South Coast

Bringing Water and Land Use Together

Local Government Commission | April 11th, 2019

In 2005, the California Legislature passed new laws that enable communities to join together to adopt Integrated Regional Water Management (IRWM) policies and practices.

In 2005, the California Legislature passed new laws that enable communities to join together to adopt Integrated Regional Water Management (IRWM) policies and practices. This comprehensive planning approach considers water resources in the context of an interconnected watershed with a network of regional governance, rather than as a combination of fragmented parts. Unfortunately, the IRWM program is dominated by the water sector and in most regions has not pursued alignment with land use. Similarly, the Sustainable Communities Strategies (SCS) mandated through SB 375 establish a framework for aligning land use practices (predominantly housing and transportation) across jurisdictions within a larger geographic region. Yet very few SCSs have taken water resources into account. While water management and land-use planning remain highly fragmented across the state, we are making progress toward a more integrated approach, especially when setting new state-level policies, regulations and guidance. The 2014 Sustainable Groundwater Management Act (SGMA) is a leap forward in this direction. For the first time, local land use agencies have an opportunity to be full partners with water agencies in shaping groundwater governance. It is too soon to determine how well these two sectors are integrating under SGMA, but early results are promising.

Building water resilience in the face of cascading wildfire risks

American Association for the Advancement of Science (AAAS) | September 15th, 2023

Bulletin 118 - California's Groundwater Update 2013

California Department of Water Resources (DWR) | April 15th, 2015

California’s Groundwater Update 2013 compiles and analyzes readily available groundwater information to characterize California’s groundwater basins, aquifers, and we

California’s Groundwater Update 2013 compiles and analyzes readily available groundwater information to characterize California’s groundwater basins, aquifers, and well infrastructure. It also presents data and analysis related to groundwater monitoring efforts, aquifer conditions in response to extraction, groundwater management practices, and conjunctive management programs. It expands and enhances baseline groundwater information on a regional scale, identifies challenges associated with sustainable groundwater management, and helps guide implementation of diverse resource management strategies. The set of data, information, and analysis developed can help local and regional groundwater managers, as well as individual well owners, better understand California’s hidden and commonly misunderstood resource. This Bulletin has been uploaded in the following separate files reflecting hydrologic regions and appendices. Chapter One / Introduction  Chapter Two / State-wide Update  Chapter Three / North Coast Chapter Four / San Francisco Bay Chapter Five / Central Coast Chapter Six / South Coast  Chapter Seven / Sacramento River Chapter Eight / San Joaquin River Chapter Nine / Tulare Lake Chapter Ten / North Lahontan Chapter Eleven / South Lahontan Chapter Twelve / Colorado River Appendix A: Methods and Assumptions Appendix B: CASGEM Basin Prioritization Appendix C: Groundwater Use Data 2010-2015 Appendix D: Conjunctive Management Survey Appendix E: Change in Groundwater in Storage Appendix F: Subsidence

Bulletin 118: California's Groundwater Update 2020 (draft)

California Department of Water Resources (DWR) | March 1st, 2021

Groundwater is a precious and limited resource that is used in meeting the needs of California’s large and small urban areas, rural groundwater users, irrigated agricul

Groundwater is a precious and limited resource that is used in meeting the needs of California’s large and small urban areas, rural groundwater users, irrigated agriculture, and the environment. Since the last California’s Groundwater (CalGW) Update in 2003, there has been significant changes to land use, water use, water application practices, and water allocations. In addition, the effects of climate change have affected California’s reliance on groundwater. It is expected that there will be additional changes in land use, water use, adjustments in water allocations, and that climate change will continue to affect the environment, thus elevating the importance of the reporting in CalGW Updates.  According to the last comprehensive report, California’s Groundwater Update 2003 (CalGW Update 2003), California’s reliance on groundwater was approximately 30 percent during a wet-to-average precipitation water year and approximately 40 percent during dry periods. Since then, the percentage of groundwater reliance has increased to between 30 and 40 percent during above normal to-wet years and to as much as 58 percent during dry periods (California Department of Water Resources 2018).

Bulletin 132-14 Management of the California State Water Project Calendar Year 2013

California Department of Water Resources (DWR) | November 30th, 2015

Bulletin 132-14, Management of the California State Water Project, continues the Bulletin 132 annual series begun in 1963. Bulletin 132-14 reports water supply planning,

Bulletin 132-14, Management of the California State Water Project, continues the Bulletin 132 annual series begun in 1963. Bulletin 132-14 reports water supply planning, construction, financing, management, and operation activities of the State Water Project (SWP). Appendix B contains data and computations used to determine the SWP water contractors’ Statements of Charges for 2015. Appendix B was previously printed and distributed to SWP water contractors to document and support calculation of contractors’ annual charges. The Bulletin discusses significant events and issues that affect SWP management and operations. The Bulletin covers the period from January 1, 2013, through December 31, 2013.

Bulletin 132-20 Appendix B - Data and Computations Used to Determine 2021 Water Charges

California Department of Water Resources (DWR) | September 20th, 2020

This report presents the data and computations used by the State of California in determining the SWP contractors’ Statements of Charges to be paid in calendar year 202

This report presents the data and computations used by the State of California in determining the SWP contractors’ Statements of Charges to be paid in calendar year 2021. The report, Bulletin 132-20, Appendix B, will also be published as part of the Department of Water Resources’ Bulletin 132-20.

Bulletin 132-21 Appendix B - Data and Computations Used to Determine 2022 Water Charges

California Department of Water Resources (DWR) | December 14th, 2021

This report presents the data and computations used by the State of California in determining the SWP contractors’ Statements of Charges to be paid in calendar year 20

This report presents the data and computations used by the State of California in determining the SWP contractors’ Statements of Charges to be paid in calendar year 2022.

Bulletin 16, Report on Weather Modification Operations in California, July 1952-June 1956

California Department of Water Resources (DWR) | January 1st, 1957

Bulletin 17-00, Dams within Jurisdiction of the State of California

California Department of Water Resources (DWR) | July 31st, 2000

Bulletin 17-65, Dams within Jurisdiction of the State of California

California Department of Water Resources (DWR) | August 31st, 1965