Sioux City Source of Supply. An official of the city government at Sioux City, Ia., writes as follows concerning the water system there : “Sioux City gets its entire supply of water from wells. We have here two waterhearing strata; one, a gravel stratum, reached at a depth of about fifty feet from the surface, and extends about a hundred feet deeper. The other stratum from which we draw is wha; is known as the Dakota sand rock, and is reached at about a hundred and seventy feet from the surface, and goes more than a hundred feet deeper. The wells heretofore used at our mam station were eight-inch, of which we had fifteen; seven in the gravel stratum and eight in the sand rock. In addition to these wells, we had an old battery of one hundred two-inch driven wells, which art now practically out of service. This last…
