Laserfiche WebLink
<br />I <br />I <br />i ( <br />t <br /> <br />I <br />f <br />I <br />I <br />~ <br />i <br />, <br />I <br /> <br />CONTENTS <br /> <br />Prefaee__ _ _ _ __ _ _ _ _ - _ - _ - - - - __ - ___ - - _ - -- - _ - -_ <br />Abstt':-\ct__ _ _ _ ____ ____ - - - - - ~ - -.. - ___ - - ~ -. _ - -- <br />IntrodnctiolL _ _ _ _ _ _ _ _ _ _ _ _ n _ _ n _ _ _ _ _ _ _ _ _ _ __ <br />Current.meter nWrl:'\llfCmentS.______ _ __~______ <br />Instrument8l.\ud equipmcnt______________ <br />Current meters_n__________________ <br />Yertical-axis cHrrent metCf8_ __ _ ~_ <br />Horizontal-axis current metel'S____ <br />OpticAl current meter _ _ _ _ _ _ _ _ _ __ <br />Care of the vcrtic::w-axis current <br />meter __ _ _____ u________ ____ <br />Ha.tiul!; of curn'nt meters_ _ _ _ _ _ __ <br />::-'ounding eq1lipnwnt _ _ _ _ _ _ _ _ _ _ _ __ <br />WadinJj!; rod~_ __ _ ___u___ _ _ __ _._ <br />Sonnding weight1'\ and acccssories_ <br />SOHnding f(.dl-l.__ __ __ _ _ _ ___ <br />SOllndiuj:!; cubit, _ _ _ _ _ __ <br />Conncctof!,-__ _ __ _ _ _ _ __ <br />Depth indicaton,___ u__ <br />Po\ver nniL__ ___ _ _ __~_ <br />Hundlin(,l'un~_ _n_ ___~ __ __ <br />Sonic :-;ollHdcr _ _. ~ _ _ ____ <br />Width-m(C'tli'lurinp; equipment _ __ <br />EquipnH'nt a:;:;semblici'l_ <br />Cttblmn.lY l'qllipml'hL _ _ <br />Brid/.!:(' ('qnipmellL~ _ _ __ <br />BotLt cquipmcnL _ _ _ _ ~. <br />Ic(' cqnipmcnt.__ ~ _ _ _ _ __ <br />Ydocit.y-aziffiuth-dcpth-ai'li'l('mbly _ <br />::\li~c{'llt1.neon!o\ cqnipmcnL _. _ _ _ ~ <br />2\Icu.::;urement of velocity _ _ _ _ ___ _ _ _ _ ~~_~ <br />Yertical-yclocity curve Illcthod_ _ _, _ __ <br />Two-point method_~_~ _~_~________~ <br />~ix-t(>nth@,-dcpth mct.hod~__ _ _ _ _ _ _ . _ ~_ <br />Two-tenth!\-depth mcthod_ _ _ _ _ _ _ _ _ __ <br />Three-point method~_~____~__~_~ _~_ <br />~ubsHrft\ce method~__~ u____~_~___. <br /> <br />Page <br />III <br />1 <br />1 <br />1 <br />4 <br />4 <br />4 <br />7 <br />7 <br /> <br />7 <br />8 <br />9 <br />9 <br />11 <br />13 <br />14 <br />14 <br />14 <br />15 <br />15 <br />16 <br />17 <br />18 <br />18 <br />20 <br />24 <br />27 <br />27 <br />30 <br />31 <br />31 <br />32 <br />32 <br />33 <br />37 <br />37 <br /> <br />Current-meter measurements-Continued <br />Current-meter measurement procedure_ _ __ <br />Current-meter measurements by wud- <br />ing______________~____________~__ <br />Current-meter measurements from <br />cableways~__ _ __ _ __ __ _ _ __ ___ _ _ _ _ ___ <br />Current-meter measurements from <br />bridges_____ _ _ ______ _______ __ ____ <br />Current-meter measurements from <br />ice oover____ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ~ __ _ __ <br />Current-meter measurements from <br />boats_____~_____________________~ <br />Moving-boat measurements of dis- <br />charge__________________~_______~ <br />Networks of current meters_ _ _ _ _ _ _ _ __ <br />?vleasurement of deep, swift streams__ <br />Possible to sound; weight and <br />meter drift downstream_______ <br />~ ot possible to sound; standard <br />cross section available_________ <br />~ot possible to sound; standard <br />cross section not availablc_ _ __ <br />Not possible to put meter in water _ <br />l\leasllrements during rapidly changing <br />stage____________________________ <br />Series of measurements during a peak <br />of Rhort duration_______~_________ <br />Mean gage height of discharge measure- <br />rnents___________________________ <br />Portable weir pla.tes_______________~_________ <br />Portable Parshall flumes, description and theory_ <br />Volumetric measurements____ __ _ ____ _ ___ ~__ __ <br />Floats_____________________________________ <br />Indirect discharge measurements___ _ _ _ ___ _ ___ <br />Dye-dilution method of measuring dischargc__ <br />References__ __ _ _ ____ __ ~___ _ __ _ __~_ __ ______. <br /> <br />FIGURES <br /> <br />Pare <br /> <br />1. Definition sketch of midsection method of computing cross--section area for <br />discharge meaaurements_h____ un h __ __ _ ___ u__ _____ __ _ _h____ _ ___ 2 <br />2. Computation notes of a. current-meter measurement by the midsection <br />method__________________________________________________________ 3 <br />3. Assembly drawing of small Price type AA current meter_________________ 5 <br /> <br />1'... <br />37 <br /> <br />38 <br /> <br />40 <br /> <br />4] <br /> <br />42 <br /> <br />44 <br /> <br />46 <br />46 <br />47 <br /> <br />47 <br /> <br />52 <br /> <br />52 <br />53 <br /> <br />53 <br /> <br />.~3 <br /> <br />54 <br />57 <br />.,9 <br />61 <br />63 <br />64 <br />64 <br />64 <br /> <br />v <br />