Maduru Oya
| Dam Name | Maduru Oya |
| River | Maduru Oya |
| Near City | Polonnaruwa |
| Country | Sri Lanka |
| Year | 1983 |
| Dam Height | 43 |
| Dam Length | 1008 |
| Area(Sqkm) | 48.6 |
| Area(Polygonal) | 48.6 |
| Capital Expenditure | 596.6 |
| Depth(M) | 12.3 |
| Avg Displacement Of Water | 6886 |
| Catchment Area In Sqkm | 476 |
| Status | 3: Fair |
| Longitude | 81.212917 |
| Latitude | 7.64875 |
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