Report of the Commission on additional water supply for the city of New York: made to Robert Grier Monroe, commissioner of water supply, gas and electricity ... November 30, 1903 (Google eBook)
M. B. Brown co., printers, 1904 - Nature - 980 pages
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500 million gallons acres additional supply alkalinity amount of chlorine analyses aqueduct Ashokan Reservoir average basin Billings Reservoir boilers Borough Brooklyn capacity cent chlorine City Clinton Hollow color Commission concrete construction cost Croton water cubic yards cut and cover depth Diagram drainage area east elevation Engineer entire Esopus Creek estimated excavation feet filters filtration Fishkill Creek flow line gallons per day Geological ground water hardness high water line Hill View Hudson River inches increase Lake located Long Island Massapequa maximum microscopic organisms million gallons daily normal chlorine number of bacteria odor plant pollution Pond population portion Poughkeepsie present Pumping Station rainfall Ridgewood Ridgewood Reservoir rock Rondout Creek sand sanitary Schoharie Creek shallow shown Silvernails slopes soil Spring Creek square miles storage reservoirs Stormville stream surface water Survey Table tion Total tributaries tunnel turbidity typhoid fever Wappinger Creek watershed York
Page 493 - Observations on the flow of rivers in the vicinity of New York City, by HA Pressey.
Page 697 - ... to a sufficient depth, with a considerable slope. It should be placed where nothing can obstruct the descending snow from entering it, and where no drift snow may be blown into it. During a continued snow storm the snow may be occasionally pressed down into it. The contents of the vessel must at proper times be melted over a fire, and the water produced poured into the gauge to ascertain its contents, which must be entered in the gauge column of the register.
Page 288 - Contractor will be subject to inspection and rigorous tests; and if found of improper quality will be branded, and must be immediately removed from the work; the character of the tests to be determined by the Engineer. The Contractor shall, at all times, keep in store at some convenient point in the vicinity of the work, a...
Page 704 - A smaller cvlinder is also provided, which gives thousandths of inches, and may serve, in case of accident, as a substitute for the larger cylinder. The rain gauge is placed in a cask sunk in the earth, with its mouth near the level of the ground. " The snow gauge is a cylinder of zinc of the same diameter as the mouth of the rain gauge. The...
Page 388 - ... to-day in every Southern State where new railroads are building, various manufacturing enterprises springing up, and vast mining interests being developed. The steady flow of capital into all those channels is greatly due to their influence. There is more money drifting that way to-day than ever before, and the time will soon come, if it is not already here, when the sentiment to which I have responded will admit of transposition, and we can with as much propriety toast " Wall Street in the South,"...
Page 765 - ... the lowlands to the westward, including the Champlain and upper Hudson valleys receive a somewhat deficient supply as compared with that of the State as a whole. A marked increase of rainfall is again found in the Adirondack highlands, and beyond these a decrease in the St. Lawrence valley. Sea-winds from the southeast find no obstruction on the immediate coast of New York ; but passing inland meet the abrupt hill ranges of the southeastern counties, and probably give to each a copious rainfall...
Page 3 - ... of the Boroughs of Greater New York up to such time as shall seem best to the Commission, giving due consideration to the probable increase of population, and its consumption per capita and of the reduction of waste by the efficient execution of the methods therefor proposed by the Commission. (C) The future source of supply for the City which shall be most available from the point of view of cost and quality of water, to meet the probable future conditions of the City, with the estimated cost...
Page 288 - Contractor shall, at all times, keep in store at some convenient point in the vicinity of the work, a sufficient quantity of cement to allow ample time for the tests to be made without delay to the work of construction. The Engineer shall be notified at once of each delivery of cement. It shall be stored in a tight building, and each cask must be raised several inches above the ground, by blocking or otherwise.
Page 289 - All exposed surfaces of finished or unfinished work shall be kept constantly moist by sprinkling with clean water at short intervals, unless otherwise directed during cold weather, or by covering with moistened burlap, or by such other means as shall be approved, and this moistening shall be continued until the permanent covering is in place or until, in the opinion of the engineer, the concrete has sufficiently hardened. The contractor shall not permit walking upon the concrete until it has set...
Page 704 - New York. The rain gauge is an inverted cone of sheet zinc, of which the area of the base is exactly one hundred square inches. This cone or funnel terminates in a tube which carries the water into a receiving vessel. The water which has fallen is measured by pouring it from the gauge into a cylinder, so graduated as to indicate hundredths of inches.