TABLE of CONTENTS Chapter 1 Introduction & Scoping
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CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy TABLE OF CONTENTS Chapter 1 Introduction & Scoping Introduction 1-1 Physical/Biological Characteristics 1-2 Erosion Hazard 1-4 Geology/Soils 1-5 Climate/Precipitation 1-6 Vegetation/Land Cover 1-7 Fire 1-9 Water Quality/Quantity/Uses 1-9 Animal/Plant communities 1-14 Economy 1-15 Public and Agency Scoping 1-16 Initial Scoping 1-16 Final Objectives 1-27 Resource Issues 1-36 Desired Future Conditions 1-37 Chapter 2 Data Collection Assessment Plan 2-1 Issues/Objectives/Resources 2-1 Watershed Assessment Goals 2-9 Resource Assessment Themes 2-11 Assessment Approach 2-12 Data Assemblage Phase 1 First Generation GIS Products & System 2-15 US Forest Service 2-15 Additional First Generation Products 2-44 Phase 1 Conclusion 2-47 Phase 2 Second Generation GIS Products 2-47 Subwatershed Delineation 2-48 GIS-Based Subwatershed Analysis/Ranking 2-50 Watershed Assessments Geology 2-74 Soil-Water Routing 2-100 Channels 2-125 Erosion Hazard 2-140 Phase 3 Third Generation GIS Products 2-145 Placer County Fire Safe Council GIS Assessment 2-145 Greater Auburn Area FSC GIS Map Assessment 2-147 Placer Hills FSC GIS Map Assessment 2-148 Greater Colfax Area FSC GIS Map Assessment 2-149 Alta FSC GIS Map Assessment 2-150 Iowa Hill FSC GIS Map Assessment 2-151 Foresthill FSC GIS Map Assessment 2-152 GIS System 2-152 Additional Watershed Assessment and Data Analysis 2-153 Table of Contents Page 1 CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy Human History in the Watershed 2-153 Census Demographics 2-159 Biomass Utilization (Amesbury) 2-166 Hydrology Study (Humphrey) 2-186 Chapter 3 Watershed Evaluation Introduction 3-1 Agency Review 3-1 Federal 3-2 US Forest Service (USFS) 3-2 Bureau of Land Management (BLM) 3-8 Natural Resource Conservation Service (NRCS) 3-13 State 3-17 California Department of Forestry (CDF) 3-17 Resource Conservation District (RCD) 3-21 Local 3-24 El Dorado County 3-24 Nevada County 3-36 Placer County 3-46 Stewardship Opportunities Common to All Agencies 3-65 Non-governmental Organizations 3-67 Chapter 4 Stewardship Strategy Introduction 4-1 Programmatic ARWG Stewardship Strategies 4-3 Landowner Component 4-3 Commercial/Business Component 4-6 Agency Component 4-9 Field Strategies 4-13 Firesafe Ecosystem 4-13 Sediment 4-24 Education 4-26 Data Management & Capacity-Building 4-30 Resource Inventory 4-33 Chapter 5 Pilot Projects Introduction 5-1 Pilot Project #1- Bunch Canyon 5-2 Bunch Canyon Pilot GIS Analysis 5-4 Applied Stewardship Strategies 5-7 Programmatic 5-8 Field 5-10 Table of Contents Page 2 CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy Pilot Project #2 - Upper Middle Fork American 5-13 Middle Fork Pilot GIS Analysis 5-16 Applied Stewardship Strategies 5-20 Programmatic 5-20 Field 5-22 Chapter 6 Evaluation/Monitoring Project Evaluation 6-3 Stewardship Program Objectives 6-3 Watershed Health/Conditions Objectives 6-6 Monitoring Implementation-Accomplishments to Date 6-9 Appendices 7 Appendix A Phase I GIS Soil-Water Routing Hand Calculations Appendix B Phase I GIS Available Water Capacity Appendix C Phase I GIS USFS Metadata Appendix D Phase II GIS ARWG Metadata example (each coverage or grid has metadata in ArcCatalog) Appendix E Placer Legacy Draft Strategy for the Conservation of Biological Resources Appendix F A Guide to Placer County Ecological Zones Appendix G A Watershed-Based Approach for Setting Conservation Priorities in Nevada County, CA Appendix H Biomass Utilization Background Material Forest-Sourced Biomass Utilization Table of Contents Page 3 CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy List of Maps & Figures Map # Map Name Page Map 1-1 ARWG Area Shaded Relief Map 1-1 Map 1-2 Fifth Field Watershed Boundaries 1-2 Map 2-1 Change Detection 2-18 Map 2-2 Cities, Towns & Other Landmarks 2-21 Map 2-3 80-Ft Contour Interval 2-21 Map 2-4 Major Vegetation Covertypes 2-22 Map 2-5 Fire Frequency 2-25 Map 2-6 Bedrock Geology 2-27 Map 2-7 Government Administrative Boundaries 2-30 Map 2-8 Mining Sites and Features 2-30 Map 2-9 Placer Co. Prop. 204 Projects 2-31 Map 2-10 Quad Index 2-32 Map 2-11 Average Annual Precipitation 2-32 Map 2-12 Rain on Snow Zone 2-33 Map 2-13 Wilderness, Wild & Scenic Rivers and Roadless Areas 2-33 Map 2-14 Road System 2-37 Map 2-15 General Landscape Incision 2-39 Map 2-16 Streams 2-39 Map 2-17 Fifth Field Watershed Boundaries 2-41 Map 2-18 Road Density for Sixth Field Watersheds 2-43 Map 2-19 Relative Fast Runoff Potential 2-45 Map 2-20 Available Water Capacity I 2-45 Map 2-21 Delayed Runoff Potential [superceded by Map 2-45] Map 2-22 Groundwater Recharge [superceded by Map 2-46 and 2-47] Map 2-23 Erosion Hazard Potential [superceded by Map 2-52 & 2-54] Map 2-24 American River Region Calwater Watersheds & 500-Acre Subwatersheds 2-49 Map 2-25 American River Region: Watershed Zones 2-53 Map 2-26 American River Region: Subwatershed Scores 2-56 Map 2-27 American River Region: Sierra Nevada Ecosystem 2-57 Report Areas of Late Successional Emphasis Map 2-28 American River Region: Blue Oak Woodlands 2-59 Map 2-29 American River Region: Mines in Subwatersheds 2-65 Map 2-30 American River Region: California Natural Diversity 2-67 Database Threatened and Endangered Species Map 2-31 American River Region: Mean Parcel Size 2-69 Map 2-32 American River Region: Subwatershed Road Density 2-70 Map 2-33 American River Region: Relative Road Density 2-70 Normalized by Ecological Zones Map 2-34 American River Region: Roads in Streamside Zones 2-70 Map 2-35 Geology II 2-74 and 2-83 Map 2-36 Generalized Watershed Incision 2-36 Map 2-37 Bedrock Permeability first approximation 2-86 Map 2-38 Potential Geochemical Hazards: Low-sulfide 2-92 Table of Contents Page 4 CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy gold-quartz deposits Map 2-39 Potential Geochemical Hazards: Sulfide deposits, 2-92 kuroko type Map 2-40 Potential Geochemical Hazards: Copper 2-92 porphyry deposits Map 2-41 Potential Geochemical Hazards: Copper skarn deposits 2-93 Map 2-42 Potential Geochemical Hazards: Anthropogenic mercury 2-93 Map 2-43 Soils: Relative Direct Runoff Potential 2-111 Map 2-44 Soils: Available Water Capacity II 2-113 Map 2-45 Soils: Relative Subsurface Stormflow Runoff Potential 2-113 Map 2-46 Soils: Relative Groundwater Recharge Potential 2-115 Map 2-47 Potential Groundwater Recharge: Soil and Geologic 2-115 Parameters Map 2-48 Precipitation Regime 2-135 Map 2-49 Dominant Channel Forming Runoff Regime 2-135 Map 2-50 Dominant Channel Forming Runoff Regime: Global 2-135 Warming Scenario Map 2-51 Wildland Fire: Potential Intensity 2-140 Map 2-52 Erosion Hazard: Soil & Slope Parameters 2-141 Map 2-53 Precipitation Intensity: 2 year – 6 hour Storm 2-141 Map 2-54 Erosion Hazard: Soil & Precipitation Parameters 2-141 Map 2-55 Wildland Fire: Potential Erosion Hazard 2-142 Map 2-56 Placer County Fire Safe Councils: Vegetation Types 2-146 Map 2-57 Placer County Fire Safe Councils: Fuel Hazard Ranking 2-146 Map 2-58 Greater Auburn Area Fire Safe Council Base Map 2-147 Map 2-59 GAAFSC: Contour Map 2-147 Map 2-60 GAAFSC: Elevation Schematic 2-147 Map 2-61 GAAFSC: Fire History 2-147 Map 2-62 GAAFSC: Fuel Model ` 2-147 Map 2-63 GAAFSC: Fuel Hazard Ranking 2-147 Map 2-64 GAAFSC: Ownership 2-147 Map 2-65 GAAFSC: Placer County General Plan Zoning Designation 2-147 Map 2-66 Placer Hills Fire Safe Council: Base Map 2-148 Map 2-67 PHFSC: Contour Map 2-148 Map 2-68 PHFSC: Elevation Schematic 2-148 Map 2-69 PHFSC Fire History 2-148 Map 2-70 PHFSC: Fuel Model 2-148 Map 2-71 PHFSC: Fuel Hazard Rank 2-148 Map 2-71 PHFSC: Ownership 2-148 Map 2-73 PHFSC: Placer County General Plan Zoning Designation 2-148 Map 2-74 Greater Colfax Area Fire Safe Council: Base Map 2-149 Map 2-75 GCAFSC: Elevation Map 2-149 Map 2-76 GCAFSC: Historical Fires 2-149 Map 2-77 GCAFSC: Fuel Model 2-149 Map 2-78 GCAFSC: Fuel Hazard Ranking 2-149 Map 2-79 GCAFSC: Ownership 2-149 Map 2-80 GCAFSC: Placer County General Plan Zoning Designation 2-149 Map 2-81 Alta Fire Safe Council: Base Map 2-150 Table of Contents Page 5 CALFED Category III Grant 98E14 American River (North and Middle Forks) Integrated Watershed Plan and Stewardship Strategy Map 2-82 AFSC: Elevation Schematic 2-150 Map 2-83 AFSC: Fire History 2-150 Map 2-84 AFSC: Fuel 2-150 Map 2-85 AFSC: Fuel Hazard Map 2-150 Map 2-86 AFSC: Ownership 2-150 Map 2-87 AFSC: Placer County General Plan Zoning Designation 2-150 Map 2-88 Iowa Hill Fire Safe Council: Base Map 2-151 Map 2-89 IHFSC: Elevation Schematic 2-151 Map 2-90 IHFSC: Historical Fires 2-151 Map 2-91 IHFSC: Fuel Hazard Ranking 2-151 Map 2-92 IHFSC: Fuel Model 2-151 Map 2-93 IHFSC: Ownership 2-151 Map 2-94 IHFSC: Placer County General Plan Zoning Designation 2-151 Map 2-95 Foresthill Fire Safe Council: Base Map 2-152 Map 2-96 FFSC: Elevation Schematic 2-152 Map 2-97 FFSC: Historical Fires 2-152 Map 2-98 FFSC: Fuel Model 2-152 Map 2-99 FFSC: Fuel Hazard Rank 2-152 Map 2-100 FFSC: Ownership 2-152 Map 2-101 FFSC: Placer County General Plan Zoning Designation 2-152 Map 2-102 Colfax and Placer Hills Fire Safe Councils: Census Population and Tracks versus Blocks 2-163 Map 2-103 Colfax and Placer Hills Fire Safe Councils: Census Data: Households per Block 2-164 Map 2-104 Colfax and Placer Hills Fire Safe Councils: Census Data: Households with presence of people over 65 years 2-165 Map 2-105 BestBet Map 1: Biomass Supply and Business Location Map 2-173 Map 2-106 BestBet Map 2: Biomass Modeling Results Map Bunch Canyon Assessment Area (Bunch Canyon Pilot) 2-173 Map 2-107 BestBet Map 3: Biomass Modeling Results Map PCWA Assessment Area (Upper MF Pilot 2-174 Map 2-108 BestBet Map 4: Biomass Modeling Results Map Firesafe Council Assessment Area 2-175 Map 2-109 BestBet Map 5: Potential Future Projects Within Assessment Area 2-177 Map 2-110 Middle Fork American River USGS Gage Station No.