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<br /> <br />,.1 <br />. .,.. -, <br />, <br /> <br />I <br />i; :1 <br />--- i --i-:----l ~/: <br />" <br /> <br />Fi gure 1. <br /> <br />Zone Of Potential Pressure <br />Equal To 900 Ib/ft2 :43 kP,,: <br /> <br />This map of debris-flow drainage basins shows debris source areas <br />(large letters). Boulder-sized-sample localities (numbered), <br />locations used in calculating velocities and discharcJes (small <br />letters), debris-flow impact-pressure zones, and location of <br />suggested debris-catching structure fences. <br /> <br />o 400 <br />L I __--' <br />Feet <br />Meters <br />r-- I -----, <br />o 100 '200 <br /> <br />Zone Of Potential Pressure <br />Equal To 400 Ib/ft2 (19kPa) <br /> <br />, Proposed <br />\ Structural Debris- <br />Catching Fence <br /> <br /> <br />LL <br />