
0.35 |
0.38 |
0.36 |
0.35 |