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<br /> <br />:u~~.-- ~ - '::: <br /> <br />Preliminary Data - Subjed to Review and Revision 03/03104 <br /> <br /> <br />Southwest Biological Science Center - GCMRC - <br /> <br />. , . . . . . . <br />; "Take Home Messages <br /> <br />SAND INPUTS & TRIGGERS Paria River <br />SilIId1nputs were'below levels required for <br />EHF'irigger, ;;$;.;2// as th~ l"tngger req~i,.ed <br />, for 8,000 cfs vs low.fl'I!,'tuatingflow <br />comparison in Sept & October (close, but not <br />quite there) <br /> <br />SAND BAR UPDATE Bar volumes in Upper <br />Marble Canyon are less than measured in 1990 <br />and continue to erode within both the active <br />fluctuating and high-elevation zones. <br /> <br />Bar volumes between 8,000 and 25,000 cfs are <br />less than 1990 conditions except at sites <br />between rm 65 and 104, while high-elevation <br />volumes below rm 40 are still higher than 1990 <br /> <br /> <br />02333 3 <br />