142 IRRIGATION IN UPPER INDIA. 
city of Hurdwar, where the river Ganges emerges from the hills. 
To bring the supply out to the watershed of the doab it was neces- 
carried over the canal, one being allowed a waterway of 200 feet, 
and the other 300 feet. When the torrents are not in flood, these 
Super-passages are used as bridges, 
The Indian canals are on such a large scale that lining them for 
I 
built to provide for the navi ation. These works involved heavy 
expenditure, and the falls required exceptional care and attention, 
a une engineers who designed and constructed them on the Ganges 
Canal and on the main line of the Dari Doab Canal had no pre 
cedent for such work on such a scale, . 
With regard to the carrying capacity of the canals mentioned, 
the Upper Ganges Canal was designed to discharge 6,750 cubic 8 
per second. This is more than four times the mean di ere 
the river Thames, and more than eight times the discharge of 
a In 1868-69, i 
of the rabi or cold-season crop was sollant allowed to fall 
when the rains almost entirely failed throug! 
Meena Seat <i Geel Maen Sree Dose me a 
