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A drainage equation is an equation describing the relation between depth and spacing of parallel subsurface drains, depth of the watertable, depth and hydraulic conductivity of the soils. It is used in drainage design. Parameters in Hooghoudt's drainage equation. A well known steady-state drainage equation is the Hooghoudt drain spacing equation.
Fixture unit - Wikipedia ... Fixture unit
Tile drainage - Wikipedia ... Tile drainage
Drainage density
Canal lining is the process of reducing seepage loss of irrigation water by adding an impermeable layer to the edges of the trench. Seepage can result in losses of 30 to 50 percent of irrigation water from canals, so adding lining can make irrigation systems more efficient. Canal linings are also used to prevent weed growth, which can spread ...
Trench drain - Wikipedia ... Trench drain
Storm drain - Wikipedia ... Storm drain
Key to effective and efficient water pricing is a systematic process to understand: (i) the value of water in alternative uses; (ii) the private and external costs of supplying water services; and (iii) the multiple options to determine an appropriate water tariff. Within the four dimensions of water pricing (uniform versus variable tariff and ...
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