Report Upon New York's Water Supply: With Particular Reference to the Need of Procuring Additional Sources and Their Probable Cost, with Works Constructed Under Municipal Ownership Made to Bird S. Coler, ComptrollerMartin B. Brown Company, printers, 1900 - 593 էջ |
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Report Upon New York's Water Supply: With Particular Reference to the Need ... John Ripley Freeman Ամբողջությամբ դիտվող - 1900 |
Report Upon New York's Water Supply: With Particular Reference to the Need ... John Ripley Freeman Ամբողջությամբ դիտվող - 1900 |
Report Upon New York's Water Supply: With Particular Reference to the Need ... John Ripley Freeman Ամբողջությամբ դիտվող - 1900 |
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200 million gallons 24 hours average basin Bronx Brooklyn capacity cent city limits clean consumption Creek crest Cretaceous Croton Aqueduct Croton Dam Croton River Croton Watershed cut and cover depth Diagram diameter diversion drainage area elevation Engineer Esopus Esopus Creek estimate feet per second filtration flow gallons per 24 gallons per day gallons per inhabitant gallons per square gauge geological Housatonic Hudson inches inhabitant per day land leakage ledge Manhattan maps masonry measured meters Mile river million gallons month Moodna Creek Old Croton Old Croton Aqueduct Park Hill Pond possible present probably proposed pumping quantity rainfall Ramapo Ramapo river reconnaissance records safe yield Salisbury Mills service pipes slope square miles steel pipe storage reservoirs stream Sudbury Table Ten Mile river tion Total cost tunnel valley velocity Wallkill waste water supply water surface water-power yellow gravel York
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Էջ 563 - ... has become more or less stained with iron oxide and is known by geologists as the yellow gravel. From the western end of Long Island the yellow gravel extends southwestward across Staten Island and the lowlands of New Jersey; and it is to be regarded as one of the most important as well as one of the latest formations of the Atlantic seaboard. It belongs chiefly, at least, to the Lafayette division of the Neocene period; while the underlying blue clay and gray gravel may be referred, provisionally,...
Էջ 229 - Given this mass-curve, to find the greatest possible uniform rate of draft, regardless of practical limitation of storage capacity and regardless of the evaporation loss that would follow increase of storage. This is a little less than the arithmetic average of all the monthly averages, because these do not take account of leaving the storage in the same condition at the end as at the beginning of the term. The time average is found by drawing the line AB tangent to the two summits A and B, near...
Էջ 364 - Crosby, of the Department of Geology at the Massachusetts Institute of Technology, and...
Էջ 70 - Quantity shown in gallons per inhabitant per day. Showing also the effect of meters in restraining the natural increase of consumption in recent years. The curve ABC is not an exact average, but is drawn as summing up the general tendency and as a convenient guide to the eye in studying the comparative effect of various percentages of meters in the different cities.
Էջ 568 - This may be defined as a group of two or three horizons in heavy gravel and cobble strata near the base of the Plastic Clays, which clays are variously colored white, yellow and red, or they are mottled in all these colors. The color of the water-yielding gravels may be defined as a yellowish white in contrast with those of the next higher horizon, which are of a bluish white. SECOND.
Էջ 49 - Average of all dwellings supplied by meter. All houses supplied with modern plumbing. These families have but one faucet each. These families have but one faucet each. The most expensive houses in the city. Average class of houses, generally having bath and water-closet.
Էջ 568 - ... midway in the clay marl or Matawan formation. It is not, so far as yet known, more than a few feet thick, but yields mostly a satisfactory quality of water, often doing so at points where the water from the next higher horizon, as is occasionally the case, proves somewhat too irony.
Էջ 569 - NJ, some of the upper of these horizons would not be met with at all points, but southward from Barnegat if a well were drilled anywhere sufficiently deep it would probably find all of them, unless perhaps a few of the thinner ones, which have as yet only been developed in the central and western side of the coastal plain, might not continue as open sands so far seaward. The following table gives, where known, the approximate interval in feet from the top of one horizon to the top of the next : WATER...
Էջ 586 - Notes on the Geology of the Sites of the Proposed Dams in the Valleys of the Housatonic and Ten Mile Rivers.
Էջ 13 - ... computations heretofore relied upon gave too large a flow by about 10 per cent." "An investigation by experiments on full-size models of the Croton dam crests proves that the formula used heretofore for computing the water wasted exaggerated this flow about 9 per cent." " A gauging of the flow of the new aqueduct made (at my request) by the same assistant engineer, with the same current meter by which the new aqueduct was originally gauged, proves that this has suffered an impairment of about...