File:First-Nineteenth annual report of the Metropolitan water and sewerage board 1901-1919 (1902) (14594383800).jpg

Identifier: firstnineteentha01mass (find matches)
Title: First-Nineteenth annual report of the Metropolitan water and sewerage board ... 1901-1919
Year: 1902 (1900s)
Authors: Massachusetts. Metropolitan Water and Sewerage Board Sprague, Henry Harrison Walcott, Henry Pickering, b. 1838
Subjects: Water-supply Sewerage
Publisher: Boston : Wright & Potter printing co., state printers
Contributing Library: University of California Libraries
Digitizing Sponsor: Internet Archive

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which it passes, it varies insize and method of construction in different parts. From the Sudbury Dam to the New York, New Haven & Hart-ford Railroad, near the Nobscot station, it was feasible to obtain afall in the masonry aqueduct of 4 feet in 5,000, and for the remain-der of the distance, down to the reservoir, a fall of only 1 foot in5,000. For the safe operation of the aqueduct it is necessary to have anequalizing reservoir near its lower end. A site suitable for such areservoir was found in a valley rather more than a mile above theterminal chamber. The reservoir and an open channel leading to ithave a total length of about a mile, and for this distance the masonryaqueduct will be omitted, the water flowing from the aqueduct intothe upper end of the open channel, and, after passing through theopen channel and reservoir, entering the lower section of theaqueduct. The following table gives the length of the different portions ofthe aqueduct, beginning at the Sudbury Dam : —
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