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<br />Table of Contents (continued)
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<br />6.3,3, Channel Migration Rates and Cutoffs",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,...,,,,,,,,,,,,,,,,,,,,..,, 41
<br />6.4, Effective Discharge and Morphologic Change.....",.."".."..""..",..,,,,,,,,,,,,,,..,,,,.. 41
<br />6,5, Geomorphic Evolution..""""".,,,,,,,,.,,,,,,,,,,,,,,,..,,,,..,,,,,,,,,..,,,....,,,..,,,,,,,,"",,,.,,.,,.43
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<br />7, Hydraulics and Sediment Transporl.".",,,..,,.,,,,,,,....,,,,,,,,,,,..,,,,,.....,,,,,,,,.,,..,,,,..,,.,,,,,47
<br />7,], Site Selection ,,,,,,,,,,,,..,,,,,,,,,,,,,,,,,,,,,,,,,,,,..',,,,"....,,..",,,,..,,,,".....,,...,,,,"..",,..,,...,, 47
<br />7,2, Hydrologic Influence on Sediment Transport"""""""..""..",.."...""",.."".."".., 48
<br />7,2,1, Event Discharges """..""""",....",,,..",,,"..,,..,,,,,,,,,,,,,,,,,,..,,,..',,,,..,,,,,,,..",,.. 48
<br />7 ,2.2, In-Channel Discharges,.."",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,..,,",,,,,,,,..,..,, 53
<br />7,3, Hydraulic Analysis",,,,,..,,,,,,,,,...,,,,,..,,...,,,,,,,,,,..,, '""..,,,,,,,,,,,,,,,,...,,,,.,,,,,,,,,,...,,..' 54
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<br />7 ,3,1, Methods"",,,,,,,,,,,.,,,,,,,,,,,,,,,,,,,,..,,,,,,,,,,,..,,,,,,,,,,,,,,,.,,,,,,,,,,,,,,,..,,,..,,,,,,,,,,,,,,,, 54
<br />7,3,2, Model Construction and Calibration..",,,,,,,..,,...,,,,,,,..,,,,,,,,.......,,,,,,,,,,,..,,.... 55
<br />7,3,3, Hydraulic Modeling Results"~,,,.,,,,,,,,,,..,,..,,,,.,,,,,,.,..,,,,,,,,,,,,,,,,,..,,,,,,,,,,,,,... 57
<br />7.4, Incipient Motion Analysis"",,,,,,,,,,,,,,,,,,,,,,,..,,,,,,,,,,,,,,,,,,,..,,,,,,,,,,,,,,,,,,,,,""",,,,..,, 65
<br />7.4,1. Determination of the Dimensionless Shield's Parameter """""..."".."..'",.. 66
<br />7.4,2, Reach Average Incipient Motion Results and Analysis """"....,..",,,,,..",,..' 67
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<br />7 ,5, Conclusions",,,,,,,,..,,,,,.., """ '"'' '''''''''' ",,,,, ",,,,,..,, "..""",.." '" ..,,,,,,,..,,,,,,, ".. ,.."", 74
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<br />8, Channel Stability and Potential for Erosion or Exposure of Mine Waste ,..",,,,,,,,,,,.75
<br />8, I , Floodplain/Terrace Configurations ,,,,,,,,,,,,,,..',"'''''''''''''''''''''''''''''''''''''''''',..,,',.. 75
<br />8.2, Subreach 1: Upstream of California Gulch (RM 10,9-12) ..,,,..,,,,,,,,..,,,..,,,,,,..,,,,, 76
<br />8.3, Subreach 2: California Gulch to Lake Fork (RM 9,2-10,9)"""""""...",,,,,..,,,,,.. 76
<br />8A, Subreach 3: Lake Fork to Railroad Bridge (RM 7,0-9.2)""""..""""""""""....." 79
<br />8.5. Subreach 4: Railroad Bridge to Hwy 24 Bridge (R.M 5,5-7,0),,,,,,,..,,,,,,,..,,..,,,,,, 81
<br />8,6, Subreach 5: Hwy 24 Bridge to Big Union Creek (RM 3.3-5,5).."""""...",..",,,.82
<br />8.7, Subreach 6: Big Union Creek to Hwy 55 Bridge (RM 2.1-3.3)"""""..,,,,,,,,,...,, 86
<br />8,8, Subreach 7: Hwy 55 Bridge to bedrock constriction (RM 0-2.1)..""",..""".."... 89
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<br />9, Process-Based Treatment Alternatives ."",,,,,,,,,,.,,,,,,,,,,,,,,,,,,,,,,..,,,,,,,,,...,,,,,,,,,,,,,,,,,,91
<br />9, I, Tailings Entrainment Processes ,,,,,,,,,,,,,,,,,,,,"""'''''''''''''''''''''''''''''''''''''''''''''''''' 91
<br />9,2, Alternatives Development """,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"'"'''''''''''''''''''' 91
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<br />9,2,1, Bank Protection,..,,,,,...,,.....,,..,,,..,,...,,,,..,,,..,,,,,,,,,,,,,,.,,,,.,,,,,,...,,,,,,,,,,,,,.,,..,,.92
<br />9,2.2, Migration Corridor""""",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,..,,,,..,,,,,,,..''''''''''" 92
<br />9,2.3, Alternative 3: Compound Channel ".."..".........'",..",..",..'"..'"",,,.....,,..,,,,,, 95
<br />9,2.4, Relocation of Perched Channel Threads"""""""",,,,,,,,,,,,,,,,,,,,,,,,,,..,,,,,,,,... 99
<br />9,2,5, Channel Relocation..""...",,,,,,,,,,,,,,,,,,,,,,,,.,,,,,,,,.,,,,,,,,,,,,,,,,,,,,,,,......,".."""" 99
<br />9,2,6, Modification of Floodplain Topography""""".."""""",.."""""".."",..".. 100
<br />9,2,7, Modification of Augmentation Patterns""",,,,,....,,,,,,,..,,,..,,..,,,,..,,...,,,,..,,.. 100
<br />9,2,8. Floodplain Bankline Vegetation Enhancement '''",.."..",.." ,..",..".."'.."".. 100
<br />9,2,9, Grazing System Modifications ,,,..,,...,,,,,,,,..,,,,,,,,,,,,,,,.......,,..',,...,,..",,,..,,.. 100
<br />9,3, Subreach-based conceptual treatments ..".."",,,,..,,..,,,,,..,,,..,,,,,,,,..,,,..,,,..,..,,,,,,.. 103
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<br />9.3, I, Subreach 1 """""",,,,,,,,,,,,,,,,,,,,,,,,,,,,"""'"'''''''''''''''''''''''''''''''''''''''''''''''''' 103
<br />9.3 ,2, Subreach 2 ",,,..,,,,,,,,,,,,"..""..",,,,,,,,,,,,,,,,,,.',,,,,,,,,..',,,."..,,....',..,,,..,..".."".. 103
<br />9,3.3, Subreach 3 ",,,,,,,,,,,,,,,,,"..,,.,,,,,,,,,,,,,,,,,,..',,..',,..",,..',,..',,,,.,,,,,'.....,,,..""..".. 1 03
<br />9,3 A, Subreach 4 ",,,,,,,,,,..,,,,,,,.,,,,,,.,,,,,,,,,,,,,,..,,,..,,,,.,,,,,..,,,,,,,,,,,,,,,,,..,,,",,'"'''''''' 103
<br />9,3.5. Subreach 5 ,,,"..",,..,,,,,,.,,,,,,,,...',,,,,,,.."..',,,..',,,,"....',,,..,,,,,,,,,,,'.","""..,..".. 1 04
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<br />9,3,6, Subreach 6.., ""'"'''' ."" '" "'''''''''''' "",., ,"""""'''''''' ,",,' ",' ''',' """....,.." ,,,, ,.. 104
<br />9.3,7, Subreach 7 ",,,,,,,,,,,,..,,,..,,,.".,,..,,,,,,,,,,,,....,,,,,,,,,,,,,,,,,,,,,,,,..,,,..,,,,,,,..""..'"" 104
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<br />May 7, /999
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<br />Fluvial Geomorphological Assessment
<br />Upper Arkansas River
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