water-ram

“He may believe that, by deep drainage above, his land will be dried up and rendered worthless; or, he may desire to collect the water which thus percolates, into his land, and use it for irrigation, or for a water-ram, or for the supply of his barn-yard.”

Farm drainage The Principles, Processes, and Effects of Draining Land with Stones, Wood, Plows, and Open Ditches, and Especially with Tiles

“You must go down by the brook that feeds the clicking, bubbling water-ram; up through the sugar-bush, where the young maple undergrowth closes round you like a shallow sea; next follow the faint line of an old county-road running past two green hollows fringed with wild rose that mark the cellars of two ruined houses; then by Lost Orchard, where nobody ever comes except in cider-time; then across another brook, and so into the Back Pasture.”

The Day's Work - Volume 1