Watershed Restoration and Enhancement Plan WRIA 10 - Puyallup-White Watershed FINAL DRAFT January 2020 Publication Information This document is available on the Department of Ecology’s website at: https://fortress.wa.gov/ecy/publications/summarypages/XXXXXX.html Cover photo credit Department of Ecology Related Information Contact Information Water Resources Program Southwest Regional Office P.O. Box 47600 Olympia, WA 98504-7600 Phone: 360-407-6300 Website1: Washington State Department of Ecology ADA Accessibility The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), Section 504 and 508 of the Rehabilitation Act, and Washington State Policy #188. To request an ADA accommodation, contact Ecology by phone at 360-407-6872 or email at [email protected]. For Washington Relay Service or TTY call 711 or 877-833-6341. Visit Ecology's website for more information. 1 www.ecology.wa.gov/contact Table of Contents List of Figures and Tables ...................................................................................................................................... vi Figures ...................................................................................................................................................................... vi Tables ....................................................................................................................................................................... vi Acknowledgements ............................................................................................................................................. vii Executive Summary ............................................................................................................................................... x Chapter One: Plan Overview .................................................................................................................................. 1 1.1 WRIA 10 Plan Purpose and Structure ......................................................................................................... 1 1.2 Requirements of the Watershed Restoration and Enhancement Plan ...................................................... 3 1.3 Overview of the WRIA 10 Committee ........................................................................................................ 4 1.4 Committee Structure and Decision Making ............................................................................................... 5 Chapter Two: Watershed Overview ....................................................................................................................... 7 2.1 Brief Introduction to WRIA 10 .................................................................................................................... 7 2.2 Watershed Planning in WRIA 10 ............................................................................................................... 10 2.3 Description of the Watershed – Geology, Hydrogeology, Hydrology, Streamflow, and Salmon Presence 12 Chapter Three: Subbasin Delineation................................................................................................................... 20 3.1 Introduction .............................................................................................................................................. 20 3.2 Approach to Develop Subbasins ............................................................................................................... 20 3.3 Subbasins .................................................................................................................................................. 21 Chapter Four: New Consumptive Water Use Impacts .......................................................................................... 24 4.1 Introduction to Consumptive Use ............................................................................................................ 24 4.2 Projection of PE Well Connections (2018–2038) ...................................................................................... 24 4.3 Impacts of New Consumptive Water Use ................................................................................................. 29 Chapter Five: Projects and Actions ....................................................................................................................... 35 5.1 Description and Assessment ..................................................................................................................... 35 5.2 Projects ..................................................................................................................................................... 35 5.3 Project Implementation Summary ........................................................................................................... 59 Chapter Six: Plan Implementation and Adaptive Management ............................................................................ 64 6.1 Plan Implementation and Adaptive Management Recommendations .................................................... 64 Chapter Seven: Net Ecological Benefit ................................................................................................................. 69 7.1 Water Offsets ........................................................................................................................................... 69 Page | iv WRIA 10 Watershed Plan FINAL DRAFT January 2021 7.2 Habitat Benefits ........................................................................................................................................ 73 7.3 Adaptive Management ............................................................................................................................. 81 7.4 NEB Evaluation Findings ........................................................................................................................... 81 Appendix A – References ....................................................................................................................................A-1 Appendix B – Glossary ........................................................................................................................................ B-1 Appendix C – Committee Roster ......................................................................................................................... C-1 Appendix D – Operating Principles..................................................................................................................... D-3 Appendix E - Aquifer Units in WRIA 10 ................................................................................................................ E-1 Appendix F– WRIA 10 Subbasin Delineation Memo ............................................................................................ F-1 Appendix G – WRIA 10 Permit-Exempt Growth and Consumptive Use Summary............................................... G-1 Appendix H – Projects ........................................................................................................................................ H-1 Appendix I – Washington Water Trust Report ..................................................................................................... I-1 Appendix J – Priority Streams for Water Right Acquisitions ................................................................................. J-1 Page | v WRIA 10 Watershed Plan FINAL DRAFT January 2021 List of Figures and Tables Figures Figure 1 Summary Map of Consumptive Use, Projects, and Offsets by Subbasin. ........................ xi Figure 2 WRIA 10 Vicinity Map with Land Uses .............................................................................. 8 Figure 3 WRIA 10 WRE Subbasin Delineation ............................................................................... 23 Figure 4 WRIA 10 WRE Distribution of Projected PE Wells .......................................................... 28 Figure 5 WRIA 10 Consumptive Use Estimate by Subbasin .......................................................... 34 Figure 6 WRIA 10 Water Offset Projects....................................................................................... 44 Figure 7 WRIA 10 Habitat Projects ................................................................................................ 57 Tables Table 1 WRIA 10 Membership ........................................................................................................ 4 Table 2 Salmonid Species and Status in the Puyallup River Watershed ....................................... 15 Table 3 Salmonid Presence and Life History Timing in Puyallup Watersheds .............................. 16 Table 4 WRIA 10 Subbasins ........................................................................................................... 21 Table 5 Number of PE Wells Projected between 2018 and 2038 for the WRIA 10 Subbasins..... 25 Table 7 Indoor and Outdoor Consumptive Use Estimates by Subbasin ....................................... 33 Table 8 WRIA 10 Offset Projects ................................................................................................... 38 Table 9 WRIA 10 Habitat Projects ................................................................................................. 46 Table 10 WRIA 10 Water Offset and Habitat Projects Cost Estimates ........................................