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<br />Figures 13-15. <br />13. <br /> <br />14. <br /> <br />16A-35. <br />16A. <br /> <br />16B. <br /> <br />25A. <br /> <br />25B. <br /> <br />CONTENTS <br /> <br />Page <br /> <br />15. <br /> <br />Graphs showing: <br />Flood-frequency curves at station 06733000 Big <br />Thompson River at Estes Park, 1951-77------------------ 28 <br />Regional flood-frequency curve for Roaring River at <br />Horseshoe Falls, based on regional regression <br />equation of McCain and Jarrett (1976)------------------ 30 <br />Arrival time, peak time, and traveltime of leading <br />edge of flood wave of July 15, 1982-------------------- 37 <br />Photographs showing: <br />The Roaring River, looking upstream from the <br />Endovalley Road in 1978------------------------------- 38 <br />The Roaring River in 1982 after the flood, from <br />approximately the same location as in figure 16A------- 38 <br />The remains of a large debris dam in the Roaring River <br />valley near river mile 3.21---------------------------- 40 <br />Surveyed cross section in Horseshoe Park showing <br />topography of the flat glacial-lake floor. Looking <br />downstream at man standing at cross section at river <br />mile 5.36---------------------------------------------- 42 <br />The flood peak in the downstream end of Horseshoe Park--- 42 <br />The entrance to Aspenglen Campground downstream from <br />Cascade Lake dam through the campground area at river <br />mile 7.01---------------------------------------------- 43 <br />The Fall River valley downstream from Aspenglen Camp- <br />ground (aerial). View is upvalley from about river <br />mile 8.5----------------------------------------------- 44 <br />View downstream at the indirect discharge measurement <br />Site 4 on the Fall River above Estes Park-------------- 45 <br />The Fall River looking upstream from the western end of <br />Estes Park at river mile 11.9 (aerial)----------------- 45 <br />Elkhorn Avenue, Estes Park, looking downstream from <br />river mile 12.0 (aerial)------------------------------- 46 <br />View upstream at the arrival of the floodwaters at the <br />Big Thompson River at Estes Park gaging station <br />(Site 6) (aerial)-------------------------------------- 47 <br />View downstream at the Big Thompson River at Estes Park <br />gaging station (Site 6) during the peak flow (aerial)-- 47 <br />Deeply scoured reach in the Roaring River valley below <br />Lawn Lake dam at river mile 0.28----------------------- 49 <br />The Roaring River valley at river mile 1.14 (aerial)----- 49 <br />View downstream at river mile 0.55 on the Roaring River <br />valley in a scoured reach------------------------------ 50 <br />View across a mountain meadow at river mile 0.38, <br />showing the accumulation of a thick boulder deposit in <br />a relatively flat reach in the Roaring River valley---- 51 <br />Imbricated structure in boulders deposited in the meadow <br />shown in figure 29------------------------------------- 52 <br />Unusually thick sand waves deposited in the Roaring River <br />valley on the inside of a sharp valley bend at river <br />mile 0.50---------------------------------------------- 52 <br /> <br />17. <br /> <br />18. <br /> <br />19. <br />20. <br /> <br />21. <br /> <br />22. <br />23. <br />24. <br /> <br />26. <br /> <br />27. <br />28. <br /> <br />29. <br /> <br />30. <br /> <br />31. <br /> <br />v <br />