DRINKING WATER SYSTEM MASTER PLAN September 2017 TABLE OF CONTENTS TABLE OF CONTENTS ................................................................................................................. i ACKNOWLEDGMENTS .............................................................................................................. iv PROJECT TEAM ......................................................................................................................... iv GLOSSARY OF TECHNICAL TERMS ........................................................................................ vi ABBREVIATIONS ....................................................................................................................... vii Executive Summary ................................................................................................................. viii CHAPTER 1 - PURPOSE AND SCOPE ................................................................................... 1-1 MASTER PLANNING PURPOSE ........................................................................................... 1-1 EXISTING BRWCD SERVICE AREAS .................................................................................. 1-2 MASTER PLAN SCOPE OF WORK ...................................................................................... 1-3 PUBLIC PROCESS ................................................................................................................ 1-3 CHAPTER 2 - BOX ELDER COUNTY POPULATION PROJECTIONS ................................... 2-1 PLANNING PERIOD .............................................................................................................. 2 - 1 GROWTH PROJECTIONS..................................................................................................... 2-1 Average Historical Growth Projection ................................................................................. 2-1 State of Utah Projections .................................................................................................... 2 - 1 Potential for More Rapid Growth ......................................................................................... 2-1 Rapid Growth Scenario ....................................................................................................... 2-2 COMPARISON OF POPULATION PROJECTIONS .............................................................. 2-4 CHAPTER 3 - PUBLIC PROCESS (BY THE LANGDON GROUP) .......................................... 3-1 INTRODUCTION .................................................................................................................... 3-1 STAKEHOLDERS INPUT....................................................................................................... 3-1 Stakeholders Interviewed .................................................................................................... 3-1 Stakeholder Kick-off Meeting .............................................................................................. 3-2 Key Stakeholder Committee Report-Back Meeting ............................................................ 3-2 Information Gathered from the Stakeholder Interviews ...................................................... 3-2 WATER SUPPLY AGENCY INTERVIEWS ............................................................................ 3-4 Goals of Water Agency Interviews ...................................................................................... 3-4 Summary of Information Gathered ...................................................................................... 3-5 CHAPTER 4 - WATER SUPPLY AND DEMAND ..................................................................... 4-1 INTRODUCTION .................................................................................................................... 4-1 OUTREACH INTERVIEWS .................................................................................................... 4-1 AVAILABLE DRINKING WATER SUPPLIES ......................................................................... 4-1 WATER SUPPLY AND DEMAND ANALYSES ...................................................................... 4-2 Calculations Methodology ................................................................................................... 4-2 Data Sources ...................................................................................................................... 4-3 Data Precision ..................................................................................................................... 4-3 Drought Effects on Water Supply ........................................................................................ 4-3 Limiting Factor .................................................................................................................... 4-3 Dependable Peak Day Supply ............................................................................................ 4-5 WATER SHORTAGE HORIZON ............................................................................................ 4-6 Build-Out Projections .......................................................................................................... 4-8 CHAPTER 5 - BEAR RIVER DEVELOPMENT (BY BOWEN COLLINS & ASSOCIATES) ..... 5-1 INTRODUCTION .................................................................................................................... 5-1 Bear River Water Conservancy District i Master Plan BEAR RIVER PROJECT BACKGROUND ............................................................................. 5-1 BRWCD FACILITIES AT FULL DEVELOPMENT OF BRP .................................................... 5-2 BRWCD EARLY DEVELOPMENT OF BRP WATER ............................................................. 5-3 CHAPTER 6 - CONSERVATION .............................................................................................. 6-1 INTRODUCTION .................................................................................................................... 6-1 PER CAPITA USAGE ............................................................................................................ 6-1 CONSERVATION STRATEGIES ........................................................................................... 6-3 CHAPTER 7 - EXTENDING EXISTING GROUNDWATER SUPPLIES .................................... 7-1 INTRODUCTION .................................................................................................................... 7-1 OPTIONS TO EXTEND EXISTING GROUNDWATER SUPPLIES ....................................... 7-1 CHAPTER 8 - BRWCD SERVICE AREA MASTER PLANNING .............................................. 8-1 INTRODUCTION .................................................................................................................... 8-1 Projects to be Implemented Within 0 - 10 Years ................................................................. 8-1 Projects to be Implemented Within 10 – 20 Years .............................................................. 8-1 Projects to be Implemented Beyond 20 Years .................................................................... 8-1 PRECISION OF COST ESTIMATES ..................................................................................... 8-1 SYSTEM IMPROVEMENT PROJECTS ................................................................................. 8-5 REFERENCES ......................................................................................................................... R-1 APPENDICES A Stakeholders List B Water Supply Analyses C Cost Estimate Calculations Bear River Water Conservancy District ii Master Plan LIST OF TABLES NO. TITLE PAGE 4-1 Water Suppliers’ Future Service Capacity 4-4 4-2 BRWCD Service Areas Future Service Capacity 4-5 4-3 Build-Out Projections 4-8 5-1 BRWCD Facilities Required at Full Development of BRP 5-3 6-1 Incorporated Cities and Towns Residential Per Capita Water Use 6-1 6-2 Unincorporated Areas Residential Per Capita Water Use 6-2 6-3 BRWCD Service Areas Per Capita Water Use 6-2 8-1 Master Planned Projects 0 – 10 Year Time Frame 8-3 8-2 Master Planned Projects 10 – 20 Year Time Frame 8-4 8-3 Master Planned Projects Beyond 20 Year Time Frame 8-5 LIST OF FIGURES NO. TITLE PAGE 2-1 County Population (U.S. Census) 2-3 2-2 Projected Decade for Rapid Growth After 2-4 2-3 Box Elder County Population Growth Estimates 2-5 3-1 Stakeholder Kickoff Meeting Input – Water Priorities 3-3 3-2 Stakeholder Kickoff Meeting Input – Water Improvement Strategies 3-3 3-3 Stakeholder Water Planning Preferences 3-4 4-1 Water Shortage Horizon 2020 After 4-6 4-2 Water Shortage Horizon 2020 After 4-6 4-3 Water Shortage Horizon 2020 After 4-6 4-4 Water Shortage Horizon 2020 After 4-6 4-5 Water Shortage Horizon 2020 After 4-6 4-6 Supply vs. Demand – Peak Day Flow 4-6 4-7 Supply vs. Demand – Ave Annual Volume 4-7 5-1 BRWCD Facilities for the Bear River Project at Full Development After 5-1 8-1 Master Planned Projects – Northern Area After 8-1 8-2 Master Planned Projects – Southern Area After 8-1 Bear River Water Conservancy District iii Master Plan ACKNOWLEDGMENTS We sincerely appreciate the cooperation and assistance provided by many agencies and individuals including those listed here. Bear River Water Conservancy District Voneene Jorgensen – General Manager BRWCD Board Richard Day – Trustee Tyler Vincent – Trustee Jay Carter – Trustee Roger Fridal – Chairman Jeff Scott – Trustee David Forsgren – Vice Chairman Russell Howe –