Laserfiche WebLink
<br />(';} <br />t~~} <br />c.)- <br />.... <br />N <br />~ <br /> <br /> <br />2 <br /> <br /> <br />The monthly flow measured a~ t~ese sta~ions is summed and the total is the <br />measured return flo~. In 1985, t~e combined annual flow of these stations <br />was 28,231 acre-feee. <br /> <br />UNMEAS!JR!D R..,..U.RN FLOW <br /> <br />The unmeasured retu~ flow is oalculated as follows. Begin with total <br />annual Ale losses from Station 60 to Station 1117 (rounded to the nearast <br />1000 acre-feet). rnese losses are either reporced by the Imperial <br />Irrigation District or calculaeed as the flow at station 60 minus all water <br />delivered or s~illed be~~een Station 60 and Station 1117, and minus the <br />water delivered or spilled a~ Station 1117. Subtract the annual measured <br />=at~~ :low dese=~=eci above (=ou-~ceci ~o :~e nea=es~ 1000 ac=e-:eet), the <br />annual evapora~~en bee~een S~a~ion 60 and Sta~ion 1:1j (~~is eva~ora~ion is <br />es~ima~ad: ~Q be 3,000 ac=e-=ee~ pe= yee:, baseci en abou~ 4iS ac=es 0: f=ee <br />wa-:er su=::ace :...~ -:=.e A-4.C oe~':JeeIl SC3.1:,i,Ol:S 60 and l!.:i, and an amu:al <br />evapcra~iQn :a~e or abcu~ 6 1/: :~ i fee:), and :~e annual ?hrea~oph~a <br />oonsumptive use be~"'een tiC and ~he flood ?;'a~~ 0:: ~he Colorado River (tltis <br />phreatoph~e oonsu:ptive use is est~ated to be abou~ ~,OOO ac=e-:eet per <br />year, ~~ L~lanation or how :his es:~a:e was made is presented i: :~e <br />followi::g paragrapas). rn;,s calo::la1:ion :.::l equa'l:;,on fOr::l is shown below: <br /> <br />URF = L60 - C~~ ~ Evap ~ ?h"T) <br /> <br />w-ae=a: t~ = ~~2 O~easu=ad Re~~== r:o~ <br />L60 = ~~e :osses ~ ~C Eec~een Sea~~cn 60 and <br /> <br />5~.s.~i.cn 1.117 <br /> <br />~ = <br />!'v.ap = <br />?!:~ = <br /> <br />7ne ~easu~gd Re~~=: ::cw <br />7~e Evapo=a:i:n ==:m tiC be~~een Sta~ion 60 ane <br />S~a~~:~ ::17 (5.5*473 c= 7*47=) <br />~~e C~n5~~~~ve :se ~= ?~aa~oph~es be~~ee: ~~e <br />~C a~ci ~~a ::ccc ?~a~ 0= ~=e Coloraco ~i7e= <br /> <br />~o~cieci ~~~ual ~~oe=s a=: ~sac -~ s~:~=: anc s;eec ~=ese c~lc~:a~ic:s. <br />~~e ac:ual =i~~~s a=a g~ve~ a =C~:~:7 ~~s~=~;u~~== ce=~veci ==== :~e <br />~easu:ad =e~:-~ =:=~S === =aco:~~~ =~-:cses. ~acu~a ~~e measu:ed =e~__~ <br />flew e.."Ccee4 Ute =e;e:-=e-: !.:::sses oe1:".J~e::- .:ta.~.:.o~ 60 anci Stat::.cn 1:'17 or ue <br />calc~la~icn yield a ~ega~ive value for t~ =0= any c~~e= =easen e:e <br />unmeasured. re= :::'c-..; woulci be =e=. <br /> <br />..... .. <br />