Woodward, Sherman M. (Sherman Melville), 1871-, Okey, Charles W. (Charles William), 1886-, United States. Office of Experiment Stations · Washington, D.C. : U.S. Dept. of Agriculture · leaf 60
end opening below low-water line, so as to secure a water seal.This is necessary in order that the pipe may act as a siphon and that LAND DRAINAGE BY MEANS OF PUMPS. 47 hence the static head on the pump may be only the difference inlevel between the water in the canal and the water in the river.…
Drainage · Pumping machinery
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