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® ~ <br />1;xp1,n11n~r1oN lug wnt' uNrrs <br />1s1 LniJU_51.11)E: A ]audCorm n•~.nlting From the nn,deratc Lu rapid, downward <br />Jsy nil•I outward movement of luck nod/nr soil wherl~ the n: i:~ a sur(arn <br />lr:l of tnpruro or zone of wrnl.nes:: thal scparaLCS the lanrlsli.de [rum <br />ware stable undcrlyint; material. Landslides, incLulinl; earthfluws, <br />n~sule [non tbo mass wnv~~meut of ruck and/ar soil iu response [u <br />gl nvllatinual ;:t nar.es :n~J these muv,tmenls rely affecC adjacent <br />duwn~:lupc :Yeas. tJntln~al or ucln-caused dir:curh.ulco of ]nud::l ldr. <br />arcnc could Intl i;llr ndJil lunal lust ability soul I~~n ::; muvcmcut. <br />Ifrlativc age of I:Ind::lld~~•: is Ludiratod by suh~:ct.ipl:: (1 is Cllc <br />youngc. :O. <br />mC NUDF1,041: an area subject to the rapt.d downslope movement of we[, <br />vi:;cous mosses uC tine-r;rnined material Eol]owinl; mobilization of <br />[he material 6y intense rainfall or snow-me_]t roue((. Mubilizaeion <br />usually iucludc: the erm;ion and transpose of poorly consolidated <br />sul fie ial materials that have acclnnulated in a drrlinage basin and <br />iu: channels. }'hysiograpllic features assuciarud with the mapped <br />mudfluw areas sup,gests mcent mudflnw acCi.vi[y and danger for an}' <br />structures placed lu [hr muJflow areas. <br />do U_ratltl5 nVALANC_IIN: e1oul;:Ite churc•-] ikc lnndfurmr: [hilt arc produced <br />by voly rapid slirlinl; :nI!I flow of nu~;uncd wi>;ciuc.s of soil and <br />rock mlterial down relntivcl.y steep slopes, IR:bri:: avalanches <br />occur during periods of intense raiuCall, IILIy Lravurse long <br />distances as debris flow:, over gent:lc slope:: hclnw mountainous areas, <br />and usually are aaocia[rd with rnchfalJ. areas. Nearly unprerlictablc <br />in Lime, debris avalanche:; arc a severe h:IZard Cur many land uses. <br />rf Rl1CKFn1.I,: an area subject to rapid, intcrmlrtcuC, nearly <br />uuprcdictahle n~ll.iug, sliding, ar (sec fallinf; of detached bedrock <br />of any s]ze Irum a cliff ur very steep slope. Itockfall areas must. <br />anumnnly occur uu sparsely vef;etatud areas having jointed bedrocl: <br />nlif(s and arc n serious, hazard Fur residential development and <br />rU.l(1 1 nIlS I.rUCL lr,n. <br />dtl UhltftlS_FAN: a tri•v,l;ular shaped lanrlform resulCing from the <br />df~ nccumulatlun of water-tl:ulspurted ruck, ::oil, and vegcention debris <br />u:nlally at Utc conClucnc~.: of a [ri6u[ary stream wleh a larger <br />drainnl;r. Uubri ; a/'.CIIIIIIIIJt1Ul1 grn~•rall.y i:: n:;sociclced with high- <br />doli~ity, rapid dcbri:: II~~.; that :Ire cnusod I,y periodic incense <br />rlin(al 1. 'f hr~se (low:: u~. r, c;ul•;c ~.c•ve rc daI1~:I l;e to nr destruction <br />nt man-mode :;Lluctures. Lelnt Ivr• a(;e of debris fnus .is indicated <br />by snhs,~.ript~• (I is the t~uun(;~.,:[). <br />t <br />.. _ .~ <br />