The Expanded Narrative
A historic flood drainage system built in the eleventh century CE to protect the urban fabric from floods, consisting of a main channel 3.5 km long.
Engineering and function
A historic flood drainage system built in the eleventh century CE to protect the urban fabric from floods. It consists of a main channel 3.5 km long and 4-6 metres deep, branching into 72 secondary channels beneath the alleys.
Civilisational value
- Protecting over 6,000 heritage buildings from flood flow
- An urban route integrated with pedestrian movement via 15 stone bridges
- A structural component of the city’s planning defining the direction of alleys and houses
- A natural ventilation system for the city through air movement in the channel
Built in the 11th century CEA main channel 3.5 km long72 secondary channelsProtecting 6,000 heritage buildings
