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TABLE OF CONTENTS 1.0 INTRODUCTION............................................................................................................1 2.0 Existing creek conditions.................................................................................................1 2.1 Habitat Conditions.........................................................................................................1 2.2 Jurisdictional Areas........................................................................................................4 2.3 Flood Control Conditions ..............................................................................................4 3.0 DESIGN GOALS AND OBJECTIVES.........................................................................4 3.1 Habitat Recreation .........................................................................................................4 3.2 Flood Control.................................................................................................................4 3.3 Stable Channel Design...................................................................................................5 4.0 DESIGN CONSIDERATIONS AND METHODOLOGIES .......................................5 4.1 Hydrologic Considerations............................................................................................5 4.2 Hydraulic Considerations ..............................................................................................6 4.3 Channel Slope and Depth ..............................................................................................6 4.4 Vegetation Class Concepts and Management................................................................7 5.0 CHANNEL RELOCATION AND RESTORATION PROJECT DESCRIPTION 10 5.1 General Stream Corridor Geometry.............................................................................10 5.2 Geomorphic Considerations ........................................................................................10 5.3 Meander Plan Form......................................................................................................10 5.4 Hydraulic Analyses......................................................................................................1 l 5.5 Riparian Habitat Creation............................................................................................13 5.6 Planting Plan................................................................................................................14 5.7 Irrigation Plan..............................................................................................................15 6.0 MAINTENANCE CONSIDERATIONS......................................................................15 6.1 Vegetation Management..............................................................................................16 6.2 Selective Clearing........................................................................................................17 6.3 Criteria for Selective Clearing.....................................................................................18 6.4 Species Diversity and Structural Complexity..............................................................19 6.5 Uneven Class Management......................................................................................19 6.6 Successional Stage...................................................................................................20 6.7 Controlling Willow Growth.........................................................................................20 6.8 Best Management Practices for Controlling Sprouting...............................................21 6.9 Pruning,thinning, Clearing, and Sprout Removal.......................................................21 6.10 Vegetative Management for Aquatic Resources and Fisheries...............................22 6.11 Natural Debris..........................................................................................................23 APPENDICES Appendix A-Wetland Delineation Appendix B - HEC-RAS Outputs Appendix C- Vegetation Management Questa Engineering Corporation i 270124CDR/November 16, 2007