Surface Water Management Division

Snohomish River Comprehensive Flood Control Management Plan

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Report Cover and Table of Contents (464 Kb pdf download)

Chapter 1- Overview (366 Kb pdf download)

Chapter 2- Plan Development (264 Kb pdf download)

Chapter 3- Snohomish Basin Hydrology and Flood Protection System (697 Kb pdf download)

Chapter 4- Land Use, Economic Analysis and Environmental Resources (521 Kb pdf download)

Chapter 5- Programs, Policies and Regulations Related to Flood Protection and Floodplain Management (918 Kb pdf download)

Chapter 6- Analysis of Existing Levee System (367 Kb pdf download)

Chapter 7- Background and Development of the Plan (793 Kb pdf download)

Chapter 8- Final Plan Elements (1 Mb pdf download)

References (108 Kb pdf download)

Appendix A- Snohomish River Gage Relationships and Flood Frequency Analysis (334 Kb pdf download)

Appendix B- Snohomish River Hydraulic Model Description (108 Kb pdf download)

Appendix C-  Levee Design and Maintenance Standards (408 Kb pdf download)

Appendix D- Land Use and Economic Survey (149 Kb pdf download)

Appendix E- Levee and Dike System Coordination Agreement with Planned Levee Profile (1.2 Mb pdf download)

Appendix F- Flood Fight Policies (206 Kb pdf download)

Appendix G- Coordinated Diking Council Interlocal Agreement (249 Kb pdf download) Note: The original interlocal agreement was reauthorized in 2010.

Appendix H- Summaries of Scoping Meetings (301 Kb pdf download)

Appendix I- Emergency Management Certification (58 Kb pdf download)

Appendix J- Summary of Environmental Impact Statement (663 Kb pdf download)