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<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />I
<br />
<br />REACH 1
<br />
<br />I
<br />
<br />SOJTH PLATTE RIVER
<br />TO RlVEROALE ROAD
<br />
<br />REACH 2
<br />
<br />I
<br />
<br />R1VERDALE ROAD
<br />TO HOLLY ST.
<br />
<br />I
<br />
<br />REACH 3
<br />
<br />HOLLY S"[ 10
<br />E.1l2th NE.
<br />
<br />I
<br />
<br />REACH 4
<br />
<br />I
<br />
<br />E. 112 th AVE. TO
<br />UPSTREAM STUDY L1M11S
<br />
<br />A
<br />
<br />MAINTAINING THE
<br />EXISTING
<br />CONFIGURATION
<br />
<br />DIRECT FLOW AREA
<br />
<br />0054- ALTERNATIVE
<br />
<br />MATRIX
<br />
<br />B
<br />
<br />c
<br />
<br />o
<br />
<br />THE USE OF UNEO
<br />FLOOD CHANNELS IN
<br />ORDER 10 REDUCE
<br />RIGHT.,-OF-wa(
<br />REQUIREMENTS
<br />
<br />E F
<br />
<br />G
<br />
<br />H
<br />
<br />SELCTEO OR L1M~~_
<br />STRlCTURE IMPOOVEOE.N" OETENTlON ANDlOR
<br />OR AOOITIONS AM) RETENTION FACILITIES
<br />CHANNEL IMPROVEr.ENTS
<br />
<br />~~~;t'~ ME,~ii'~T~ RELOCATING CHANNEL
<br />ANO RELOCATION FLOOO WIIRN1NG, FLOOO TO ROUTES OTHER THAN
<br />CF OCQJpjlNTS Ii'SURANCE, E\ICLIIlTllN HISTORIC CHANI'EL
<br />PLANS, ETC.
<br />
<br />~ ~~'<,'-: ~"-~ "-~~~',,~';:;.,,','~ '<:"'~\~>,'"",
<br />~~~,,, I~~;,c~~~ LG~~~"~~AR
<br />~~~~>~<'- ~<'- ,..~",- ~
<br />
<br />,(tJERAGE ANNUAL DAMAGES ~ ~ ~~~~ ~ 2 THRU 100 YEAR
<br />$9,900 ~ " '-~ " '-~" ':.~.:::.' CESIGN Fu>N
<br />PW.-'I39,OOO ,.,,, "..."" ""''''' ~<,~'.
<br />~ ',,:<: ':--<' .:::. '", "
<br />"v.'-.::. ~ '~v.~'; ~ ~~
<br />
<br />." ~$:.' 0.:~
<br />~ ~~L ~0.~~.~S
<br />:::-.:. ~ "-'::;'':---.v.",,-''''-'' ':~::.:<. v."- ""
<br />AVERAGE ANNUALDAMA<B ~ ~ ~",', ~ ;:. ,",-y.~~~~'>"
<br />p~~;:,OOO ~<< ~::"~ ~"'_ ~.< "~v.
<br />,,,,,,,~::"',<, :::: :-..~< 0.".::...0 ~:-..' "~,,.:...~~
<br />
<br />AVERJIGE ANNUAL DAM.Il6ES
<br />$36,400
<br />P.W..t~lO,OOO
<br />
<br />1WfR/JC:E. ANNUAL C/AMI:lGE5
<br />$27.700
<br />P.W.-t:388,OOO
<br />
<br />TIE INSTALLATION OF
<br />A NATURAL TYPE WATER- MAJOR ltl>ERGROUND
<br />"~~.,~~~ G~.LTS~JHk
<br />
<br />DETERMINED FROM OLD HISTORIC STREAM
<br />AERIAL PHOTOGRAPHS, CHANNEL USING LOCAL
<br />OLD MAPPING AND RIGHT-CF-WAY
<br />FROM LOCAL REOORDS WHENEVER POSSIBLE
<br />
<br />:lit fLOODPLAIN REGl,LATION AND ACUISTlON OF FLOOO INSURANCE BY THOSE PROPERTY OWI>ERS
<br />AD\IER&.Y EFFECTED BY Tt-E RESIDUAL IOO-YEAR FLOOOPLAIN ARE INClUOEO WITH EACH ALTERNATI'v1::.
<br />
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<br />I
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<br />I
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<br />I
<br />
<br />1. GRASS LINED:
<br />2THRU lOOYEAR
<br />DESIGN FLQINS.
<br />2.CONCRETE LINED
<br />2 THRU 100 YEAR
<br />DESIGN FLOWS.
<br />
<br />l. GRASS LINED
<br />21"l-fiU lOOYEAR
<br />lE>IGN R.DW OR 400ds
<br />WHICH EVER IS LESS
<br />'ROW CON51RA<Nl'3) _._
<br />2.c:DIIC. LINED; 2THRU 100n
<br />CESIGN AND Fla.N.
<br />
<br />~~'>'v. "-.. ~ :'~~
<br />I, n>~~("
<br />'" ACTI ,',,'
<br />At. u1
<br />... '.
<br />~,,' , '- "-'-.-...:.;~ '>
<br />
<br />1. IMPROVE QJlVERT AT
<br />RIVER DALE ROAD; '2 "ll-RU
<br />100 YEAR DESIGN Fl..ON.
<br />2. PROVIDE COLLECTOR CJ:1tH
<br />8 CULVETS RJR LmRAL.
<br />2 B 8 2C; 2THRIJ 100 YEAR
<br />DESIGN FlDW
<br />
<br />1. CONTlr-LlE CLLVERT FFOwl
<br />112th /!WE. 10 UPPER
<br />MEDEMA FON)
<br />'OO'fEAR DESIGN FLOW
<br />
<br />UPGRADE UPPER AND/OR
<br />LONER flE.CEMA PONDS
<br />AND OONSTRUCT NEW
<br />DETENTION RESERVOIR
<br />AI!1:NE E. 112tt1 AVE.
<br />
<br />I~:,~~,~;",~~~~~..
<br />2.~~'I~~YR. ."E~i
<br />fROM E.112thWll:( TOOE ,'.. ".. ".. "."\
<br />RY DR. 10 DIVERT A.DWS. ~
<br />3. P.ROVIDE GRASSLlrED ~~ '
<br />g:~~2~~ ~1QDi. '< '" ',>.>...'
<br />
<br />AQU1RE PROPERTY
<br />
<br />AQU1RE PROPERTY
<br />AND RELOCATE RESIDENTS
<br />
<br />~':~~~'.:::.<~:>~
<br />'iC>\NO { '.:::.
<br />-.
<br />N.1V
<br />~"l s..~<:s
<br />
<br />ACCUIRE PROPERTY eo
<br />R8...0CATE RESIDENlS
<br />AS NECESSARY
<br />
<br />FLOOD INSURANCE 8
<br />flOODPLAIN RmJLAT10N
<br />
<br />FLOOD INSLRANCE,a
<br />FlOODPLAIN RmJLATlON
<br />8 FLOODPROOf\NG
<br />
<br />FLOOD INSURANCE 8
<br />fLOODPLAIN REGULATION
<br />
<br />~~
<br />~~~~
<br />~ :v.v.~ ~
<br />~ '..~~ ,,~
<br />~'..v.~ .'~
<br />
<br />I. l..DN FLOW
<br />CONSIDERATION
<br />
<br />>>0: >>"
<br />.. "... I'.'
<br />
<br />S"~~:~
<br />~~~~,~,
<br />
<br />J
<br />
<br />K
<br />
<br />OTHER
<br />
<br /><XMlINATION OF AM'
<br />OF THE PRB:EDING .
<br />
<br />COMBINE D 8 F
<br />
<br />COMBINE F WITH
<br />C,D, OR E 1.
<br />
<br />COMBINE F WITH D OR E
<br />
<br />"
<br />
<br />FIGURE1lL-1
<br />
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