Water Management and Conservation Plan June 2017 FINAL REPORT Water Management and Conservation Plan Prepared for Medford Water Commission June 2017 Contents Section Page Acronyms and Abbreviations ..............................................................................................................vii 1 Introduction ......................................................................................................................... 1-1 Overview ....................................................................................................................................... 1-1 Plan Organization .......................................................................................................................... 1-3 Affected Local Governments ........................................................................................................ 1-3 Plan Update Schedule ................................................................................................................... 1-4 2 Water Supplier Description ................................................................................................... 2-1 Source ........................................................................................................................................... 2-1 Interconnections with Other Systems .......................................................................................... 2-1 Intergovernmental Agreements ................................................................................................... 2-1 Service Area Description ............................................................................................................... 2-2 System Description ....................................................................................................................... 2-5 Records of Water Use ................................................................................................................... 2-8 Terminology ..................................................................................................................... 2-8 System Demands ............................................................................................................. 2-9 Monthly Demands ......................................................................................................... 2-13 Peaking Factor ................................................................................................................ 2-20 Per Capita Demands ....................................................................................................... 2-20 Demand Factors for Overall System .............................................................................. 2-22 Demand Factors Inside City of Medford ........................................................................ 2-24 Consumption and Nonrevenue Water ........................................................................... 2-24 Customer Characteristics and Use Patterns ............................................................................... 2-26 Inside Medford, Outside, and District Customers ......................................................... 2-26 Customers Inside Medford ............................................................................................ 2-28 Water Rights ............................................................................................................................... 2-32 Water Law Introduction ................................................................................................. 2-32 MWC Water Rights ........................................................................................................ 2-33 Other City Water Rights ................................................................................................. 2-39 Aquatic Resource Concerns ........................................................................................... 2-40 Withdrawals ................................................................................................................... 2-41 Evaluation of Water Rights and Supply....................................................................................... 2-42 3 Water Conservation .............................................................................................................. 3-1 Current Conservation Measures ................................................................................................... 3-5 Use and Reporting Program ........................................................................................................ 3-10 Required Conservation Programs ............................................................................................... 3-10 Additional Conservation Measures ................................................................................ 3-10 Expanded Use Under Extended Permits ..................................................................................... 3-11 Expanded Use Under Extended Permit S-23210 ........................................................................ 3-11 Analyses of Potential New Conservation Measures ................................................................... 3-11 Water Reuse .................................................................................................................. 3-14 4 Curtailment Plan ................................................................................................................... 4-1 Overview ....................................................................................................................................... 4-1 Authority ....................................................................................................................................... 4-1 WT0401161125CVO III CONTENTS Section Page City of Medford Charter ................................................................................................... 4-1 Regulations Governing Water Service Handbook ............................................................ 4-1 Plan Implementation .................................................................................................................... 4-2 Water System Capacity Constraints and Historical Supply Deficiencies....................................... 4-3 Capacity Constraints ........................................................................................................ 4-3 Historical Supply Deficiencies .......................................................................................... 4-3 Curtailment Stages and Contact List ............................................................................................. 4-4 Curtailment Actions ...................................................................................................................... 4-6 Stage 1: Awareness of Potential Water Shortage ............................................................ 4-6 Stage 2: Potential Water Shortage Alert .......................................................................... 4-7 Stage 3: Water Shortage ................................................................................................ 4-10 Stage 4: Severe Water Supply Shortage ........................................................................ 4-13 Stage 5: Emergency Water Supply Disruption ............................................................... 4-15 Variances ..................................................................................................................................... 4-16 Penalties ...................................................................................................................................... 4-16 Appeals........................................................................................................................................ 4-17 Modifications .............................................................................................................................. 4-17 5 Water Supply Element .......................................................................................................... 5-1 Delineation of Service Areas ......................................................................................................... 5-1 Population Projections .................................................................................................................. 5-1 Water Demand Forecast ............................................................................................................... 5-5 Schedule to Exercise Permits and Comparison of Projected Need to Available Sources ............. 5-7 Alternative Sources ..................................................................................................................... 5-12 Greenlight Water Request and Quantification of Maximum Rates and Monthly Volumes ....... 5-12 Mitigation Actions under State and Federal Law........................................................................ 5-13 New Water Rights ....................................................................................................................... 5-13 6 References ............................................................................................................................ 6-1 Appendixes A Local Government Agency Correspondence B MWC WMCP Progress Report 2014 to Present C Conservation Measure Cost Benefit Analysis Assumptions IV WT0401161125CVO CONTENTS Section Page