Below Cathedral Wash Mile 3.5 to Mile 4.5 R3-00-BCH MILE 4 MILE 4 R4-00-BCH Four Mile Wash Four Mile Wash Pre-Spike Flow Survey River bed Textural Patterns Post-Spike Flow Survey River bed Textural Patterns r4-00-bch 1_A r4-00-bch 1_A MILE 3.2 Mile 4.4 Mile 4.3 0 100 200 meters 0 100 200 Old Navajo Bridge Lees Ferry Little Colorado River Phantom Ranch Lake Powell Paria River Navajo Bridge 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 -2 -4 -6 -8 -10 -12 -14 -15