East Contra Costa County Integrated Regional Water Management Plan Update 2013 November 2013 East County Water Management Association CONTRA COSTA WATER DISTRICT City of Pittsburg East Contra Costa County Integrated Regional Water Management Plan Update The East County Water Management Association (ECWMA) will soon begin to update its Integrated Regional Water Management Plan (IRWMP), originally developed in June 2006. The Update is being funded by the ECWMA agencies and a planning grant from the California Department of Water Resources. An IRWMP is a collaborative effort to manage all aspects of water resources in a region. IRWMPs cross jurisdictional, watershed, and political boundaries; involve multiple agencies, stakeholders, individuals, and groups; and attempt to address the issues and differing perspectives of all the entities involved through mutually beneficial solutions. The East Contra Costa County IRWMP Update will consist of: Updating the document to the lastest guidelines and standards, including the development of new integrated projects Developing a plan for groundwater and salt/nutrient management in the Pittsburg Plain Basin Continuing public outreach, including to disadvantaged communities More information about IRWMPs may be found at http://www.water.ca.gov/irwm/. If you would like more information about the IRWMP Update or would like to participate in upcoming public meetings, please contact Marie Valmores at [email protected]. Contra Costa County November 17, 2001 Creek and Watershed Symposium http://www.eccc-irwm.org/ East County Water Management Association CONTRA COSTA WATER DISTRICT City of Pittsburg East Contra Costa County Integrated Regional Water Management Plan Update The East County Water Management Association (ECWMA) will soon begin to update its Integrated Regional Water Management Plan (IRWMP), originally developed in June 2006. The Update is being funded by the ECWMA agencies and a planning grant from the California Department of Water Resources. An IRWMP is a collaborative effort to manage all aspects of water resources in a region. IRWMPs cross jurisdictional, watershed, and political boundaries; involve multiple agencies, stakeholders, individuals, and groups; and attempt to address the issues and differing perspectives of all the entities involved through mutually beneficial solutions. The East Contra Costa County IRWMP Update will consist of: Updating the document to the lastest guidelines and standards, including the development of new integrated projects Developing a plan for groundwater and salt/nutrient management in the Pittsburg Plain Basin Continuing public outreach, including to disadvantaged communities More information about IRWMPs may be found at http://www.water.ca.gov/irwm/. If you would like more information about the IRWMP Update or would like to participate in upcoming public meetings, please contact Marie Valmores at [email protected]. Contra Costa County November 17, 2001 Creek and Watershed Symposium Table of Contents Contents Chapter 1. Introduction ........................................................................................................... 1-1 1.1. Purpose ......................................................................................................................... 1-1 1.1.1. Background .............................................................................................................. 1-1 1.2. IRWM Process ............................................................................................................. 1-2 1.3. Document Organization ............................................................................................... 1-3 1.4. IRWM Plan Standards ................................................................................................. 1-4 Chapter 2. Region Description................................................................................................. 2-1 2.1. The East Contra Costa County Region ........................................................................ 2-1 2.2. History of Regional Planning ...................................................................................... 2-1 2.2.1. The DWR IRWM Regional Process ........................................................................ 2-4 2.3. Governance .................................................................................................................. 2-7 2.3.1. Governing Board Representatives ........................................................................... 2-7 2.3.2. Scope ........................................................................................................................ 2-8 2.4. Description of Internal Boundaries .............................................................................. 2-9 2.4.1. Region ...................................................................................................................... 2-9 2.4.2. Member Agencies .................................................................................................. 2-13 2.4.3. Other Water-Related Agencies within the Region ................................................. 2-26 2.4.4. State Agencies Collaborating with the Region ...................................................... 2-29 2.5. Description of Social and Cultural Makeup .............................................................. 2-30 2.5.1. Demographics ........................................................................................................ 2-30 2.5.2. Demographic Analysis of Contra Costa County in 2009 and 2019 ....................... 2-31 2.5.3. Age ......................................................................................................................... 2-31 2.5.4. Ethnicity ................................................................................................................. 2-32 2.5.5. Gender .................................................................................................................... 2-32 2.5.6. Economic Industry ................................................................................................. 2-32 2.5.7. Disadvantaged Communities ................................................................................. 2-33 2.6. Description of Watersheds and Water Systems ......................................................... 2-41 2.6.1. Watersheds ............................................................................................................. 2-41 2.6.2. Infrastructure .......................................................................................................... 2-46 2.7. Water Supplies and Demands .................................................................................... 2-52 IRWM Plan i November 2013 East Contra Costa County Table of Contents 2.7.1. Current and Projected Water Demands .................................................................. 2-52 2.7.2. Current and Projected Water Supplies ................................................................... 2-56 2.7.3. Comparison of Water Supplies and Demands ....................................................... 2-63 2.8. Climate Change Vulnerability Assessment ............................................................... 2-64 2.8.1. Handbook Approach .............................................................................................. 2-65 2.8.2. Water Supply ......................................................................................................... 2-67 2.8.3. Water Demand ....................................................................................................... 2-67 2.8.4. Flooding ................................................................................................................. 2-68 2.8.5. Water Quality ......................................................................................................... 2-68 2.8.6. Ecosystem and Habitat Vulnerability .................................................................... 2-69 2.8.7. Energy .................................................................................................................... 2-70 2.8.8. Further Data Gathering and Analysis..................................................................... 2-71 2.8.9. Climate Change Mitigation and Adaptation Strategies.......................................... 2-71 2.9. Water Quality ............................................................................................................. 2-72 2.9.1. Delta Water Quality ............................................................................................... 2-72 2.9.2. Groundwater Quality ............................................................................................. 2-73 2.9.3. Recycled Water Quality ......................................................................................... 2-73 Chapter 3. Plan Development .................................................................................................. 3-1 3.1. Planning Framework .................................................................................................... 3-1 3.1.1. Background .............................................................................................................. 3-1 3.1.2. ECCC IRWM Plan 2013 Update Process ................................................................ 3-2 3.2. Objectives ...................................................................................................................