File:The future water supply of San Francisco; a report to the Honorable the secretary of the interior and the Advisory board of engineers of the United States army (1912) (14586592668).jpg

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Identifier: cu31924004975805 (find matches)
Title: The future water supply of San Francisco; a report to the Honorable the secretary of the interior and the Advisory board of engineers of the United States army
Year: 1912 (1910s)
Authors: Spring Valley water company, San Francisco
Subjects: Water-supply
Publisher: (San Francisco, Printed by the Rincon publishing company
Contributing Library: Cornell University Library
Digitizing Sponsor: MSN

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339 ^^™ ^M ~~ ■ ~~ ^~ ^~ ^^^ ^^^ ^* 1 \ \ \ I \ >5^ ^ ^ N ,^ ^ 5 \ v \ \ ^ 2- .<o S^ < <o \ \ ^ \ \ C -w u -\ <. ^) ■!^ y <-:: A « »V :\ -1 \^ 1 C.1 <^ \ ^ ^\ V ■ ai r:?^ :^ \. \ r t ^ 5 0( > V ^N > r \ •>- ^ ^ ^ ^ i9SJ ^ < li Eh 12; HH w <! S<lH« m J O m « H « O O H OixO CIS «lo PO HO <!Wo 340
Text Appearing After Image:
shomnoLocaf/on of Gag/no iSfaf/on^A/amec/c7 Sysfem P/cffeB36 STREAM GAGINGS ARE BEING MADE AT MANY PLACES IN THE ALAMEDA SYSTEM. 341 342 THE FUTURE WATER SUPPLY OP SAN FRANCISCO. a time curve (Plate B 32) was very carefullydrawn as a mean of all observations, the co-ordinates of each observation being representedby depth of the gage and time required totraverse the 150-foot course. From this timecurve the maximum surface velocities werecomputed for various depths as indicated bygage rod readings. Stream Section Very Favorablefor Good Results. A glance at the stream bed sections (PlateB 33) through which the gagings were taken,will show that sections numbered 2 and 3 arevery nearly identical in general conformitywhile sections numbered 1 and 4 differmaterially in shape. It was considered logical tobuild up a composite of these sections givingdouble weight to sections 2 and 3 and correspond-ingly smaller significance to sections 1 and 4. Af-ter building up this composite section, theare

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Flickr tags
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  • bookid:cu31924004975805
  • bookyear:1912
  • bookdecade:1910
  • bookcentury:1900
  • bookauthor:Spring_Valley_water_company__San_Francisco
  • booksubject:Water_supply
  • bookpublisher:_San_Francisco__Printed_by_the_Rincon_publishing_company
  • bookcontributor:Cornell_University_Library
  • booksponsor:MSN
  • bookleafnumber:382
  • bookcollection:cornell
  • bookcollection:americana
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29 July 2014
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This image was originally posted to Flickr by Internet Archive Book Images at https://flickr.com/photos/126377022@N07/14586592668. It was reviewed on 23 September 2015 by FlickreviewR and was confirmed to be licensed under the terms of the No known copyright restrictions.

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