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CALAFCO ConferenceMonterey, CASeptember 9, 2005Robert Shibatani & Mark HorneEIP AssociatesTrends in California Water Management
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Water TrendsSupply OverviewWater TrendsLAFCo Implications
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Water Supply Overview
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Californias Water SupplyAbout 190 million acre-feet of rain and snow/ yearAbout 75% falls north of SacramentoAbout 75% of demand is south of SacramentoAbout 75% falls between November and MarchAbout 75% of demand is between April and OctoberDepend on Cold Storage in the form of snow packAbout 60% soaks into ground, evaporates, or is used by native vegetationOf remaining 40%36% flows to ocean28% committed to environment28% used by agriculture7% used by cities and industry
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Californias Water System
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Hydrology Overview:Watering Entering the State
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Hydrology Overview:Watering Leaving the State
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Hydrology Overview:Storage Changes
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Storage/Allocation ProblemCannot capture/retain Annual InflowsExcess Unimpaired InflowUndersized ReservoirsFlood Control Mandate of CVP/SWPNew On-Stream Reservoirs - Difficult
Cannot deliver to use areasDistant source reservoirsUndersized/non-existent Conveyance
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What are the Short-Term Supply Solutions? TransfersAssignmentsIntra- and Inter-RegionalGroundwater Banking/Conjunctive UseDemand ReductionWater Conservation - OffsetRecycled Water - Offset
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What are the Delivery Constraints?Infrastructure LimitationsAged/Inefficient FacilitiesCost to Build New FacilitiesTime to Build/Approve New Facilities
Regulatory ControlsDelta Water Quality X2ESA Biological Opinions Minimum FlowsCVP Dedicated Yield
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Water TrendsTraditional Water PlanningWater SupplyStorage and DeliveryGroundwaterWater QualityDocumentationNew Water Planning
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Traditional Water PlanningSingle AgencySingle (or Few) SourcesSafe Drinking Water ActWater Quality Analysis12 parameters
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Recent Trends: SupplyMultiple SourcesLocal SuppliesSurface & GroundwaterImported WaterWater Transfers
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Recent Trends: SupplyNon-Traditional SourcesRecycled WaterStorm Water ConservationColored WaterDesalination
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Recent Trends: Storage & DeliveryLimited Surface Storage OptionsIncrease in Conjunctive UseAging Infrastructure
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Recent Trends: Storage & DeliveryVariations in SupplyClimate VariabilityInterruptible WaterSWP Reliability ReportEnvironmental Concerns
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Recent Trends: GroundwaterBasins in Overdraft Conjunctive UseExpansion of Artificial RechargeAquifer Storage & Recovery (ASR)
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Recent Trends: GroundwaterQuality ConcernsContaminants from Prior Land UsesDisinfection By-Products (THMs)
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Recent Trends:Water Quality Drinking Water Regulation Tanner Bill, Prop. 65, CA Toxics Rule, etc. MCLs, DLRs, UCRMs, etc.
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Recent Trends:Water Quality Surface Water Regulation NPDESPoint & Non-Point Sources TMDLsWatershed-based Implementation Strategies
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Recent Trends:Water Quality
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Recent Trends:Water Quality
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Recent Trends:Water Quality Emerging ContaminantsPharmaceuticals & Personal Care ProductsEndocrine-Disrupting Compounds
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Recent Trends:Documentation Source Water AssessmentWellhead Protection Program
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Recent Trends:Documentation Source Water AssessmentWellhead Protection ProgramGroundwater Management Plan (AB 3030)Urban/Agricultural Water Management Plans
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Recent Trends:Documentation Source Water AssessmentWellhead Protection ProgramGroundwater Management Plan (AB 3030)Urban/Agricultural Water Management PlansInformation Exchange for General PlansWater Supply Assessment (SB 610)Water Supply Verification (SB 221)
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SB 610:Water Supply Assessment500 Residential Dwelling Units500 Hotel/Motel Rooms500,000 sq. ft. Retail (or 1,000 employees)250,000 sq. ft. Commercial (or 1,000 employees)650,000 sq. ft. Industrial (or 40 acres or 1,000 employees)
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SB 221:Water Supply VerificationSubdivision for 500 units
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SB 610 & 221:Is the Supply Adequate?Average Water YearSingle Dry Water YearMultiple Dry Water Years
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SB 610 & 221:Information Sources?Local Water AgenciesUrban Water Management PlansWater Agencies with 3,000 connectionsWhat to do in Developing Areas?
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Water Trends:Other Issues Habitat, Species & Open Space ProtectionLand Conservation
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Water Trends:Other Issues Local Watershed Plans
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Water Trends:Other Issues General PlansOptional Water ElementAnother Link Between Land Use & Water?
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Water Trends:Other Issues Optional Water ElementWater Supply Water Quality Wastewater Treatment Storm Water Management Flood Management
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Water Trends:Other Issues Storm Water Liability?Paterno v. State of California
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Water Trends:The New Water Planning Integrated Regional Water Management (Proposition 50, Chapter 8)
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New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use Efficiency
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New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use EfficiencyGroundwater Recharge & Management Projects
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New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use EfficiencyGroundwater Recharge & Management ProjectsDemonstration Projects for Drinking Water Treatment & Distribution Methods
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New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use EfficiencyGroundwater Recharge & Management ProjectsDemonstration Projects for Drinking Water Treatment & Distribution MethodsWater Banking, Water Exchange, Water Reclamation, & Improvement of Water Quality
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New Water PlanningIRMW Plans may include:Storm Water Capture, Storage, Treatment, & ManagementPlanning & Implementation of Multi-Purpose Flood Control Programs
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New Water PlanningIRMW Plans may include:NPS Pollution Reduction, Management & MonitoringContaminant & Salt Removal
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New Water PlanningIRMW Plans may include: Removal of Invasive Non-Native Plants Creation and Enhancement of Wetlands Acquisition, Protection, & Restoration of Open Space & Watershed LandsWatershed Management Planning & Implementation
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New Water PlanningIRWM Plan ContentsRegional Agency or GroupWater Management StrategiesHow Integration Improves ReliabilityRegional PrioritiesImplementation StrategiesRelation to Local Planning
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New Water PlanningIRWM IssuesShort Timeline to Prepare a DraftSelf-Defined Region (Overlap & Gaps)Is There Life After Prop. 50?
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LAFCO MandatesGovernment Code 56430 Infrastructure DeficienciesGrowth & Population Projections Financing Constraints & OpportunitiesCost Avoidance Rate RestructuringShared FacilitiesGovernment Structure Management EfficienciesLocal Accountability & Governance
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Contemporary Examples from Water Agency PerspectiveWater Supply & InfrastructureA B C D Daisy Chain ModelFirm Yield Multiple Dry Years?Groundwater Banking - AccountingFolsom Re-Operation Growth MoratoriumSacramento Water ForumEngineering/Hydraulics
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Keys to Integrated Regional Water Management PlanningLAFCO ConsiderationsRecognize Water Management TrendsRecognize Spatiality 3 DimensionsRecognize Potential of MSRs Key Tool
Questions?What is an Appropriate Region?Who should assume the Lead Role?Can Regional Plans provide Local Info?
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Questions?
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Robert [email protected] Horne [email protected]
Trends in California Water Management