From the California Water Plan Glossary:

water portfolio — A picture of the water supply and use for a given year statewide or by region, subject to availability of data; it includes a flow diagram, a flow diagram table, water balances, and a summary table. 

The following Dedicated Water Supplies categories were included in this dataset (along with their definition from the glossary):

Local Deliveries:   For the California Water Plan water portfolios, this represents the amount of water delivered by local water agencies and individuals. It includes direct deliveries of water from streamflows, as well as local water-storage facilities. It also includes water supply for instream and Wild and Scenic river flows —a change from California Water Plan Update 2005, wherein there was a separate category for dedicated environmental water.

Local imports — For the California Water Plan water portfolios, this represents the amount of water transferred by local agencies from other regions of the state.

Colorado River deliveries — (1) For the California Water Plan water portfolios, this represents the volume of water diverted from the Colorado River by Metropolitan Water District of Southern California, Imperial Irrigation District, Coachella Valley Water District, the Yuma Project, and others under California’s entitlement to use Colorado River water. (2) For the California Water Plan  futurescenarios, this represents California’s right to import water from the Colorado River. California’s allocation is 4.4 million acre-feet per year plus 50 percent of any declared surplus. 

CVP Base and Project Deliveries:  


Central Valley Project – base deliveries — For the California Water Plan water portfolios, this represents the delivery of prior rights water to Central Valley Project contractors. 


Central Valley Project – project deliveries —For the California Water Plan water portfolios, this represents the delivery of project water to Central Valley Project contractors.  


Central Valley Project – The CVP supplies water to more than 250 long-term water contractors extending from Shasta County in the north to Kern County in the south. The majority of the CVP water goes to agricultural uses. Collectively, the contracts call for a maximum annual delivery of9.3 million acre-feet; 4.8 million acre-feet is classified as project water; and 4.5 million acre-feet is classified as water right settlement water. Contractors that receive project water repay project capital and operation and maintenance costs. Water right settlement water is water covered in agreements with water rights holders whose diversions existed before the project was constructed. Project operations altered natural river flow upon which these pre-project diverters had relied, so contracts were negotiated to agree on the quantities of diversions that could be made without any payment to the United States. Water rights settlement contractors on the upper Sacramento River receive their supply from natural flow and storage regulated at Shasta Dam. Settlement contractors on the San Joaquin River (called exchange contractors) receive Delta water diverted from the Delta and stored in San Luis Reservoir and/or pumped directly via the Delta-Mendota Canal.

other federal deliveries — For the California Water Plan water portfolios, this represents the sum of deliveries from federal projects other than the Central Valley Project.

State Water Project (SWP) deliveries — (1) For the California Water Plan future scenarios, this represents the volume of water imported to a given study area from the State Water Project. (2) For the California Water Plan water portfolios, this represents the sum of all deliveries to State Water Project contractors. 

State Water Project (SWP):  The Department of Water Resources (DWR) has long-term water supply contracts for water service from the State Water Project (SWP) with 29 local agencies from Plumas County Flood Control and Water Conservation District in the north to the Metropolitan Water District of Southern California in the south. In return for State financing, constructing, operating, and maintaining facilities needed to provide water service, the agencies contractually agreed to repay all associated SWP capital and operating costs. The Annual Table A represents the total amount of project water that a SWP contractor may request each year, according to that contractor’s long-term water supply contract. Depending on hydrologic conditions, the actual delivery may be different than the requested amount. The majority of the SWP goes to urban uses. As a result of amendments to contracts in the 1990s, the current combined maximum annual Table A amount totals 4,17 2,786 acre-feet for all 29 contractors. The contracts are in effect for the longest of the following periods: (1) the project repayment period, which extends to the year 2035; (2) 75 years from the date of the contract; or (3) the period ending with the latest maturity date of any bond used to finance the construction costs of project facilities.  

Water from refineries — For the California Water Plan water portfolios, this represents the amount of water produced as a byproduct of the oil or gas refining process. 

Groundwater Net Extraction:  

groundwater extractions – adjudicated — For the California Water Plan water portfolios, this represents the amount of water withdrawn from basins that have been adjudicated from the beginning of the water year to the end of the water year. 

groundwater extractions – banked — For the California Water Plan water portfolios, this represents the amount of water withdrawn from formal interagency banking programs from the beginning of the water year to the end of the water year. 

groundwater extractions – unadjudicated — For the California Water Plan water portfolios, this represents the amount of water withdrawn from basins that are not adjudicated or part of a contract banking program from the beginning of the water year to the end of the water year. 

Deep Percolation of Surface and Groundwater:  Percolation of water through the ground and beyond the lower limit of the root zone of plants into groundwater. Efficient agricultural and urban irrigation practices limit or eliminate deep percolation. For the California Water Plan water portfolios, this represents the movement of applied water to a usable groundwater aquifer. 

Return flows from carryover storage