Diyawanna Oya

Diyawanna Oya is a significant waterway located in Sri Lanka, flowing through the Colombo district. It originates from the central hills and meanders through urban and suburban areas, eventually joining the Kelani River. The river is vital for the region’s ecology, supporting diverse wildlife and providing water for agriculture, industry, and domestic use. It also plays a key role in maintaining groundwater levels and acts as a natural drainage system, helping to prevent flooding during heavy rains. Additionally, Diyawanna Oya surrounds important ecological zones and is integrated into urban planning to balance development with environmental conservation.