TTuullaalliipp TTrriibbeess TTrriibbaall--//SSttaattee--LLeevveell HHaazzaarrdd MMiittiiggaattiioonn PPllaann April 2006 dXlilap faci;talbiX Tulalip Tribes Tribal-/State-level Hazard Mitigation Plan Prepared for The Tulalip Tribes of Washington Funded by Federal Emergency Management Agency Pre-Disaster Mitigation Program Application #: PDMC-10-WAIT004-2005 Agreement #: EMS-2005-PC-0009 & The Tulalip Tribes Prepared by The Tulalip Office of Emergency Management Lynda Harvey, Director of Emergency Management Lorelei Ranney, Administrative Assistant Primary Author & Editor: Glenn B. Coil, Project Consultant April, 2006 Special Thanks to: Chief J.A. Goss, Jr. Tulalip Tribal Police The Tulalip Tribes April 2006 Table of Contents Table of Contents ............................................................................................................... i List of Figures.................................................................................................................... v List of Tables ................................................................................................................... vii List of Acronyms.............................................................................................................. ix 1. Introduction............................................................................................................1-1 2. Planning Process....................................................................................................2-1 2.1. Preparation of the Plan.....................................................................................2-1 2.2. Plan Participants...............................................................................................2-2 2.3. Plan Preparation Timeline................................................................................2-3 Current planning process: ........................................................................................ 2-6 3. Community Profile.................................................................................................3-1 3.1. Tulalip Reservation History.............................................................................3-1 3.2. Geographic Setting...........................................................................................3-4 Lakes, Rivers and Streams.......................................................................................3-5 Hills and Mountains.................................................................................................3-5 Soils and Geology....................................................................................................3-6 3.3. Climate...........................................................................................................3-11 3.4. Land Use and Future Development Trends ...................................................3-11 Zoning and Future Land Use .................................................................................3-12 3.5. Demographics ................................................................................................3-21 3.6. Economy ........................................................................................................3-27 Development Trends..............................................................................................3-27 Industry ..................................................................................................................3-27 Occupation .............................................................................................................3-28 4. Risk Assessment.....................................................................................................4-1 4.1. Introduction......................................................................................................4-1 Hazards Profiled.......................................................................................................4-1 Summary of Vulnerability and Losses.....................................................................4-2 Methodology of Hazard Profiles..............................................................................4-5 4.2. Earthquakes......................................................................................................4-7 Definitions................................................................................................................4-7 General Background ................................................................................................4-7 Hazard Profile ........................................................................................................4-12 Secondary Hazards.................................................................................................4-20 Exposure Inventory................................................................................................4-21 Vulnerability ..........................................................................................................4-24 Loss Estimation......................................................................................................4-25 4.3. Flood ..............................................................................................................4-31 Definitions..............................................................................................................4-31 Hazard Mitigation Plan i April 2006 The Tulalip Tribes General Background ..............................................................................................4-34 Hazard Profile ........................................................................................................4-34 Exposure Inventory................................................................................................4-38 Vulnerability ..........................................................................................................4-39 Loss Estimation......................................................................................................4-40 4.4. Landslides ......................................................................................................4-45 Definitions..............................................................................................................4-45 General Background ..............................................................................................4-45 Hazard Profile ........................................................................................................4-47 Secondary Hazards.................................................................................................4-51 Exposure ................................................................................................................4-51 Exposure Inventory................................................................................................4-52 Vulnerability ..........................................................................................................4-53 Loss Estimation......................................................................................................4-56 4.5. Severe Weather ..............................................................................................4-71 Definitions..............................................................................................................4-71 General Background ..............................................................................................4-72 Hazard Profile ........................................................................................................4-73 Secondary Hazards.................................................................................................4-78 Exposure Inventory................................................................................................4-79 Vulnerability ..........................................................................................................4-79 Loss Estimation......................................................................................................4-79 4.6. Tsunami/Seiche..............................................................................................4-81 Definitions..............................................................................................................4-81 General Background ..............................................................................................4-81 Hazard Profile ........................................................................................................4-82 Secondary Hazards.................................................................................................4-85 Exposure Inventory................................................................................................4-85 Vulnerability ..........................................................................................................4-87 Loss Estimation......................................................................................................4-87 4.7. Wildland Fire.................................................................................................4-91 Definitions..............................................................................................................4-91 General Background ..............................................................................................4-91 Hazard Profile ........................................................................................................4-93