|
<br />:,
<br />
<br />NAU Sand Bar Studies
<br />
<br />Final Report
<br />
<br />TABLE OF CONTENTS
<br />
<br />Abstract,..."."""""""..,..""",.",.."""""""".."",."""""""",.,.""",..".".""""""".""""", """"""..,. I
<br />Acknowledgements ,.,..".."""" .",."."..,..",. .". ,."". """,. .",. ",','" .,. .,. .""".. ."". ,., .""" "".""""", """.3
<br />List of Tables ..,.. ......,....................,.. ........,.. ...... ..,......,.., ......,...., ..,.... ..,....... ......,.. ..,.... ............... ...... 4
<br />List of Figures "",. .".,..,..,.""" ,,'.,,'... ,."."."".. .,.,. ""..',..",. .", """.",.", '.' """. ..""".., ."".""..""""",.4
<br />Introduction,.."..,".".".".."""'."".".".."."'.,."'.""..""""""""".,.,.."."""'.."".,.,."""""..,."" ..,.""", 5
<br />Previous Studies,.."""""..",..",.",."",."""""""""..".,.,.""",.."..."""",.""""""""""""",."""""", , 6
<br />The 1997 Paria River Floods............,............,....,..,....,..,..,........,....,......................".....,......,..........., 9
<br />
<br />The 1997 Test Flow,..............,....,..........,................,.........,........,..........,..........,............,..,.......",....11
<br />Study Area and Methods ,..,....,......,..,...........,....................,..,..,..........,......,........,.................,......,..11
<br />Modeling Tributary Sand Inputs ....,..,....................,..........,..,......................,..,....,....,............,11
<br />Field Measurements of Bed and Suspended Sediment.....................,......,..............................12
<br />Field Studies in the 3-km Reach Downstream from the Paria River ....,........,....,....,........,....,12
<br />Field Studies at Sites in Marble Canyon ........,..,....................................,..............................,14
<br />The 1997 Paria River Floods: Deposition and Downstream Transport ..'..........,......,......,........,.... 15
<br />Deposition in the 3-km Reach Downstream from the Paria River..................,....,..........,..,.... 15
<br />Transport of Flood-Derived Sand From the 3-km Reach ............,..............,........................,..18
<br />Changes in Suspended Sediment Concentrations and Grain Size ,................................,........ 18
<br />Geomorphic Effects of the 1997 Test Flow..,....,........,..................,..,..,..............,......,................,.., 19
<br />Daily Changes in the 3-km Reach Downstream from the Paria River,..,......................,........, 19
<br />Changes in Suspended Sediment Concentrations and Grain Size ....,..............,..........,.........., 20
<br />High Elevation Sand Bar Changes ......,..........,..,.......,.."..,....................,......"......................,23
<br />Channel and Eddy Stored Sediment in Marble Canyon ,......,................,................,......................,27
<br />
<br />Discussion and Conclusions....,...",."..,.",.."....,....",..".""..""...",.,.,.",...",..""""...",.""",.."""", 30
<br />Management Implications "..",.."",..".".."".",.."". '.,."" .",. ,., ..",.., ,.."."..'""".,. .""..""..,..'",., ."", 32
<br />References"..",..",.."."."..,.,.."".",."....",..."."".""""..",.."".""".",..".""",.""".."""."",.",., ,,'.,.. 34
<br />
<br />i
<br />
<br />~. I
<br />::1
<br />
<br />i_:
<br />~:
<br />.
<br />
<br />.:-~
<br />!
<br />
<br />.>
<br />;~
<br />
<br />:.:.,
<br />
<br />:;
<br />
<br />I::
<br />
<br />.~.
<br />
<br />~.'
<br />
<br />!"'-,
<br />-
<br />
<br />~,~
<br />~'.
<br />~
<br />:~
<br />~
<br />':"1
<br />~
<br />ot
<br />~<!
<br />,.'
<br />
<br />>:
<br />~~~ ;
<br />
<br />2
<br />
|