California Water Plan Update 2010California Water Plan Update 2010

February 28, 2006February 28, 2006

Todd HillaireTodd HillaireCalifornia Department of Water Resources California Department of Water Resources

Northern DistrictNorthern District

Water Portfolio Refinement Water Portfolio Refinement andand

Coordination withCoordination withWEAP and CALSIM StudiesWEAP and CALSIM Studies

OverviewOverview

●●Water Portfolio backgroundWater Portfolio background●●Current Water Portfolio development Current Water Portfolio development

activitiesactivities●●Coordination withCoordination with

●● CALSIM III developmentCALSIM III development●● Water Evaluation and Planning (WEAP) modelWater Evaluation and Planning (WEAP) model

What is the Water Portfolio?What is the Water Portfolio?●● Flow DiagramFlow Diagram

●● Tracks the disposition (e.g. ocean, inland salt sink, atmosphereTracks the disposition (e.g. ocean, inland salt sink, atmosphere, , storage) of all sources of water (e.g. precipitation, regional istorage) of all sources of water (e.g. precipitation, regional imports) mports)

●● Presented by Hydrologic Region and StatewidePresented by Hydrologic Region and Statewide●● Water BalancesWater Balances

●● Applied Water Use, Net Water Use, and DepletionApplied Water Use, Net Water Use, and Depletion●● Data TablesData Tables

●● Contains information that does not conveniently fit into the watContains information that does not conveniently fit into the water er balances or flow diagrambalances or flow diagram●● Time series and other data showing historic trend informationTime series and other data showing historic trend information

●● NarrativesNarratives●● Document hydrologic conditions, year specific events, and water Document hydrologic conditions, year specific events, and water

management decisionsmanagement decisions●● Water QualityWater Quality

●● RWQCB basin plans will be integrated into the water portfolioRWQCB basin plans will be integrated into the water portfolio

Update Update 20052005

●● Water balances Water balances by:by:●● Planning AreaPlanning Area●● Hydrologic Hydrologic

RegionRegion

Water Water BalancesBalances

●● Balance MethodsBalance Methods●● Applied Water UseApplied Water Use●● Net Water UseNet Water Use●● DepletionsDepletions

●● Water Use SectorsWater Use Sectors●● UrbanUrban●● AgricultureAgriculture●● EnvironmentalEnvironmental

●● Managed WetlandsManaged Wetlands●● Wild & Scenic River FlowsWild & Scenic River Flows●● Instream Flow RequirementsInstream Flow Requirements●● Required Delta OutflowRequired Delta Outflow

●● Water SuppliesWater Supplies

Current Water Portfolio ActivitiesCurrent Water Portfolio Activities

●●How is this information useful for my How is this information useful for my regional planning and simulation models?regional planning and simulation models?

●●How is this information being coordinated How is this information being coordinated with other processes?with other processes?

GoalsGoals

●●Continue to improve and promote Continue to improve and promote usefulness of Water Plan data and analysisusefulness of Water Plan data and analysis

●●Outline data needsOutline data needs●● Improve regional inputImprove regional input●●Provide information to run scenarios of land Provide information to run scenarios of land

use changes, efficiency changes, use changes, efficiency changes, operational changes, etc.operational changes, etc.

Update Update 20102010

●● Water balances Water balances by:by:●● Detailed Analysis Detailed Analysis

Unit by CountyUnit by County●● County TotalsCounty Totals●● Watershed Watershed

TotalsTotals●● Regional TotalsRegional Totals

●● Goal Goal –– provide provide useful information useful information for regional for regional planning and planning and coordinationcoordination

Water Use InitiativesWater Use Initiatives●● Agricultural Water UseAgricultural Water Use

●● California Agricultural Water Use ModelCalifornia Agricultural Water Use Model●● ET, EP, ETAWET, EP, ETAW●● Applied Water (Farm Data) Applied Water (Farm Data) -- Consumed Consumed

Fraction, Cultural Practices, Rice Fraction, Cultural Practices, Rice Ponding/StoragePonding/Storage

●● Urban Water Use ModelUrban Water Use Model●● Develop database applicationDevelop database application

●● Managed Wetlands ModelManaged Wetlands Model●● Develop database applicationDevelop database application●● Issues for refinementIssues for refinement

●● FloodFlood--up, Drawdown, Deep Percolation, up, Drawdown, Deep Percolation, Irrigation Requirements, Ponding, Circulation Irrigation Requirements, Ponding, Circulation Flow, Ponding Depths, Storage/ReleaseFlow, Ponding Depths, Storage/Release

In Development

Water Balance ObjectivesWater Balance Objectives●● Focus on Developed Use BalanceFocus on Developed Use Balance

●● Describe developed uses and disposition of suppliesDescribe developed uses and disposition of supplies●● Determine operational characteristics and relational factorsDetermine operational characteristics and relational factors

●● Relationship of supplies and applied water to conveyance seepageRelationship of supplies and applied water to conveyance seepage, , deep percolation, consumptive uses, and outflowdeep percolation, consumptive uses, and outflow

●● Refine applied water / deep percolation / runoff relationshipsRefine applied water / deep percolation / runoff relationships●● Evaluate Consumed Fraction (Irrigation Efficiency) valuesEvaluate Consumed Fraction (Irrigation Efficiency) values●● Quantify and represent the reuse and movement of water Quantify and represent the reuse and movement of water

between and within sectors of usebetween and within sectors of use●● Important for rice and managed wetlandsImportant for rice and managed wetlands

●● Estimate the movement of water between DAU/CountiesEstimate the movement of water between DAU/Counties●● Verify balance outflowVerify balance outflow

Inflow Inflow –– Outflow BalanceOutflow Balance

●● InflowInflow●● Supplies by sector of useSupplies by sector of use

●● OutflowOutflow●● DepletionsDepletions●● Deep percolationDeep percolation●● OutflowOutflow●● Change in surface storageChange in surface storage

●● Rice and managed Rice and managed wetlandswetlands

Supplies by Use

Relational Factors ( )

• On-field losses

• Deep Percolation

• Conveyance

• Outflow

Depletions andDeep Percolation

Relational Factor ExampleRelational Factor Example

●● Conveyance consists of:Conveyance consists of:●● Conveyance Deep PercolationConveyance Deep Percolation●● Conveyance System Evaporation & EvapotranspirationConveyance System Evaporation & Evapotranspiration●● Conveyance SeepageConveyance Seepage●● Conveyance Deep Percolation to Salt SinkConveyance Deep Percolation to Salt Sink●● Conveyance Subsurface Outflow to OR, NV, or MXConveyance Subsurface Outflow to OR, NV, or MX●● Conveyance Return Flows to Develop SupplyConveyance Return Flows to Develop Supply

●● To other DAU/Counties, Planning Areas, Hydrologic RegionsTo other DAU/Counties, Planning Areas, Hydrologic Regions●● Conveyance Return Flows for Delta OutflowConveyance Return Flows for Delta Outflow

●● Conveyance Return Flows to OR, NV, or MXConveyance Return Flows to OR, NV, or MX

Conveyance Deep Percolation (by Sector) =Conveyance Deep Percolation (by Sector) =∑∑ [ Supply x Conveyance Deep Percolation Factor (DPC) ] [ Supply x Conveyance Deep Percolation Factor (DPC) ] (by supply type)(by supply type)

== Local Surface WaterLocal Surface Water x x DPCDPCLSWLSW++ Local ImportLocal Import x x DPCDPCLILI++ Groundwater (Unadjudicated)Groundwater (Unadjudicated) x x DPCDPCGWGW--UU++ Groundwater (Adjudicated)Groundwater (Adjudicated) x x DPCDPCGWGW--AA++ Groundwater (Banked)Groundwater (Banked) x x DPCDPCGWGW--BB++ Colorado RiverColorado River x x DPCDPCCRCR++ State Water ProjectState Water Project x x DPCDPCSWPSWP++ Central Valley Project (Base)Central Valley Project (Base) x x DPCDPCCVPCVP--BB++ Central Valley Project (Project)Central Valley Project (Project) x x DPCDPCCVPCVP--PP++ Other FederalOther Federal x x DPCDPCOFEDOFED++ Ocean DesalinizationOcean Desalinization x x DPCDPCODSLODSL++ Water from RefineriesWater from Refineries x x DPCDPCREFREF++ Water TransfersWater Transfers x x DPCDPCWTWT++ InterInter--Basin Water TransfersBasin Water Transfers x x DPCDPCIntWTIntWT++ Reuse Reuse x x DPCDPCRrRr++ Reuse (Wastewater Recycling)Reuse (Wastewater Recycling) x x DPCDPCRwwRww++ Reuse (Desalinization)Reuse (Desalinization) x x DPCDPCRdRd++ Reuse of Agricultural SupplyReuse of Agricultural Supply x x DPCDPCRaRa++ Reuse of Managed Wetland SupplyReuse of Managed Wetland Supply x x DPCDPCRmwRmw++ Reuse of Urban SupplyReuse of Urban Supply x x DPCDPCRuRu

Example Example CalculationCalculation

Surface Storage by Use within Sectors- Affected by rice and managed wetland ponding

operations- Results in monthly and water year carryover

storage- Affects return flow timing

Outflow and Change in Surface Storage

Components of Balance

Water Plan Water Plan CoordinationCoordination

●● Coordinating Analysis Coordinating Analysis AreasAreas●● Detailed Analysis Units Detailed Analysis Units

(DAUs) for Water Plan(DAUs) for Water Plan●● Water Budget Areas Water Budget Areas

(WBAs) for CalSim(WBAs) for CalSim●● Analysis areas are Analysis areas are

subsets or combinations subsets or combinations one anotherone another

●● These areas are These areas are currently being refinedcurrently being refined

CalSim CoordinationCalSim Coordination

●●Define water budget methodologyDefine water budget methodology●●Develop and refine relational factors for Develop and refine relational factors for

determining water diversion and groundwater determining water diversion and groundwater pumping requirements from land use datapumping requirements from land use data●● Apply Water PlanApply Water Plan’’s relational factors to s relational factors to

determine:determine:●● conveyance lossesconveyance losses●● irrecoverable lossesirrecoverable losses●● deep percolation deep percolation ●● outflowoutflow

CalSim CoordinationCalSim Coordination

●●Provide Consumed Fraction (Irrigation Provide Consumed Fraction (Irrigation Efficiency) data to CalSimEfficiency) data to CalSim

●●Refine representation of rice and managed Refine representation of rice and managed wetlands operationswetlands operations

●● Identify additional data needs for Identify additional data needs for improving the representation of deliveries, improving the representation of deliveries, applied uses, consumptive uses, losses, applied uses, consumptive uses, losses, deep percolation, and outflowdeep percolation, and outflow

WEAP CollaborationWEAP Collaboration●● The Water Evaluation and Planning (WEAP) The Water Evaluation and Planning (WEAP)

model is being used to evaluate Climate Change model is being used to evaluate Climate Change effects on Californiaeffects on California

●● Water Plan information is being used to Water Plan information is being used to evaluate:evaluate:●● System operationsSystem operations●● Diversion requirementsDiversion requirements●● Water demand calculationsWater demand calculations●● Source of supplySource of supply

●● Evaluating WEAPEvaluating WEAP’’s effectiveness for Water Plan s effectiveness for Water Plan analysisanalysis

●●Questions?Questions?

●●Visit the California Water Plan WebsiteVisit the California Water Plan Website

www.waterplan.water.ca.gov