Jaya Ganga (Yoda Ela) low-gradient canal
Canal Jaya Ganga de pendiente mínima
- Date
- c. 460 · confidence medium
- Place
- Kala Wewa, Anuradhapura, North Central Province, Sri Lanka
- Credited to
- King Dhatusena
- Field
- Tools
What it is
Canal about 87 km long that carries water from the Kala Wewa reservoir to Anuradhapura with a gradient of barely 10-20 cm per kilometre along its first stretch. It shows very precise topographical levelling and fed dozens of smaller tanks along the way.
What it led to
- water supply for the capital and cascading irrigation
- integrated catchment management in the dry zone