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<br /> <br />FIGGRE 6. Riprap on left bank of Sacramento River at E-lO near Chico, <br />California, showing initial effect of particle erosion. Survey rod at <br />approximate location of original bank !me. Scarp face (cross-hatched <br />area, between 15-foot mark on rod and tripod leg) is approximately <br />1 foot high (photographed February 1, 1983). <br /> <br /> <br />I <br />! <br />I <br />l <br />, <br />i <br /> <br />FIGVRE 7. Riprap on left bank of Sacramento River at E-10 near Chico, <br />California, showing advanced stage of particle erosion. Survey rods <br />held at approximate location of original haDk.liDe.. Nate only the <br />largest stOReS, as compared with the well-~d diatribution in <br />figure 5, have not been displaced (photographed May 2, 1983). <br /> <br />13 <br /> <br />