National Geographic : 1918 Jul
THE NATIONAL GEOGRAPHIC. MAGAZINE Photograph from Edwin Levick THE DAILY THRONG IN NEWSPAPER ROW: THE MANHATTAN END OF BROOKLYN BRIDGE Brooklyn has a population of nearly two millions, and during the rush hours it seems as if the whole borough wants to cross the Brooklyn Bridge at once. Yet every East River tube and each of the other three highway bridges is doing its best to relieve the crush at City Hall Square. lems involved, it makes every other aque duct of ancient and modern times look like a pigmy project. If it were diverted into Fifth avenue, it would be a stream waist deep, flowing at the rate of four miles an hour. A day's supply would fill a cistern a hundred feet in diameter and nearly two miles deep. Each human being inhabit ing the earth could get two and a half pints of water every twenty-four hours from its capacity flow. Costing for each mile eight or ten times as much as a thoroughly modern double tracked railroad, to carry a correspond ing volume of water thirty great steel pipes four feet in diameter would have been required. Such a pipe-line would have cost twice as much as a tunnel of equal capacity through the eternal bed rock. It has been estimated that, within the city limits alone, fifteen million dollars was saved by the types of construction adopted rather than the use of steel piping, to say nothing of the tremendous cost of renewals which the latter would have entailed. THE BUILDING OE THE CATSKILL AQUEDUCT The Catskill system, with all its tre mendous capacity, is not expected to bear the whole burden of supplying the metropolis. The Croton Aqueduct, though long since outgrown, is still a sizable waterway itself, for it could supply every inhabitant of the globe with a pint and a half of water a day. As an ally it will be an invaluable aid to the Catskill stream. Between them they will have, when the Schoharie dams are built, an aggregate capacity of eight hundred million gallons a day-half a gallon per capita for the whole world.