Question

The irrigation structure called is constructed at a position where a canal has to cross above natural drainage

Answer 1

Answer:

A cross drainage work is a structure which is constructed at the crossing of a canal and a natural drain, so as dispose of drainage water without ... (1) By passing the canal over the drainage. this may be accomplished either through (i) an ... under syphonic action, the structure is known as Syphon Aqueduct .