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<br />~ou Id be used a' an ..I tcrn;)~ive radto tra"s""ission route in case 0'
<br />dsmagc to the flood deuction system repeaters.
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<br />Ann\lal ct). ~9 "ad replacement COsU '"'ere c<llculated ustng " 7.175
<br />percent lnterest rate and a 50-year period of ccono~ic analysis. Alt
<br />cq<.li;>ment "'a~ replaced at the end of each 20-year period, ..Hh no
<br />salvage value. Replacement costs "'ere conqertcd to present worth and
<br />amortized <It 7.375 percent over the 50-year period of economic
<br />analysts.
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<br />DAM BREAK AND SNOWMELT DETECTION
<br />LartmerCounty offlcillls expreaseda conCern about detection of
<br />dam failure and sno",melt floods. The area of concern 18 to the ",cst of
<br />the cloudburst zone that ",ould be covered by the flash flood detection
<br />alternatives. One possible alternative would be a radto-reporting
<br />float type stream gage In the pool area of each dam and another &<IS"
<br />do..nstrealll from each dam. This would requi-rc e1ght g"ges for the four
<br />.ign1ficant dams upstteam froll1Spenccr HetghU. Another alte.rnative
<br />wOc!ld be a stream gage on Joe Wright Creek about 6 milea upstream from
<br />Spencer HeiJ:r;hts. 'Ihis gage would detect runoff from Joe wright,
<br />Chamber. Lake, and B3rnes ~eadow Reservoirs. Another g<lW' could be
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<br />iocated downstream from
<br />Cache la Poudre River.
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<br />Long Dr"'" Reservoir on the main stem of the
<br />'Ioprovide redundancy there should bea total
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<br />of 4 gages. The lo",,,st coat alternative "'o~ld be a "tream gage on the
<br />Cache la Poudre Rivet' about 3 IIltle. ~l>.tre"IIl fro~ Sl>""cer Heights just
<br />do~n.treaIll from the confluence of Joe ~rtght Creek "'ith the Cache la
<br />poudre IUver. Iht_ ,,It'''''dttve ,..". used tn t.:>.!>!c 2". Th~ ~q,d.r11lent
<br />for this alternative wouLd be located "ear Colot"do nigh",ay t4, an
<br />311-weather htghlo'''Y' 'Ihe equipment could thu_ be more r""dily
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<br />"al"t<llnedthroughouttl1eY";lr.
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<br />To provide Ndun~ancy, t"''' gnge~
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<br />should he u.ed. It 19 also e~titMted that tWO repe,1te"s "-,,uU be
<br />r.eeded to join "I' "Un the flash '..arntnj;.r<<dtll Mt',1Or~. A voice radio
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