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Table of Contents <br />List of Tables .......................................... .............................iv <br />..... iv <br />................ <br />List of Figures ........................:. .... <br />.......... <br />..... v <br />List of Photos .......................................... ........................ <br />.... v <br />List of Appendices ...................................... ......................... <br />..... vi <br />List of Key Words ....................................... ........................ <br />... vi <br />Project Funding and Support .............................. .......................... <br />..... vi <br />Acknowledgments ...................................... ........................ <br />CHAPTER I INTRODUCTION ....................................................... 1 <br />.................................................... <br />Project Goals and Objectives 1 <br />Site Descriptions .............................................................. 2 <br />Bureau of Land Management Sites ............................ ~ • ~ ~ • ' ' ~ ~ • ~ ~ 11 <br />Ouray National Wildlife Refuge Sites ...................................... . <br />CHAPTER II SUMMARY OF 1996 FIELD DATA COLLECTION EFFORT .................... 18 <br />Establishment of River Cross Sections and Survey Control ............................ 18 <br />Cross Sections Surveys ....................................................... 18 <br />Topographic Surveys " " . ' ... " ~ ~ " .. 18 <br />Stage/Discharge Data Collection ................................................ 19 <br />Overbank and Bottomland Flooding Observations (1996 Runoff Season) ................. 20 <br />Bureau of Land Management Sites ......... . .............................. 20 <br />• Ouray National Wildlife Refuge Sites ....................................... 21 <br />CHAPTER III RIVER HYDROLOGY .................................................. 25 <br />Peak Flows, Mean Annual Flows and Base Flows ................................... 25 <br />. 26 <br />.. <br />...... <br />Peak Discharge Frequency ............................................ <br />Flow Duration ............................................................... 26 <br />Flows During 1996 Runoff Season ............................................... 30 <br />CHAPTER IV BOTTOMLANDS HYDRAULICS AND HYDROLOGY .......................... 31 <br />General Nature of Bottomland-River Interaction ...................... ............... 31 <br />. 31 <br />Stage/Discharge Relationships .................................. ............... <br />31 <br />Bureau of Land Management Sites ........................ ................ <br />38 <br />Ouray National Wildlife Refuge Sites ....................... ................ <br />38 <br />Determination of Current Flooding Bankfull Discharge ................ ................ <br />38 <br />Bureau of Land Management Sites ........................ ................ <br />48 <br />Ouray National Wildlife Refuge Sites ....................... ................ <br />49 <br />Area of Inundation as a Function of Discharge ...................... ................ <br />49 <br />Bureau of Land Management Sites ........................ ................ <br />51 <br />Ouray National Wildlife Refuge Sites ....................... ................ <br />CHAPTER V PROPOSED LEVEE REMOVAL .......................................... 53 <br />......... 53 <br />Design Objectives ................................................... <br />Site by Site Levee Removal Strategy ............ 55 <br />Bureau of Land Management Sites ...................::...::::::::::::: . 55 <br />Ouray National Wildlife Refuge Sites .................. ~ 57 <br />iii <br />