A Conveyance Loss is Water loss in pipes, channels, conduits, ditches by leakage or evaporation.
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A conveyance loss is water that is lost in transit from a pipe, canal, or ditch by leakage or evaporation. Generally, the water is not available for further use; however, leakage from an irrigation ditch, for example, may percolate to a ground-water source and be available for further use.