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. . . 001051 .:?Pillway Tile spillway for Design no, I would consist of a concrete-lined chute Qnd stilli~g-basin with earth approach and outlot channols, Tho c<mereto strt'cture would be 430.1 fe",t long and 20 feot wide with vertical side walls, except c'or tho-upper 25 foet which would form a tr"j1si tion from the 2 to 1 side slopes of tho approach channel, Sev~nt:"-fi.ve fe.,t downstream from tho spilhmy inlet, at tho axis , of the dan, there ',"ould be a control weir with crest Set elevation 4.,16 9. 5, which is 4.5 fe8t highor than the inlet floor. Concrete cut- off "mIls at tho bogilming of the ctruc.ture and at the weir would pre- vent undorsoop"-go. Through the embanJ""ont, a distanco of ap!,roxi- lClD.toly 105 feet, tho top of the spillway walls would havo the sarno outlino as the darn. Tho maximum de pth '.'/ould be ttbout 24 feet ut tho C:ownstroam odge of tho crest reducing to 10 fGot, 52 feot down tho chnto~ Tne Ch'_ltO \'Jould continuo a.t upproximately this dop-th for 115 f..",t, to elcvr,tion 4,12.6, tho top of tho stiIEng-basin. Prom this point tho top of tho sido walls would reme,in lovel with tho depth incr'Casilll': uniformly to 26 i\, ot in a distance of 62 foet" The stilling-:)asin "/ould bo 20 feot wide, 26 foot dea)), and lOa foot lone. Th0 101ICr 25 foot ':!auld docroo.so uniformly in depth from 26 to IS' foot. Thoro r:ould be contatod sills at the ontrCluce and outlet of tho basin. A eoncr.)te cutoff l"iall at the end of tho s'Gilling- basin i.;;ould prG'Tcnt UJl_dorcuttint;, .,.Jith ~\Ting_\,.ral13 retaining tile bq.c},:fillc All side \';:\118 would C(l cmmtcrfortcd whore they arc h}_E;h(:r than 20 fceto Tho founcJ.lltion of tho chuto and stilEng-basin \!ould contain a dro.in8.go systo:n.. Tho ox<>aw.tion for tho structuro ,'/ould bo Clppro:dmately 1-1/2 to I dole slopos nit!> D. mD.)Cimum depth of 451 fuo~ - Tho earth G.pproach channel vlould havo a curvGd alincmcnt D.nd length of 260':: foe'c. Tho bottom lIidth would vary from 55 to 20 feat. S!.de slopes ''1oulc\ bo 2 to I and tho r"o,ximum,cut about 10 foct. Riprap would bo placed ns roquirod. Tho outlot cham\o I to 'the stroam would ho.ve a bottom \'cidth of 30 foet 'end J.oncth of 3GO':: foot. It would bo o)Ccavutod on 2 to I sido slopos with a mClximum cut of 30 foet. Riprap would also bo placod here n[~ rcquirodQ Tho capacity of the spi.lhlaY \':oulcl bo 2,75G cfs at resorvoir \'Intor-surface clcv[,.tion t!,171.1. Tho spillwr~y for Design No. 2 liDuId consist of 0. concreto-lined chuto and dilLnc;-basin nith C<'.rth "'l'proach ,md outlot channc:ls. The concr"to structuro would bo 385,! foot long n.11cl 20 fooot lIido with vcrt.ir:al sille -Nalls, except for-tho upper 25 feet "'ifhich would form [l trClnsition from the 2 to 1 sitlo slopc:s of the uP9roach chann01. S0vonty-fi vo foot C:o',mstroc@ [,t tho "xis of the dam, tho r'J would co 0. 56