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<br />APPENDIX I <br /> <br />Appendix 1. list of geomorphlcelly-slgniflcanttrlbutary canyons of the Colorado River in Grand Canyon <br />(modified from Mells and others, 1994) <br /> <br />[Tributary names are taken from U.S. Geological Survey 7.5-minute quadrangle maps and river guides (Stevens, 1990), or are <br />infonnally used. Drainage area was digitized from 1 :24,000 scale quadrangle maps. Rapid names are usually taken from Stevens <br />(1990) or are informal; rapids not included are Nixon Rock (99.9) and Lower Lava Falls (179.7). Rapid ratings are for a 10,000 tt3/ <br />5 discharge (Stevens, 1990). Water-surface fall is from U.S. Geological Survey survey data collected in 1923 that was adjusted to <br />a 10,000 tt3/s discharge. U.S. Geological Survey 7.5-minute quadrangle map refers to the tributary juncture with the Colorado <br />River. (-), indicates no dala, that tributary is unnamed, or that no rime or rapid exist at the site.] <br /> <br />River mile <br />and side <br /> <br />1\"lbutery neme <br /> <br />Dralnege <br />area <br />(km') <br /> <br />Rapid neme <br /> <br />Repld <br />fating <br /> <br />Weter <br />surfece <br />lell(m) <br /> <br />7.S.mlnute USGS <br />quadrangle name <br /> <br />REACH 0: GLEN CANYON <br /> <br />-14.9 L 2.01 Page <br />-13.0 L Honey Draw 33.72 Page <br />-11.5 R 6.84 Ferry Swale <br />-11.3 R Ferry Swale Canyon 91.80 Ferry Swale <br />-9.8 L Ninemile Draw 3.70 Ferry Swale <br />-9.0 L 13.87 Ferry Swale <br />-6.7 R 6.87 Lees Ferry <br />-6.5 R 0.25 Ferry Swale <br />-6.4 R 1.66 Ferry Swale <br />-6.3 R 1.95 Lees Ferry <br />-6.2 R 0.35 Lees Ferry <br />-5.6 L 0.20 Lees Ferry <br />-5.4 L 0.93 Lees Ferry <br />-5.4 R 0.14 Lees Ferry <br />-5.2 R 0.18 Lees Ferry <br />-5.1 L 0.34 Lees Ferry <br />-5.1 R 0.62 Lees Ferry <br />-4.1 L Water Holes Canyon 66.54 Unnamed riffle 0.31 Lees Ferry <br />-3.3 R 0.30 Lees Ferry <br />-3.2 R 0.15 Lees Ferry <br />-3.1 R 0.16 Lees Ferry <br />-3.0 L Cave Canyon 18.49 Lees Ferry <br />-2.5 L Fall Creek 34.08 Lees Ferry <br />-2.1 L 0.44 Lees Ferry <br />-2.0 R 0.43 Unnamed rime 0.31 Lees Ferry <br />-1.7 L 0.94 Lees Ferry <br />-1.5 L 0.54 Lees Ferry <br />-1.4 L 0.58 Lees Ferry <br />-0.3 R 0.35 Lees Ferry <br />-0.2 L 0.71 Lees Ferry <br />-0.1 L 0.96 Lees Ferry <br />-0.1 R 0.47 Lees Ferry <br /> <br />APPENDIX I 43 <br />