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Chapter 6:Hazard Analysis—Landslides and Rock Falls <br /> / l <br /> LOW MEDIUM HIGH <br /> x- N!"\.x,w, SLOPE HAZARDS . nw....... <br /> G-�--i- ttG�JJJ�� <br /> SURFICIAL GEOLOGY <br /> r c sn.Iio.xat �an�P..0 Awoy..bp.xl <br /> XISTORIG XAZAROS <br /> vw�x.ea.e ao.tuw.a.uu <br /> .bpx.ua <br /> ]xy.N.ua.YydN��Y <br /> - Grs.P..'...M X\ale hax+nui <br /> MMLD.iM\1MI�\� may.rsx x..�lml mmuwe. xmY <br /> Figure 6-3. Slope hazards and soil types on Hawaii Island <br /> Soil moisture: The HAZUS MH4 slope hazard methodology considers soil moisture as either <br /> wet or dry, with wet soils posing increased slope hazard. Soil moisture assignments are <br /> derived from recent NOAA rainfall mapping of the island since regional groundwater and <br /> soil moisture data is unavailable island wide. Areas receiving greater than 2000 mm annual <br /> precipitation are considered wet soil, corresponding largely to the windward side of the <br /> island. In addition, coastal areas below elevation 200' are considered wet due to potential <br /> groundwater seepage gradients from higher elevations, except in the and Kona coast areas. <br /> 6-5 Hawaii County Multi-Hazard Mitigation Plan <br />