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CONTENTS <br />FOREWORD ....................................................... <br />ABSTRACT ........................................................ 1 <br />1 INTRODUCTION ................................................. 1 <br />2 METHODS ...................................................... 4 <br />2.1 Riparian Field Studies ......................................... 4 <br />2.2 Aerial Videography ............................................ 4 <br />3 RESULTS ................................................... 6 <br />3.1 Vegetation of Riparian Zones .................................... 6 <br />3.2 Areas of Riparian Zones ........................................ 7 <br />4 ASSESSMENT OF POTENTIAL EFFECTS ON RIPARIAN VEGETATION ..... 8 <br />4.1 Assessment Approach .......................................... 8 <br />4.2 Expected Responses of Riparian Vegetation <br />to Operational Scenarios ........................................ 10 <br />4.2.1 Year-Round High Fluctuation ............................... 10 <br />4.2.2 Seasonally Adjusted High Fluctuation ........................ 10 <br />4.2.3 Seasonally Adjusted Moderate Fluctuation ..................... 11 <br />4.2.4 Seasonally Adjusted Steady Flow ............................ 11 <br />5 DISCUSSION .................................................... 13 <br />6 REFERENCES ................................................... 29 <br />APPENDIX: Data Collected along Green River Transects, June 1992 ............ 31 <br />FIGURES <br />1 Maximum and Minimum Flows for Four Flaming Gorge Dam <br />Hydropower Operational Scenarios .................................. 14 <br />2 Photographs of the Riparian Zone in Five Different Reaches <br />of the Green River below Flaming Gorge Dam, June 1992 ................ 15 <br />3 Map of the Green River between Flaming Gorge Dam and Jensen, Utah, <br />Showing the Major Reaches Evaluated in This Study .................... 16 <br />V