Le mar. 4 juin 2019 à 14:07, Peter Elderson <pelder...@gmail.com> a écrit :
> All the waterways can drain, transport water/people/goods, and irrigate, > as needed. > Transportation is not transmission. Transportation of water over a canal means loading water into boats and send them over the canal. Those canals aren't intended to transmit water like the Los Angeles Aqueduct does. Many headrace or transportation canals can also serve a water discharge where local drains end. Drainage can't be the first usage because if drainage water stops, transportation, navigation and irrigation should still be possible. Then, the two main usages can be irrigation and transportation according to your explanations Am I wrong?
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