Contents preface (VII) introduction 1—37



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6.4.5. Regulators and Escapes
For ensuring proper distribution of irrigation water according to the adopted management policy, a suitable number of canal regulators and canal escapes must be provided on the channel network in general and on main canals and branches in particular. Canal escapes are needed for the safety as well as for regulating canal supplies in areas which have received excess rainfall.
6.4.6. Canal Outlets
Another important aspect of designing canal irrigation system is the selection of suitable type of outlet which is crucial in controlling the distribution of water and providing a link between the administration and the farmer. From the considerations of equitable distribution of water, a regulated outlet would be an ideal choice provided that it can be operated efficiently and honestly. Unfortunately, the present socio- political conditions prevailing in the country, however, do not permit such operation (8). As such, for the present, regulated outlets are ruled out. The subproportional semi-modules would be the right choice for locations just upstream of falls and regulators and also on branch canals (8). Other outlets may be of non-modular type.

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