Attanagalu Oya
| Attanagalu Oya | |
|---|---|
Attanagalu Oya, near Dandugama | |
| Native name | අත්තනගලු ඔය (Sinhala) |
| Location | |
| Country | Sri Lanka |
| Physical characteristics | |
| Source | Kegalle District |
| • location | Galapitamada |
| 2nd source | Indurana Ela |
| • location | Indurana |
| Mouth | Negombo Lagoon |
• location | Dandugama |
• coordinates | 07°10′N 79°53′E / 7.167°N 79.883°E |
| Length | 76 km (47 mi) |
| Basin size | 727 km2 (281 sq mi) |
| Discharge | |
| • average | 40 m3/s (1,400 cu ft/s) |
| • minimum | 20 m3/s (710 cu ft/s) |
| • maximum | 100 m3/s (3,500 cu ft/s) |
The Attanagalu Oya (Sinhala: අත්තනගලු ඹය) is a river in Gampaha District, Sri Lanka.
The length of the river is approximately 76 km, with a drainage basin of 727 km2. It originates in Galapitamada area in Kegalle district and drains into the Negombo Lagoon as the Dandugam Oya. The river often causes flooding in low-lying areas in the Gampaha district.