Image: Cassier's magazine (1911) (14761213754)

Description: Test shaft for construction of the Ashokan Reservoir, Ulster County, New York. Identifier: cassiersmagaz401911newy (find matches) Title: Cassier's magazine Year: circa 1905-1910, published 1911 Authors: Subjects: Engineering Publisher: New York Cassier Magazine Co. Contributing Library: Smithsonian Libraries Digitizing Sponsor: Smithsonian Libraries View Book Page: Book Viewer About This Book: Catalog Entry View All Images: All Images From Book Click here to view book online to see this illustration in context in a browseable online version of this book. Explanatory Note on Image Date: Date range for image creation reflects the New York State Legislature enacting legislation in 1905 that established the New York City Board of Water Supply, which allowed the city to acquire lands and build dams, reservoirs and aqueducts in the Catskills. Testing for suitable sites there could have begun any time after that once the Board was up to speed. Actual construction of the Ashokan Reservoir, the head of the Catskill Aqueduct, occurred between 1907 - 1915. The image was published in 1911. Text Appearing Before Image: 100,000,000 gallons daily to New York City. Included in this estimate were works of a capacity to deliver 100,000,000 gal-lons of the total daily supply to Queens and Brooklyn, and a connec-tion between Brooklyn and Rich-mond. But this enormous sum of money was not expected to accom-plish delivery to the Bronx and Man-hattan. It was suggested that one-half of the total half-billion gallons per day could be secured by expend-ing $112,000,000, and that the whole scheme could be carried to comple-tion subsequently. This general plan is now being worked out and an ad-vanced stage of construction reached. Four creeks in the Catskills and their watersheds constitute the source of supply. These are the Esopus, the Schoharie, the Rondout and the Cats-kill creeks. In the valley of the Esopus the monster reservoir is under construction. Schoharie Creek will be diverted by tunnel to empty in to this lake. It is proposed to bring the waters of Rondout and Catskill Creeks by tributary aqueducts con- THE CATSKILL AQUEDUCT 259 Text Appearing After Image: EAST TEST SHAFT ON THE HUDSON RIVER DIVISION, SHOWING MEN READY TO DESCEND SHAFT connected with the main one. The great storage lake will be known as Asho-kan reservoir. The two basins will have a total superficial area of ap-proximately 13 square miles. To drive round will be a journey of 40 miles or more. This great tank will hold about 128,000,000,000 gallons. Ashokan dam will be about 1,000 feet long on the crest and 240 feet high. Without including Rondout and Catskill Creeks, the total watershed will have an area of 485 square miles. The lake will have an aver-age depth of nearly 45 feet. Thea aqueduct will lead from Ashokan reservoir, where the hydraulic gradi-ent is 510 feet above tide across country, down hill and up hill, below the Hudson River at Storm King, up again on the eastern side, on 260 CASSIERS MAGAZINE across country to Croton reservoir, through this to Kensico reservoir. Here the hydraulic gradient has fallen to 355 feet - After a drop of 25 or 30 feet the aqueduct will continue a few miles Note About Images Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.
Title: Cassier's magazine (1911) (14761213754)
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