International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
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Term No.Term Name/Term DescriptionAction
3862
Conveyance culvert
A culvert that carries canal flow under roads, railroads or other canals.
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4003
Conveyance losses, Transmission losses, Total losses, or Canal losses
The total losses by percolation and evaporation in a canal system, a branch, a distributary channel or a defined part thereof, exclusive of all designed draw-offs. Also referred to as `total losses` or `canal losses`. (See. 4898)......
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4626
Conveyance structures
Structures built to help provide general control and conveyance of the flow from the intake structures to the area to be irrigated......
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4898
Conveyance losses, or Transmission losses
1 - Losses of water in transit from the source of supply to the point of service whether in natural channels or in artificial ones, such as canals, distributaries, ditches, or watercourses. They comprise evaporation from the water surface, seepage, and incidental transpiration by vegetation growing in the water or along the banks of natural channel.....
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4923
Irrigation efficiency, Farm irrigation efficiency, Farm delivery efficiency, Water conveyance and delivery efficiency, or Overall efficiency
The ratio or percentage of the irrigation water consumed by crops of an irrigated farm, field or project to the water diverted from the source of supply. When measured at the farm head-gate it is called `farm irrigation efficiency` or `farm delivery efficiency`; when measured at the field or plot, it is designated as `field irrigation efficiency`, .....
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5010
Conveyance efficiency:
The ratio of total outflow from the system supply, to total inflow into the supply system.  
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