| Ayase River | |
|---|---|
 | |
 | |
| Location | |
| Country | Japan |
| Region | Kantō |
| Physical characteristics | |
| Source | |
| • location | Okegawa |
| Mouth | Naka River |
• location | Katsushika |
• coordinates | 35°43′22″N 139°50′33″E / 35.7229°N 139.8425°E |
| Length | 47 km (29 mi) |
| Basin size | 178 km2 (69 sq mi)[1] |
| Discharge | |
| • location | Okegawa, Saitama |
| Basin features | |
| River system | Ara river basin |
The Ayase River (綾瀬川, Ayase-gawa) is a river in Japan.
- ^ Oishi, Masao; Ikushima, Yoshimi (2008). "The Most Polluted River in Japan: Ayasegawa River ~Campaign Breaking the Worst One~" (PDF).