Sentences with phrase «underground irrigation channels»
On the engineering side, their developments included rainwater cropping, filtration and storage; the construction of surface and underground irrigation channels, including devices to measure the quantity of water stored (Figure 13.4)(Treacy, 1994; Wright and Valencia Zegarra, 2000; Caran and Nelly, 2006).
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Persia used a qanat system of irrigation which is essentially a gently sloping system of channels, situated underground, used to divert water from aquifers as needed.