河川の取り組み
River Project
第2回由良川水系流域委員会資料
2.その他 参考資料について
6.水質経年変化
●BOD75%値(下流)

●BOD75%値(中流)

●BOD75%値(上流)


●BOD75%値(中流)

●BOD75%値(上流)

●各年のBOD75%値
河川名 | 由良川 | 由良川 | 由良川 | 由良川 | 土師川 | 由良川 | 由良川 | 由良川 |
---|---|---|---|---|---|---|---|---|
観測地 点名 |
由良川橋 | 波美橋 | 筈巻橋 | 音無瀬橋 | 土師橋 | 以久田橋 | 山家橋 | 安野橋 |
S47 | 1.0 | 2.0 | ||||||
S48 | 1.3 | 1.4 | 1.1 | 0.9 | ||||
S49 | 2.3 | 1.4 | 1.6 | 1.8 | 2.4 | |||
S50 | 1.2 | 1.4 | 1.8 | 1.6 | 1.5 | 0.9 | 0.8 | |
S51 | 1.3 | 1.6 | 1.4 | 1.2 | 1.4 | 1.0 | 0.7 | 1.5 |
S52 | 1.2 | 0.9 | 1.0 | 1.0 | 1.2 | 1.4 | 0.8 | 1.3 |
S53 | 1.2 | 0.9 | 1.2 | 1.2 | 1.3 | 1.1 | 0.8 | 1.6 |
S54 | 0.8 | 1.1 | 1.1 | 1.1 | 1.0 | 0.8 | 0.6 | 1.6 |
S55 | 0.9 | 1.1 | 1.0 | 1.0 | 1.1 | 0.8 | 0.8 | 1.4 |
S56 | 1.1 | 1.9 | 1.4 | 1.1 | 1.8 | 1.1 | 0.8 | 0.6 |
S57 | 1.0 | 1.0 | 1.1 | 0.9 | 0.9 | 0.9 | 0.7 | 1.2 |
S58 | 0.9 | 1.1 | 1.0 | 0.9 | 1.0 | 0.8 | 0.6 | 1.2 |
S59 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.2 | 0.8 | 0.6 |
S60 | 0.7 | 0.9 | 0.7 | 0.8 | 0.7 | 0.7 | 0.7 | 0.6 |
S61 | 0.9 | 1.0 | 1.0 | 1.1 | 0.9 | 0.9 | 1.4 | 0.6 |
S62 | 0.7 | 0.6 | 1.1 | 0.8 | 0.8 | 0.6 | 1.1 | 0.6 |
S63 | 0.7 | 0.7 | 0.9 | 0.7 | 0.8 | 0.6 | 0.8 | 0.5 |
H1 | 0.7 | 1.1 | 1.0 | 0.9 | 1.0 | 0.9 | 0.7 | 0.6 |
H2 | 1.0 | 1.0 | 1.1 | 0.9 | 0.8 | 0.8 | 0.7 | 0.5 |
H3 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.6 | 0.7 | 0.5 |
H4 | 0.8 | 0.9 | 0.9 | 0.7 | 0.9 | 0.7 | 0.8 | 0.7 |
H5 | 0.9 | 0.9 | 0.9 | 1.0 | 0.8 | 0.9 | 0.9 | 0.5 |
H6 | 1.1 | 1.5 | 1.7 | 1.0 | 1.2 | 1.3 | 0.9 | 0.6 |
H7 | 0.8 | 1.0 | 1.1 | 0.8 | 1.0 | 1.0 | 0.9 | 0.6 |
H8 | 0.7 | 0.8 | 0.9 | 0.7 | 1.0 | 0.8 | 1.6 | 0.5 |
H9 | 0.7 | 0.7 | 0.7 | 0.8 | 0.8 | 0.8 | 1.2 | 0.5 |
H10 | 0.6 | 0.7 | 0.8 | 0.7 | 0.7 | 0.7 |