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<br />DAMAGE ASSESSMENT <br /> <br />Direct dJma~es are tilo~e damage, which occur to the stru(:ture and its' co~tent only, <br /> <br />Th~ ;tuJj Me" waS diyided into ~il1e (9) n=od,~, ac(u"Jiny to lIl~ S~VIJt vf '~ork. <br />These reaches are defined as follows: <br /> <br />, <br />" <br />1, <br />), <br />, <br />5, <br />6, <br />), <br />D, <br />9, <br /> <br />and are Cd 1 eulated based 011 flood depths. Indirect damages are tho~e dama~es ...hieh <br />include the cost of lost business and services during the timeofcl eanupandre- <br />pa i r. Some of t~ese indirect damages i~clude: The loss of sale" loss of units, <br /> <br />Confl uenee wi th Cache La Poc;dre R her up~ tream of Timber 1 ine ~oad. <br />Timberline Road to LeMay Ayenue. <br />LeXay A~enue to Stover Street. <br />Stover Street to College Avenue. <br />College Avenue tc C~S Rail road. <br />etS Railroad to Shields Street. <br />Shields Street to rlewMercerCanal. <br />Nel'i Mercer Cdnal to Pleasant '1alley and lake Cafid1. <br />Pleasant Valley and lake Canal to Korsetooth Road. <br /> <br />lo,saftdXr€venues, loss Of intl'rest on disaster loans, lossoftrdnsp;lrtation <br /> <br />rO.lte" th~ cost of flood fighting and pol icing along wi th rel ief acti yities ~nd <br /> <br />healtMservi(e,. Also included in indirect damages isa cost for inconyenicncedue <br /> <br />to lost public services. Indirect da~ges are very difficult to identify and esti- <br />mate and were based on percentages of property yalues as presented in Reference 22. <br />These percentages are thirty-five percent (35%) in corrmercial or light industrial <br /> <br />The object of this evaluation is to identify the average annual flood damage poten- <br />tial within each study reach. Through the construction of channel irnprovements, <br /> <br />these damages CM ~e ellmlnated or greatly reduced and iir'e the ITldJor benefit re- <br /> <br />urc"~, Jrrd f: fteen ;:crcent (1St) in res i clentia 1 areas. <br /> <br />sulting from the drainageway improvement. <br /> <br />A detailed hydraulic analysis was conducted, resulting in deter~ination of the <br />yelocity, width and depth of flooding for' the 2-year, 1G-year, 25-year, lOa-year and <br />SOD-year flood events. Potential flood damages for structures within the study redC~ <br />were estimated using damage cu~~es de~eloped by the Federa 1 lnsu.ance ,~dministration <br />(FIA) (Reference 22) ~nd cur~es dl!veloped at Color~do State Ulliyersity (Rl!ference <br />2 3j . These curve~ taDul area darrlage dS a percent ot tou] structure va I ue cased <br /> <br />Outlined ill Table 9 is dalllage cune inforoation for each reach with cOrm'erchl light <br />industrial aile: residential properties calculated separately. The effects of high <br /> <br />velocities, which inr;rl!asepotential damages, weretdken intOdcc ount where appli- <br /> <br />cablebyaddingthpl'elocltyhcadlotlLl.'uepthofrlowatastruchre. <br /> <br />Property Yol ue infOf'lllation was prQ~ idl!d by Shannon & Associates Real Estate Apprais- <br />1:'1'$ Jr.d Co~~ulta~t~ (Reference 21). This information included a rictodal ~,~oy on <br />~evera 1 reac he~ ~ 1 orlg the study reecho For each reach, s tructc;re~ and property <br />within the flOOdplain wp.re identified and appraised on a dollar per square foot basis. <br />Adetailedsurmlaryofthi,informatioTl i, included in the Technical Addendum. <br /> <br />upurof1ooddepthabQve the structure's ground f100d level. <br /> <br />FrOITIficldinvestigatior>s, fir,tf1[)urelevotionsofstrllcture,withinthefloodpldin <br />were estimated in relat.ion to 0,1' adjacent ground. Strc;ctures loavin!J basements l'oel'e <br />al so ide~ti fied. In addition, fronl these field visits, eleyation of mobile ,omes <br /> <br />A graphica 1 displaY of J~erage dnnua 1 damages determined for each reach is presented <br /> <br />f~ fi~ures 7, 8 ~~d 9. The ~~e" urder the curves rpprp<"nts tlw av"r'~" ~nn"al <br /> <br />atove adj acent gro~nd '~'eo'," est im.ated. Sto.uctures within the f1 oodplain incl ude: <br />a~proximate]y ninety residentia I bui ldings; one-hundred and thi rty mObile nomes; <br /> <br />darnage po tential in do 11 a r~ per year. These fi gures show tna t pot~n t i a 1 damage 1 S <br />minirr,J. 1 for the 2-year event in a 11 reaches. Significant dar<lges for the lOO-y~ar <br /> <br />fifty-one Imits ~'ithin ~N).t"'ent bJildi:lgS. condomir.ic;,"s and to.;r,horr:es; thirty-tl'oo <br />co~"'ercial structures; ~ix grain ele,'ators, a tr~e n~r$cry '-\lld a po~'cr substation. <br /> <br />"~ent o(~ur, in r>'ilcMf's 2, t. ~nd 8. rlo d.1lllages occur in Reach 1 fer J 11 floQd c.'ents. <br /> <br />Ave-aqe a;H!l<al ddmd'~es dele,.~.ined (or ea~h of the nine rPdC.~"S ,lnd for the St,Hty ar"" <br /> <br />as d woolI' are presented in Table 10. <br /> <br />-34- <br /> <br />,35 <br />