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Hydrolo�y <br /> "I'he behavior of water in the system is analyzed in the study of hydrology. llefined as <br /> "the ueas which are seasonally inundated and/or satarated to the surface for a <br /> consecutive number oi days greater than or equal to 12.5°/a of the growing season", (WA <br /> State Ecology 1947)hydrology is quantified in spatial(azea)terms.The Seattle District <br /> of the Army Corps of Engineers(1987)use a temporal(time) slandazd by requiring 14 <br /> consecutive days oF inundation er saturation during the growing season to qualify <br /> �veHand hydrology. <br /> Determining the presence of adequate hydrology to create hydric conditions aze <br /> confirmed from both records and site analysis.Records of the US Geological Sivvey, <br /> state,and county agencies concerned with flood control, local survey data, the N2CS <br /> Small Watershed projects,and planning documents of developers,arr,all viable sources <br /> of information. Pield indications of hydrology include: <br /> 1. Visual observation of inundation or saturation, <br /> 2. Watermarks on woody vegetation. <br /> 3. Drift lines fortned by debris channeled by the flow of water. <br /> 4. Sediment deposits indicating solids suspended in water were held in onc <br /> location long enough to settle from suspension. <br /> 5. Drainage pattems indicated by scoured soils and transported debris. <br /> (. Oxidized rhizospheres surrounding living roots. <br /> 7. Water-stained leaves. <br /> 8. FAC Neutral test(Ecology 1997)Used where hydrologi:al evidence is weak, it <br /> utilizes vegetative analysis lo infer the presence of nec��;sary hydrology. <br /> Strcum Analysis <br /> Current stream classifications as established in local code presumes the prescnce of <br /> salmonids based on channel widths,gradients,and relative size of the contributing basin. <br /> These classifications however must be confirmed in lhe field to establish current <br /> applicability.Establishing said applicability is performcd lhrough the following criteria <br /> L Records search of knowledge base as.ecorded with WA. Statc Fish and <br /> Wildlife Dept, local jurisdiction,and neighborhood permitting. <br /> 2. Field documentation of currently identificd fish passage barricrs. <br /> 3. Field confirmation of channel gradicnts on site as available. <br /> 4. Analysis of watenvay conncctivity. <br /> G <br />