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<br />ud21:1 . <br /> <br />^~OREV.'S ....~D ~^~KERVlS 163 <br /> <br />., <br /> <br />MIDDLE 90UlDER CREEl( AT NEDE=lLANO. COLORADO <br /> <br />"r <br />"r <br />~ " <br />z <br />~ <br />(; I;i <br />w <br />rr. 31"" <br /> <br />...VERAGE.......TEC<vE...Fi <br />'!HS """,,rufl"'i.. FL:::h <br />..........--.. 'i'~ CI1A.N'<EL '-'AI..TE........ce FLOW <br /> <br />a <br /> <br />~ <br />w <br />CL 0 ~ <br />~ <br />~ " <br />~ ,J <br />~ I <br />U <br />~ 12 r <br />u !l~ <br />'! <br /> <br />LOW wATEi'l Yf..P,~ <br />1~504 NJI,ruf:V.I..FLCW <br />---.......--.. 19:504 Cl"l",....El h'ANTENANCE FlOW <br /> <br />~ 'r <br />~ 3'. <br />I ,b <br />~ o~- <br />Q <br />> <br />'" <br />~ <br />o <br />z <br />~ <br />w <br />~ <br /> <br />"t <br />" <br />" <br />, L <br /> <br />:~ C <br /> <br />, <br /> <br />HIGH WATER YEloI1 <br />'951 NAruRA.l... FlC..... <br />....___...... 1!l,-7(;HANNEL !.l.o\I...-:-e.......NcE FLOW <br /> <br />OEC <br /> <br />JA~ <br /> <br />FE. <br /> <br />NOv <br /> <br />OCT <br /> <br />J <br />1- 1 <br />~~~\,~~~ <br /> <br />i <br />i <br />I <br />i <br /> <br />~~-- <br /> <br />.r- <br /> <br />M." <br /> <br />,po <br /> <br /> <br />1 <br />j <br />~ <br /> <br />MAY <br /> <br />JUNE <br /> <br />.:ut.y <br /> <br />.UG <br /> <br />SEPT <br /> <br />Fi&. 1. CI'..anm::II'rlll111lcnance flo"'s delennmed for Middle Boul:le~ C:uk at "1'Oeceru.,d cunni 3 )'e3..'5. (AI 1915. (B) <br />1954, ana (el 19:51. <br /> <br />~ in e::l.c.cllcnt Qoe.lo-one agretm:m with the interval of <br />discharge th3t ~e$ ll:.e largen quantity of bcd'lIlAterial <br />over the: penod of t<<Ord. Based on this agreement it was <br />cocdulkd that 1be range of effecm-e bed.matenaJ transpon- <br />ing cischargC5 ~ the flows which tonslruet and m:ti.::lt.aio <br />these channels over time. <br />4. In PIOICtic.e. an ope~ional regime of channel <br />malnten.3!lc.e fic....' will mvoh'e it balar.cing be~ern (1) <br />mir.i:n;Ting the quaouty of ....a.cer ~uired for inst:eam <br />fiows, .:lDd (2) the pre:dicubiJiry of these flo.....s. <br />5. A highly effieil:D.t ctlunel m.:tiOIec.anCt regime <br />consisting of all flo.....s sc1ficier.t 10 initia~ bed particle <br />mooon and gre.a.ler w~ evaluated. This regime .....ould <br />preserve the IWUnl range of dOIDUlant bed.material <br />tran5ponmg d..isclur~~ with 35 ;>erttnt of the meaD annual <br />fio...... A substa:uial maJonry of cha.n.nel maiDtena.1.ce Oo""s. <br />both number of d3.Ys and \'olume. .....ould occur during large <br /> <br />no d <br /> <br />0991 ,;t U 131 <br /> <br />runoff years l.ittle or l'I~teoance nowS. in ~css...of <br />~dlo~_"u~wW:l.bdolltl..1..\luage.. <br />~. <br /> <br />,(ctftDw~d8mt1l.'S. We apprcc~te!he s\l~ptln and encourJ.&emeCI <br />of N1dn.w Walch :and Larry SchJnidl. This UWUtl&ltlO:l <br />benefintd &rutly from numerous discl.lSS101U '" Ill'! Luna ~pold <br />al'd Dave Rcsgec. Theil tOmmt:D~ and sunestlons Me <br />lpprec.~U'd Vtr)' muth, Peler Wil~o,k and John PotyOOD)' <br />reyie~ed a draft mu:uscripl and r.ude several t!pecially helpful <br />suue$lions. <br /> <br />REFERE:"CES <br /> <br />ACkers. P.. River rell!ne: Research and a;:,plieuion. J. of tilt <br />lfUOI. of Waf. E1ItIMtfJ. 26. 251.281. 1972. <br />Nldre...s. E,O.. Ef'l"ecave and bankfull disc.har&e of SU'UrllS tn <br />tht Yampa RJver B4sin. Colorado and ""yot:'lIn,.}. u{Hydr.. <br />46.311.)]0. 1930. <br /> <br />3JL\~3S lS3~Od rasn <br /> <br />WII lal~I.6 .1- d3S <br />