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I Ie i I I I I I I I . I I I I I I I f' I T ABLE OF CONTENTS (Continued) Page CHAPTER VII - DESIGN CONSIDERATIONS FOR HIGHWAY ENCROACHMENT AND RIVER CROSSINGS (Continued) 7.5.15 Gravel Mining on the Russian River, California 7.5.16 Nowood River and Ten Sleep Creek Confluence, Wyoming 7.5.17 Middle Fork Powder River, Wyoming 7.6 Overview Example Application I 7.6.1 General Situation 7.6.2 Flows, Stage and Stability 7.6.3 Abutment Protection 7.6.4 Scour at the Piers 7.6.5 Further Considerations 7.7 Overview Example Application 2 7.7.1 General Situation 7.8 Overview Example Application 3 7.8.1 General Situation 7.9 Overview Example Application 4 7.9.1 General Situation 7.9.2 Hydrology 7.9.3 Hydraulics 7.9.4 Spatial Design and Channel Geometry 7.9.5 Bed Material Size Distribution 7.9.6 Existing Bridges and Other Hydraulic Structures 7.9.7 Riparian Vegetation Information 7.9.8 Resistance to Flow 7.9.9 Sediment Transport Rates 7.9.10 Qualitative Geomorphic Analysis - Level One 7.9.11 Engineering Geomorphology - Level Two 7.9.12 Sediment Routing 100 Year Flood - Level Three 7.9.i3 Results of Analysis 7.10 Overview Example Application 5 7.10.1 Hydrologic Analysis 7.10.2 Channel Morphology 7.10.3 Moveable Bed Hydraulic Analysis 7.11 Concluding Remarks xi VII-55 VII-56 VII-56 VII-61 VII -61 VII -66 VII-71 VII-77 VII-79 VII-80 VII -80 VII-86 VII -86 VII -92 VII-92 VII - 94 VII-96 VII-99 VII-lOO VII-IOI VII-I02 VII -102 VII-102 VII-I03 VII-I 10 VII-112 VII-1l5 VII-123 VII-123 VII-125 VII-128 VII-I44