Laserfiche WebLink
<br />,-~ <br />I! <br />i i ANALYSIS TECHNIQPES <br />,j ! -' - r 1,-/" 1 <br />I . I -1'-.; - I r'l r S';; .-' <br />...r" j ~ ,.! -I ' <br /> <br />1- <br />,-,.- <br /> <br />. Sediment continuity analysis is an integral <br />part of the engineering analysis. <br />. Sediment continuity defines vertical <br />channel adjustments on a reach by reach <br />basis. <br />. Must relate these vertical channel <br />adjustments to lateral migration potential. <br /> <br />~- <br /> <br />~I"r <br />L <br />I <br /> <br />!' <br />--, <br /> <br />A_CASESTUDY.f, <br />- r /~,/, ; - <br />r" , " , <br />j! -1 j;' - <br /> <br />i.r,,-_ <br /> <br />. Description of drainage area <br /> <br />r~ <br />I <br />~j <br /> <br />A_CASE STUDY, <br />-1'-, -I ri-d Jf(' i <br /> <br />, <br />1__,-_ <br /> <br />#!"" <br /> <br />. Descriptj')f; of drainage are:l <br />. Results of Erosion Risk Study <br /> <br />fi EROSION, RI,SK <br />BOUND,ARIES t. <br />r r I ,-r ' ' ! f'('~ - <br />! [ j .J--. ~ -; I t-j: - <br />;~. 'i .... 1 ~I I'" : l '-_1_. <br /> <br />. Based on short tenn erosion and flooding, <br />and long term erosion the erosion risk <br />boundary can be drawn. <br />. Boundary can be drawn as a smooth <br />curve, or as a series of tangent lines. <br /> <br />JI~~~~~~~AJf~~~O <br /> <br />,...; . .. '-;;"; l;_r-_.i <br /> <br />. Located west of Albuquerque, NM. <br />. Drainage area 100 square miles. <br />. Channel length about 5 miles. <br />. Channel slope 1-1.5% <br />. lOO-yr discharge about 12,000 cfs <br /> <br />, rr'~~~Y!~FJ~1~S <br /> <br />r-(' '! -'" 1 -j I j : .! '-'l_ <br /> <br />. Channel cross section data and floodplain <br />mapping from FEMA. <br />. Comprehensive geomorphic <br />reconnaissance and field data collection. <br />. Sediment analysis based on 10 subreaches <br />(about 3000 ft each). <br />. Short term migration about 160 ft. <br />. Long term migration about 176 ft. <br />