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<br />TIOOBNIQUES OF WATER-RESOURCES INVESTIGATIONS
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<br />UNITED STATES DEPARTMENT OF THE INTERIOR
<br />9-193 GEOLOQICALSURVEY FUe ________
<br />Slope-ar.a mnsurement WATDI "Ill C .~ DlV_ION
<br />December 1960 Me8s. No. _ _ _ _ _ _ __
<br />..ope..... ........ment.f __S.J'1al5.fLCr.J! elLo_e.ar: _CO.nn.e LL,_WaML_ ___
<br />n_1 Mi~ ~~JLgmtaus__ ,.ute.2n_ "" flood of.. Ee.b.L -Z&.. 195.f1_ _ __ n____
<br />
<br />Reach between sections
<br />Length of rNeh (L), ft
<br />Fell in ruc:' (:\h), ft .
<br />
<br />1-2 2-3 3-4
<br />m:...::.:::.:..... Z,?} ...9..o....j/9..
<br />m /J,9.7 0,$$ (d)]
<br />
<br />G... heilht. .... . ............... .................... ft
<br />D;soh....! ......... ....4;1.80.....m ....m ...... ...
<br />Onlinale .re., ..........1.15.....................,.... sq ml
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<br />SECTION mOPERTIES
<br />
<br /> -- 2
<br /> 1.... K=~ar" Ky'2 I'
<br />Socll... n n- . , ,~ A 0 .
<br /> .
<br />Isf",.I-I.7 ./Hd 33.0 2011 ""... "./2 /4,SSO I , , ~OO 1380 {.. '4
<br /> L?~ I , ,
<br />? 2.-/1 1110 /8.1. (,.1 .77 ql) I "_i/Q",,i R 1.31
<br /> 11-1.7 .0 203 .4- 2.29 15. 3~0 iR7.r.' I I -3 7:() ~.7.s
<br /> 2oq.1 15, 4-30 ~~ 1._
<br /> I I
<br /> I I ,
<br />.? 1-14- Gal '8.6 1/). () ;7. M lIl.n I I~~ '"" .3/'1
<br /> 212 L?.!u ....~ /7/.4./'1 'v....i I , ':>.l.1l ~.4.e
<br /> ':'1'- 2.6 .05/ .1.4 .../) , i I1l&f 4- .54-
<br /> U+.6 /7."'-1;0 / WZ..i.~ /.08
<br /> i'rJ~ ,
<br /> I I I
<br />4- ........1 Mil /8.6 ".1 .~ .7<1 ISO I :274! /3 /./7
<br /> ,. 193 3.7<112.4.3 1.5.480 iqqloi I '3{'0 7.05
<br /> 2.8 ..2tI .~? 60 I L2:ra 1./0 4- 1.403
<br /> Zot..'I 15 {.qO -..:'..-
<br /> ;.".,i I
<br /> , , ,
<br />Weiahted conveyence4(Kw}, 1-2'-I(. 2-3 .~ 13-4 FORMUlAS
<br /> .X .~~.. . jilt. ... ..j~...r.t:hl...
<br /> 2 A= Z (K:Ya2) +K~VAtu.1
<br />COMPUTATION OF DISCHARGE
<br /> 5 6 7 Computed Q 3 O-Q (K/K_,)
<br />Reach Assumed Q -h. A.. ., S= hfA. s' =Kw s'
<br /> 4 Kw = V Kupstr. X KowMtt.
<br />1-2 1,330 ~ !-aDI, 0.'15/ 0.0178' 0.0B87 1,330 5 hy = A ~8
<br /> 1,3Z0 . 08()1f 6 Ahy = U,mr. hy - Own..tr. hv
<br />2-3 -:-.5lo .065 .58Z .OOU7 1,32.0
<br /> 7 When A hy Is positive.
<br />3-4 1,4-60 .",io -.I+Z .'1%' .00780 .0883 I, 4-60 hf=Ah + iIlIiAhy
<br /> wnw.
<br /> .Uta When Ahy is neptlve,
<br />DISCHARGE (by ""mul.) .........m........6.3.8.{l......................................m..' ..................... hf=Ah+Ahy
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<br />
<br />Summary of factors influencinl measurins conditlons (fIoodmarks, surae, scour, fill, channel configuration, anate of flow,
<br />selecUon of n, etc.):__ _ __ _ _ __ ___ __ _ _ _ __ ___ __ _ __ ____ __ ___ ___ __ ____ _ _ __ ___
<br />
<br />;.:.: ~:. 71..=.-;; .L'~= ~ -.-:;;:;;~; .~~j,,~-i.=.~.~ ;:':.J.~~~ -c~ ~7 -.=i..f.E..~u~. -.;:~ :;i:!.~.;i-~
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<br />U."OO1'_Df'fPllDlTIlID~'I"DO.lfttU
<br />
<br />Fisure 7.-Sample slope..area computation. discharse.
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<br />.. u. S. GOVERNMENT PRINTING OFFICE: 1968 0 . 313-025
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