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<br />SECTION VIII
<br />ALTERNATIVE DESCRIPTIONS
<br />
<br />Vlll.2
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<br />GENtRAL COMMENTS
<br />The econom I c in~ e~t ig at ion of rea,l b I e a lternat I ~e, is made by il f actua I
<br />aflalysls of tne ',ar iou; co,t, ilno benef I t> d>>OC iated wi tn eacn al ternat I~e
<br />p I an. To simp 1 ify the procedure, 1 oc ill go~ ernmen t input and pa, t exper ience
<br />was combined ifl a >ere<oning proce...... whereby therno,t fl!dSlble alterndtlve
<br />plans w<ore,elected for edCh reacnof the Cledr Creek studjl area_
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<br />del'eloped areas of the flOOdplain (and outside the l00-yeM floodplain for
<br />flood, of greater magni tude). Th i s a 1 ternat i ~e aSSlllles enforcernen t of the
<br />ex ist i ng f I oodpl a in ord inance, in aredS that are now unde~ e I opl:d. In add I-
<br />t ion, It d,SLJl1e<; part ic 1 pat i on I n the Na ~ iona 1 Flood Insur ance Program.
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<br />TheresultSCil-n then be subjectively analyzedcon,ioering intangitlletlene-
<br />fits and neighborhood desires, implanentationcapatlility,andPoliticalcun-
<br /><;ideration, to choose the dlternative<; for each reacn WhiCh arerno, tdesire-
<br />able. A, long a, the cho<;en alternative is technically practical, thl,
<br />decision lies with the local gov"rnl11enL ln oth~r word<;, it is reasonable
<br />to sel eet an a1terndtlve "hich generdte; the gre4te,t SOCidl, environment~l,
<br /><!.nd recreationil-l eenefi t~ even though the quanti fiab Ie beneflt/cost rat 10
<br />l11aynotbethehighest.
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<br />Floooplain regulation is us~d as tMe oa~eline by which to ITI"d,u~e b~ndit,
<br />from d<rnage re<luctions due to th~ con,truction of cnannel modiflc<l.tioros,
<br />enlarged openings for <;treet cros,ings, and floodplain acquisition_ For
<br />tnis an a 1 ys i '>, it i, il-"lJlH:.'d that no add it i ond 1 ild~er~~ encrOdC hnent wi I I
<br />occur and that dornaged structure, -.l)uld b~ reeui 1 t to their pr~-flooo cond i.
<br />t1on; ho,,~v~r, ~ince the implornentdtion of n~" F~d~ral regulations by the
<br />Fe()er<l.l Eml!rgency Mandgellent Agency (FEMA), r~duct ions in f lood dil1lag~'
<br />could occur due to grddual removal offlooo-danaged structures. For local
<br />pdrt ic i ~ot i on in the Feder d 11 Y sub ~ io i zed i nsur Me e progr <flI, enforcanent of
<br />floodp 1 din regu 1 at ion~ is requ ired.
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<br />REACH 1 ALTERNATIVES
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<br />Minor cnaMel maintenance woul d be necl!...;ory for thi ~ al ternativ~ to rerr,Qve
<br />d\!orh blockage, in the urllanized ~rea,>.
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<br />Nonstruc tur a 1 ano str uctur a 1 d 1 tern at i ves were ev al uated in th I s ~ t oOy.
<br />Non~truc tur al 31 tern at i ~ es i nc I ud€d f I oodp I o1n rtigul at i on, acqui s It lOn of
<br />f100UW.o"" pr'vp<!r.ti~~, M,d a flood '~arn~~9 tJ~te~. St~uct~ral alte~nHh,,<
<br />includell grdss-I ined, rock.l ined and 5tructural-wall~d ch~nfi~ Is in COOlb ina-
<br />tion with bridge improvem~nts and other select<<d structural i:l1prov~ents,
<br />and floodprooflng of mun ic ip<l.l ,tructure, wi t.n ren~d ial impro,'errltints. Tne
<br />following describes the il-I ternat ives "hicll w~re inve...t igated for tn~ tnre"
<br />study reaches of Clear Creek - Youngfhda through Golde"_
<br />
<br />Prev"ntat i v e and corre~ ti v<< m"dsu~es wh ich are a~ all all 1 e to th~ Cl ty u f
<br />Golden dnd Jeffer,or, Co~~ty a~ d re.ult ~,f th~;~ "doptlOll (It floodplain
<br />o~d inilnce, ore a~ follow,:
<br />
<br />~reventi"e Mea,u~e,
<br />
<br />FLOODPLAIN REGULATION
<br />The fl ooa~1 d1n regu I ilt Ion alterndtive r"f€f> to only uS ing fl oodp lain
<br />zoning, witn no significant Changes in exhting road and Chil-nn<<1 structur~"
<br />but cont~oll ing f,jrtner iloOd oofTlag~ potent idl . ]1'1 <<,sence, tni, is a
<br />">tatu, quo" dl t~~ndtive_ Floud dofTiage ...oold st ill occur in ed.ting
<br />
<br />o [)ellnedtion of floodpl ain (Refer<<n~e I)
<br />o Floudpldinregulation
<br />o Subdivisionreguldtion
<br />o Floodpldin informdtion
<br />o Flood insurance
<br />o Control oi wat<<r ana ,ewer e)(te~;ions
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