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<br />DISCHARGE MEASUREMENTS AT GAGING STATIONS <br /> <br />3 <br /> <br />is the possibility of damage to the equipment if <br />the flow is turbulent. <br />The summation of the discharges for all the <br />partial sections is the total discharge of the <br />stream. An example of the measurement notes <br />is shown in figure 2. <br /> <br />..... .. <br /> <br />~ - .. -1, :r~ ::=; - <br />- - - <br /> --'::" <br /> , <br /> , <br /> , e--" <br />0 , <br /> e-- <br /> ~ <br /> . <br />.Cnn <br /> -_!.......- -r, <br /> <br /> <br />u,",nD.uTU <br />DCP.......~~.=::._'''O.. <br /> <br />_...Zi.O <br />-..7'J <br /> <br />DISClUlGEMU5UIDlDlT MOlES <br />s...No.I."'%-,5 <br />., .Bi'. C~.c.c..I;; 1"1._" .O",,"WOOI:C Vq, <br />o...Sdt. ZS ...6-~"",. ToT B...",ho.nJl.1\ <br />....... ~.o_.- 1...,3. V.l.O.SJc.I1-I.'i'3 DioU.~ <br />_.;t."S..._ZS c..1t,.......Ol... /..:-S-Roa <br />".,........J Ho......._.Vo.riu.s.......r...L. _No.ibS"i <br />;;TOi.~I....' J~;:~.(-.1--.1--~.r,1 ~::~~~:::?~~ <br />'3jQ$i:...~ ICI,," ..__~''''..=o ....Fr.... <br />I I __ <::,....-.. - <br />, ! - !::I-......................-"... <br />l"f30l=ino1Jl ~'1. ..... _1,5 l::!....~,..... <br />~~ <br />~LllI-'Z.!I."o (1-...........1....... <br />_....~.. TUi ,_... <br />I_I <br />C_'MGH I.~.......' <br />__,.......".....l.1',I~'~' W';, r-'....."'j,...... ..t.IIow.. <br />__ c-....."I' ':>q~ ..",j '....VC,Ii f.ur., A.V4f1 <br />FJ.o~oid d.I4IT,...bl,(t.i,""j .....,,,., CJQ",d.7 <br />Ot... 'r'eat..-t Row;., ct"fH' ~ 67 -f,.t'"lJ$ <br />c.. O,a:;. "M.,5""1u'f'lOI"'I3S <br />'w",;~....... .'1..:. ,............. <br />~T...IJ:::~.1 -n. <br /> <br />Coot.ol C/&Qr <br /> <br />L.. <br /> <br />G "-.......... I.qZ,-I.bJ; 0.3 It.!"O I f't <br /> <br />The mean-section method used by the Survey <br />prior to 1950 differs from the midsection method <br />in computation procedure. Partial discharges <br />are computed for partial sections between suc- <br />cessive locations. The velocities and depths at <br />successive locations are each averaged, and <br /> <br /> <br />......tf~ <br /> <br />~ ~ <br /> <br />- - <br /> <br />7 <br /> <br />.'-1 I. <br /> <br />." <br /> <br /><j .qi <br /> <br />_~H"~:~ <br /> <br />~~J.":J_ f5-'.z,., __s.a!~... <br />.::;..:.:. [8 , . . . ~.ll8' <br />-:::-; __.. .j~-~.~h ~ --~~b1 ~~_" .~~l: <br />..ao~"fi.~ 5 1."1 .'ln~3.J <br />. ' iz:;Lf.d~ . :.J" iil-CW: <br />f .i<t~i[jt~l'/B..'~ '.".::11'1 j,~I..il.'1 <br />I~_. .8j10$>. _I -.+-" <br />_~j ~6 1.': ~.z.o: .' ,'-P .lLli..':!~ <br />L_,.' ..115~ '''''1 '.j. ,. ._~.- <br />_j .iUZ ~I ...l''!;l'i.< ,~_, J> U .H.r <br />. I ...sll21~b...5~ <br /> <br />-' "~Iz4ik:o~o'~t'... ..ti[ ij". <br />i .<[' !25 ~'5:S"~1 . SJ>:.w <br />, , . 11'1Q 'i"'l <br />1 4'1 l.SZ.Z. ..6;'0 I'fS r : S3 5,5j ZcU" <br />i "'17'3 i2_aS.,',ol..,q ! _'I!.<j'i--bi!,..'~.~.' <br />l~IS; : .:: _ _ <br />: 50,3 ;.z..z. ..I;o.IO,S I,'IB b.gl ~.rz'" <br />I " . II' <br />... 5J_:3 k J ..6d 0;53 l.~" 0.3'1 ~'l1> <br />.1 sl~ :..<~!' D~St."" ;'''11., ",n,..: <br />J ,i. .. .. .. <br />.'l!L5.!iI3 !~.o .-4! 7 t-l.fO ,":I~. ; ,'1~ 6~a~ .,sz.'. <br />.,,~ b~d~ ~l.'i ~6: ~ ["IS ~ _ . .38 I.f.Z. l.bO_.... <br />", i i :. I I <br />.'JSr &5:3 j'.OS:.":IOISb "3: <br />'B! b6.3 !".k 5 f"""l <br />,11~ Q I <br />,-'0, <br /> <br />L.Ej.v '"3Q; <br /> <br />:....2. 3.2:-I.:ii.t <br />i ---- <br />.30 L9[ "-S~_: <br />o : - ~ii " <br />'1k'l 76.37- <br />i <br />I <br /> <br />.I <br /> <br />J <br /> <br />Figure 2.-Computation notes of a current..neter measurement by the midsection method. <br />