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<br />C~1788
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<br />Table of Contents (continued)
<br />
<br />List of Tables
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<br />Table 4, I Project subreaches,,,,,,,,,,,,,,,,..,..,,,......,,,,,..,..,..,,,,...."',,,,,,,,,,,,"',,,,,",,,,,,,,,,,,,,,,,23
<br />Table 4,2 Profile and planform characteristics of project subreaches """'"'''''''''' """"" 24
<br />Table 4,3 Cross-section characteristics of project sub reaches """".."'....""...."""...."..", 27
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<br />Table 6,1 Measured channel sinuosity: 1939, 1957, and 1996,,,,,,,,,,,,,,,..,,..,,....,,,,..,,..,,, 38
<br />Table 6,2 Historic split flow conditions: ] 939, 1957, and 1996"",,,,,,,,,,,,,..,,,,..,,....,,,,,,, 38
<br />Table 6,3 Measured low flow topwidth, 1939, 1957, 1996 """...,,,..,,,,,,,,,,,....",,..",,,,,,,.. 40
<br />Table 6,4 Relationships between bankfull discharge, effective flow (4% duration), and
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<br />channel morphology",,,,,, ",''''','',' ''',,',' "..", "''','' '"'''''' ,.. "'"",.........." ,,,..,,,, "'" ".."" 44
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<br />Table 7.1 Summary of reach study sites...."...."",,,,,....,,,,...,,,,....,,,.....,,,,,,.."'.......,,,,..,,,, 48
<br />Table 7,2 Annual peak discharges used in incipient motion analyses....",,,....,,..,,..,,....,, 53
<br />Table 7,3 1M Site average bankfull discharges and associated recurrence intervals....", 54
<br />Table 7,4 1M Site flow distribution for modeled recurrence intervals ..",,,..,,..,,,,,,"'"'''' 55
<br />Table 7,5 Manning's n-value calculated using the slope area procedure, "..",.""...""..,. 56
<br />Table 7,6 Reach average hydraulic characteristics,,,..,,,,,,,,,......"',,,,,,,,.."',,,,....,,,,,,,,,,,,,.. 61
<br />Table 7,7 Shield's parameter calibration .. ".. ""'" " " " " " "" " 'm.... ".... """ " "..".. ".. " " "'''' 67
<br />Table 7,8 Shield's parameter comparisons ""....".. "'" " "" " " ".."........ ".. "'.......",,.. " "".. , 67
<br />Table 7,9 Site averaged incipient motion characterization""".."".."""",..."'"....""","'. 68
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<br />Table 8,1 Entrainment potential, project subreaches ......""""....."""."".."""......'""..",, 79
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<br />Table 9,1 Example compound channel geometry, Subreach 2""""'..."..".........""",..,,.. 97
<br />Table 9,2 Example compound channel geometry, Subreaches 3-7 .".......",;"".."..""..'" 98
<br />
<br />List of Plates
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<br />Plate I Coarse sediment contribution from left bank terrace, Subreach 2.."..""."""..", 25
<br />Plate 2 Fine tailings deposit on left bank bar surface, Subreach 2 ".........."......:"..,,",.... 25
<br />Plate 3 Piling revetment just upstream of Lake Fork confluence, Subreach 2 ..,,,.,,....,,.. 26
<br />Plate 4 Mouth of Lake Fork Creek, and main stem Arkansas River ........,...".."'".",...." 26
<br />Plate 5 Local split flow/channel braiding, Subreach 3 "",,,..,,....,,,.,.,.,,....,,..,,......,,....,,...28
<br />Plate 6 Sediment distribution on bar surface, Subreach 3 ,..."'..:..............,,,,.....,,,.,,......'" 28
<br />Plate 7 Active bank undercutting/channel widening, Subreach 3..,,,,,......,,,,.,,,,,,,,,,,,.."',, 29
<br />Plate 8 Active bank erosion /channel widening, Subreach 4........,,,,,,,,.."',,,,.......,,,,,,,,'" 29
<br />Plate 9 Perched woody debris on small island, Subreach 4 """'""'..."....,"..."......,,,,,....., 31
<br />Plate I 0 Sediment accumulation at split flow confluence, Subreach 4 ....,,,.."'.,,.."',....,,, 31
<br />Plate II Coarse bar substrate overlain by phytotoxic tailings deposits, Subreach 5 ",.... 32
<br />Plate 12 Relatively stable channel planform, Subreach 7"......""".,."......"""........."....... 32
<br />
<br />May 7, 1999
<br />
<br />Fluvial Geomorphological Assessment
<br />Upper Arkansas River
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<br />Page v
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