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"From the reservoir, whether constructed on a large scale to hold storm water or of small size to receive the discharge from a pump, there must be provided suitable means of conducting the water to the land. The simplest, cheapest, and most widely used is the open earth ditch built in such a way as to have a gentle, uniform, grade sufficiently great for the water to flow with rapidity and yet not to wash the banks."—Government Printing Office, 1897

Section of Field and Lateral Ditch

"From the reservoir, whether constructed on a large scale to hold storm water or of small size to receive…