Water Plan Water Balance Data
Department of Water Resources California Water Plan program computes applied, net, and depletion water balances for California. Water balances are simplified water budgets for a water year based on analyses of developed and dedicated water supplies, water uses by sector, water reuses, operational characteristics for an area, and inflows and outflow for a study area that occur above the root zone. Dedicated and developed water supplies include surface water, groundwater, reused and recycled water. Water uses by sector for these analyses include parameters for agriculture, urban, managed wetlands, Wild and Scenic river annual volumes, minimum required instream flows, and minimum required delta outflow, recognizing that water is often used multiple times and benefits multiple sectors. Water balance results show what water was applied to actual uses so that use equals supply. Recent data provided includes water uses and supplies for WYs 2002-2021 at Detailed Analysis Unit by County (DAUCO), Planning Area (PA), Hydrologic Region (HR), and Statewide spatial scales. Computation and aggregation equations for applied, net, and depletion water balances are included in the Standard Operating Procedures (SOPs) for data management and analyses. Zipped data files are in .CSV format. The California Water Plan Update 2023 Water Balances Supporting Document includes water use and supply discussion, graphics, and links to files and folders of water use and supply data for 1998-2020, and related information. The Update 2023 Standard Operating Procedures (SOPs) for Water Balances Automation includes detailed technical information, diagrams, equations, controlled vocabulary, and definitions. California Water Plan Update 2028 is underway and will include data through WY 2024.
Data files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
WY 2019 water balance data by DAUCO, PA, HR, and ST Department of Water Resources California Water Plan program computes applied, net, and depletion water balances for California. Water balances are simplified water budgets for a water year based on analyses of developed and dedicated water supplies, water uses by sector, water reuses, operational characteristics for an area, and inflows and outflow for a study area that occur above the root zone. Dedicated and developed water supplies include surface water, groundwater, reused and recycled water. Water uses by sector for these analyses include parameters for agriculture, urban, managed wetlands, Wild and Scenic river annual volumes, minimum required instream flows, and minimum required delta outflow, recognizing that water is often used multiple times and benefits multiple sectors. Water balance results show what water was applied to actual uses so that use equals supply. Recent data provided includes water uses and supplies for WYs 2002-2021 at Detailed Analysis Unit by County (DAUCO), Planning Area (PA), Hydrologic Region (HR), and Statewide spatial scales. Computation and aggregation equations for applied, net, and depletion water balances are included in the Standard Operating Procedures (SOPs) for data management and analyses. Zipped data files are in .CSV format. The California Water Plan Update 2023 Water Balances Supporting Document includes water use and supply discussion, graphics, and links to files and folders of water use and supply data for 1998-2020, and related information. The Update 2023 Standard Operating Procedures (SOPs) for Water Balances Automation includes detailed technical information, diagrams, equations, controlled vocabulary, and definitions. California Water Plan Update 2028 is underway and will include data through WY 2024. | Download | ZIP | 04/11/25 |
WY 2018 water balance data by DAUCO, PA, HR, and ST Department of Water Resources California Water Plan program computes applied, net, and depletion water balances for California. Water balances are simplified water budgets for a water year based on analyses of developed and dedicated water supplies, water uses by sector, water reuses, operational characteristics for an area, and inflows and outflow for a study area that occur above the root zone. Dedicated and developed water supplies include surface water, groundwater, reused and recycled water. Water uses by sector for these analyses include parameters for agriculture, urban, managed wetlands, Wild and Scenic river annual volumes, minimum required instream flows, and minimum required delta outflow, recognizing that water is often used multiple times and benefits multiple sectors. Water balance results show what water was applied to actual uses so that use equals supply. Recent data provided includes water uses and supplies for WYs 2002-2021 at Detailed Analysis Unit by County (DAUCO), Planning Area (PA), Hydrologic Region (HR), and Statewide spatial scales. Computation and aggregation equations for applied, net, and depletion water balances are included in the Standard Operating Procedures (SOPs) for data management and analyses. Zipped data files are in .CSV format. The California Water Plan Update 2023 Water Balances Supporting Document includes water use and supply discussion, graphics, and links to files and folders of water use and supply data for 1998-2020, and related information. The Update 2023 Standard Operating Procedures (SOPs) for Water Balances Automation includes detailed technical information, diagrams, equations, controlled vocabulary, and definitions. California Water Plan Update 2028 is underway and will include data through WY 2024. | Download | ZIP | 04/11/25 |
WY 2016 water balance data by DAUCO, PA, HR, and ST Department of Water Resources California Water Plan program computes applied, net, and depletion water balances for California. Water balances are simplified water budgets for a water year based on analyses of developed and dedicated water supplies, water uses by sector, water reuses, operational characteristics for an area, and inflows and outflow for a study area that occur above the root zone. Dedicated and developed water supplies include surface water, groundwater, reused and recycled water. Water uses by sector for these analyses include parameters for agriculture, urban, managed wetlands, Wild and Scenic river annual volumes, minimum required instream flows, and minimum required delta outflow, recognizing that water is often used multiple times and benefits multiple sectors. Water balance results show what water was applied to actual uses so that use equals supply. Recent data provided includes water uses and supplies for WYs 2002-2021 at Detailed Analysis Unit by County (DAUCO), Planning Area (PA), Hydrologic Region (HR), and Statewide spatial scales. Computation and aggregation equations for applied, net, and depletion water balances are included in the Standard Operating Procedures (SOPs) for data management and analyses. Zipped data files are in .CSV format. The California Water Plan Update 2023 Water Balances Supporting Document includes water use and supply discussion, graphics, and links to files and folders of water use and supply data for 1998-2020, and related information. The Update 2023 Standard Operating Procedures (SOPs) for Water Balances Automation includes detailed technical information, diagrams, equations, controlled vocabulary, and definitions. California Water Plan Update 2028 is underway and will include data through WY 2024. | Download | ZIP | 04/11/25 |
Supporting files
| Data title and description | Access data | File details | Last updated |
|---|---|---|---|
Update 2023 Water Balances Supporting Document California Water Plan Update 2023 draws from and builds on reference documents related to water resources to enhance the content and produce a better plan with each succeeding update. They provide the methodology, assumptions, data, estimates, and expanded discussion used in the development of this update. California Water Plan Update 2023 (Update 2023) supporting documentation for water balances includes discussion and accountings of water uses and their supplies for the state; a hydrologic overview; water balance tables and graphics for Water Years (WYs) 2016–2020; a geographic overview of California's surface water inflows and outflows with adjoining states, between hydrologic regions, and to the Pacific Ocean; descriptions and links to various data files for WYs 1998-2020; links to related information and SOPs. | PDF | 12/05/24 | |
Update 2023 Standard Operating Procedures for Water Balance Automation Open Water Information Architecture (OWIA) applied to Water Plan Water Balances automation includes categorization into quality control (QC), data publication (DP) and analysis (AN) procedures. Document includes information about governing equations, computer configuration, directory structure, overview of geospatial metadata extraction (GS), quality control (QC), configuration management and change control (CM), application programming interfaces (API) for water balance data, parameterization and controlled vocabulary, as well as, water balance equations, and equations for aggregation adjustments for reuse at different spatial scales. | PDF | 11/20/24 | |
WY 2021 water balance data by DAUCO, PA, HR, and ST Water balance data for WY 2021. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. Zipped data files are in .CSV format. Please, see Update 2023 Standard Operating Procedures for Water Balance Automation for more details. | .ZIP | 04/11/25 | |
WY 2020 water balance data by DAUCO, PA, HR, and ST Water balance data for WY 2020. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. Zipped data files are in .CSV format. | .ZIP | 04/11/25 | |
WY 2017 Water Balance data by DAUCO, PA, HR, and ST Water balance data for WY 2017. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. Zipped data files are in .CSV format. Please, see Update 2023 Standard Operating Procedures for Water Balance Automation for more details. | .ZIP | 04/11/25 | |
WY 2015 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2015. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2014 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2014. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2013 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2013. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2012 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2012. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2011 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2011. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2010 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2010. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2009 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2009. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2008 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2008. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2007 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2007. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2006 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2006. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2005 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2005. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2004 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2004. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2003 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2003. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
WY 2002 Water Balance data by DAUCO, PA, HR, and ST Water balance data for water year 2002. Water balances are simplified water budgets for a water year based on developed and dedicated water supplies applied to actual uses; and inflows and outflows for a study area that occur above the root zone. Study areas for water balances are Detailed Analysis Unit by County (DAUCO) polygons, Planning Areas (PA), and Hydrologic Regions (HR). Spatial data is found in DWR's GIS Atlas. | .ZIP | 04/11/25 | |
Update 2018 Water Balance Standard Operating Procedures (SOPs) Open Water Information Architecture (OWIA) applied to Water Plan Water Balances automation includes categorization into quality control (QC), data publication (DP) and analysis (AN) procedures. Document includes information about governing equations, computer configuration, directory structure, overview of geospatial metadata extraction (GS), quality control (QC), configuration management and change control (CM), application programming interfaces (API) for water balance data, parameterization and controlled vocabulary, as well as, water balance equations, and equations for aggregation adjustments for reuse at different spatial scales. | PDF | 08/11/23 | |
California Water Plan Update 2018 Supporting Document for Water Portfolio Water Balances California Water Plan Update 2018 draws from and builds on reference documents related to water resources to enhance the content and produce a better plan with each succeeding update. They provide the methodology, assumptions, data, estimates, and expanded discussion used in the development of this update. California Water Plan Update 2018 (Update 2018) supporting documentation for water portfolios includes discussion and accountings of water uses and their supplies for the state; a hydrologic overview; water balance tables and graphics for Water Years (WYs) 2011–2015; a geographic overview of California's surface water inflows and outflows with adjoining states, between hydrologic regions, and to the Pacific Ocean; descriptions and links to various data files for WYs 1998-2015; related information and definitions of related terms. | PDF | 08/11/23 | |
California Water Plan Update 2018 Water Balances Fact Sheet - 1 page A one-page fact sheet for the California Water Plan Update 2018 Water Portfolio Water Balances Supporting Document | PDF | 08/11/23 |
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Tags
- agriculture water use
- applied water use
- california
- california department of water resources
- california water plan
- counties
- depletion
- detailed analysis units
- environmental water
- groundwater
- hydrologic regions
- instream flow requirements
- managed wetlands
- planning areas
- standard operating procedures
- state of california
- surface water
- urban water use
- water
- water balance
- water portfolio
- water reuse
- water supply
- water use
- wild and scenic rivers