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<br />. I'lbed net"",rk, wtth ,'olLmteer rain and str..a!:l goge observers II10n&
<br />the 01.11" are., sllppleOlented by ""~om"ric rllln .."d sne.... gage' in r"lOotc
<br />areas (.UternAtlvc )A).
<br />
<br />. Radar receiver at Fort Collins to obtat~ rad<lr vie'" from
<br />Cheyenne NViS radar by ",e~nB of dedicdtcd ?hone Urle (AltHn~tlve tl).
<br />
<br />. ~ixed networ~, with volunteer stream gage observers along the main
<br />stem and North Fork supplemented by automatic rain g..ge6 OVer the main
<br />stem basin (Alternstive 5B).
<br />
<br />. Prtv.~te mcteorologtcal co"sulthg firm retaine<J t.o give det",ned
<br />forecasts for I.ad",..r Cc;un~y ar..a (AlterMtive 12).
<br />
<br />.
<br />
<br />llixednet",ork,withvolunteerraingageobservers oVer the "",in
<br />
<br />The volunteer observers h<lve votce radio, indoor recording rain
<br />gages,otstaffgages[ordetermintngaUeanllevei. Volonteerr<ldios
<br />"ouid require <I tone-alert pag~r for each observer, repeaters, <lod ..
<br />base station voice rlldio. Automatic radto gages would require re-
<br />peaters and II. base sUtion data receiver, lOinicotIlpuUr, and pdnter.
<br />
<br />ste"'''<ltershedsuppleLllentedbYAutomatic.treamgagesontheOla1nsteOl
<br />and Nortb Fork (Alternative 5C).
<br />
<br />. Mixed net",ork, "'ith voluntcer stre..m gage observers on the main
<br />stem and Norrh Fork supptelOented by automa~1c strcam !I<lges, No rain
<br />g~ge$ (Alternative 5D).
<br />
<br />COMPONENTS OF ALTERNATIVES
<br />Table 16 displays the component parts of each ftash flood
<br />detection altern<lttve.
<br />
<br />. )fixed ne~work, with vol,,"tecr stream gage observers on the main
<br />stelO 8nd Nonh Fork supplemented by automatic rain gage. on tr.e Olain
<br />stem basin and automa~ic stream gages on the North Fork (Alternative 5E).
<br />
<br />The bcsin-.cale alternatives include:
<br />
<br />COST OF ALTERNATIVES
<br />The costs of tile flash flood de~e<:tton alternatives are sUlIJT\8.dz"d
<br />in tables 17 and 18. A base station ",as a"s~med to be located in
<br />existtng facilittes at Fort Collins with nO additional cost. Charts or
<br />gr<<ph. for rel...UoOl str"a"flo,", t" rnl"fall and rating eur"e~ for co",..
<br />puttng st.ream discharge frum 8~sge data ",ere cons1dered to be 3upplied
<br />~o local tnterests by f<!deral or State as.1s~a"ce. Cost; do not 1n-
<br />cludetirnespentbyUeldobservers, FieldoperaUng costs areonty
<br />for :na1nt,.ining equipment. Price leveh are as of Septe"lIXH 1980.
<br />Altern.lt1ves uttltdng <lutofllatlc devices located 1n the fiel<J \00uld be
<br />suscel'tL~l" to vandalisw. for exa1'Dple, if on~ autotnHtc p{" g,'g~ or
<br />~tr~"m gllge per vear ..LlH be repl<lced b altern.nlves 2, 3, 51< thro<.lgh
<br />< < , '" 1 r t10n and "",i~tena"ce co"t,. "'auld incr~"~e by
<br />u,'>,3n v,arInU3 ope,a '
<br />30 to 100 percent. Only the ml,,1rnum nllmber of rndto rel"ys or repeat~r
<br />
<br />. Automatic radio-roporting roin gages 00 tlw. ",ain s:ew ,,'!aiLl and
<br /><IL1t01l1<lt Ic .tream g<~ges 0(1 the Xorth Fork (Alternat 1 V" 6).
<br />
<br />. Volunteer ~tr"nrn ~a!le observers (Uternative 7).
<br />
<br />. ALltornat{c radio-r~porting ~trearn ga~es (Alt~rnative 8).
<br />
<br />. ','olunteer rab gJgc observers (Alter:l<ltive 9).
<br />
<br />.
<br />
<br />AlIt"'''~tk radlo-r.-portlng r,.in g~ge" (\It<'rn~tiv~ LO).
<br />
<br />tQW,,"" ,woessary to "perat~ the ,,It..,rn~tivc" '''~r~ lnct<.lJed in CQsts.
<br />La", 1':nf"rc"",e(1t ,\s~t8tance Admtn1stratlon (LSI<A) - A.^t.n~.d ~y r"Jt~
<br />roetwoT', t. plllnn~d for L"rlm~r COltnty. a ~.... ~r~~u:"ed this "~twor~
<br />
<br />,
<br />
<br />"
<br />
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