| Maduru Oya | |
| Length: | 135km (84miles) |
| Source1 Location: | Maduru Oya National Park |
| Mouth: | Indian Ocean |
| Mouth Location: | Kalkudah |
| Mouth Elevation: | Sea level |
The Maduru Oya is a major stream in the North Central Province of Sri Lanka. It is approximately 1350NaN0 in length.[1] Its catchment area receives approximately 3,060 million cubic metres of rain per year, and approximately 26 percent of the water reaches the sea, as it flows into the Indian Ocean. It has a catchment area of 1,541 square kilometres.[2]