The Passaic flood of 1903 . excess of the run-off for th(i flood of October, 1903. It was found imprac-ticable on the Rockaway reservoir site to provide for a storage greater than 6 the Wanaque the amount which can he stored falls slightly under 8 inches, whileon the Ramapo it is possible to obtain only oi inches, by reason of the fact tliat witha greater storage capacity the slack water would reach into New York State. Theeconomical height for a dam at the lower end of the Great Piece Meadow, if suchdam is provided with fixed discharge openings Avhich will carry a maximum out-flow o
The Passaic flood of 1903 . excess of the run-off for th(i flood of October, 1903. It was found imprac-ticable on the Rockaway reservoir site to provide for a storage greater than 6 the Wanaque the amount which can he stored falls slightly under 8 inches, whileon the Ramapo it is possible to obtain only oi inches, by reason of the fact tliat witha greater storage capacity the slack water would reach into New York State. Theeconomical height for a dam at the lower end of the Great Piece Meadow, if suchdam is provided with fixed discharge openings Avhich will carry a maximum out-flow of 12,000 cubic feet per second, will provide a reservoir which will dispose of arun-off of 9 inches on the drainage area above. The following comliinations of reservoir sites, with their respective drainageareas, proportional storage, and estimated costs, give the facts necessary for finaldeductions: Site. Ramapo Wanaque Pequanac Rockaway Total ... Ramapo Wanaque Rockaway . Millington Total ... Great Piece ...Mountain View. 2,625,0003, 340, 000 The necessity to retard the flow of or provide storage for approximately 380 squaremiles of highland drainage area has been determined after careful study, and therehas been deduced an amount which may safely be expected to represent the maxi-mum for the highest floods. When the highland tributaries are sulflciently checkedthe natural storage on Great Piece Meadow in its effect upon flood control becomesmore apparent. Our investigations show that the holding back of the flo(Ml flow—that is, 8 inches run-off on approximately 380 square miles of flashy drainage areaabove Great Piece Meadow—is necessary to reduce the discharge in the river throughthe city of Paterson to 14,000 cubic feet per second for a flood similar to that of 1903. From the foregoing table, in which different reservoir projects are compared, itis seen that only the reservoirs designated as Great Piece and Mountain View willfulfill the requirements within a reasonable
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherwashi, bookyear1904
