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CALAFCO ConferenceMonterey, CASeptember 9, 2005Robert Shibatani & Mark HorneEIP AssociatesTrends in California Water Management
Water TrendsSupply OverviewWater TrendsLAFCo Implications
Water Supply Overview
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
Californias Water System
Hydrology Overview:Watering Entering the State
Hydrology Overview:Watering Leaving the State
Hydrology Overview:Storage Changes
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
What are the Short-Term Supply Solutions? TransfersAssignmentsIntra- and Inter-RegionalGroundwater Banking/Conjunctive UseDemand ReductionWater Conservation - OffsetRecycled Water - Offset
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
Water TrendsTraditional Water PlanningWater SupplyStorage and DeliveryGroundwaterWater QualityDocumentationNew Water Planning
Traditional Water PlanningSingle AgencySingle (or Few) SourcesSafe Drinking Water ActWater Quality Analysis12 parameters
Recent Trends: SupplyMultiple SourcesLocal SuppliesSurface & GroundwaterImported WaterWater Transfers
Recent Trends: SupplyNon-Traditional SourcesRecycled WaterStorm Water ConservationColored WaterDesalination
Recent Trends: Storage & DeliveryLimited Surface Storage OptionsIncrease in Conjunctive UseAging Infrastructure
Recent Trends: Storage & DeliveryVariations in SupplyClimate VariabilityInterruptible WaterSWP Reliability ReportEnvironmental Concerns
Recent Trends: GroundwaterBasins in Overdraft Conjunctive UseExpansion of Artificial RechargeAquifer Storage & Recovery (ASR)
Recent Trends: GroundwaterQuality ConcernsContaminants from Prior Land UsesDisinfection By-Products (THMs)
Recent Trends:Water Quality Drinking Water Regulation Tanner Bill, Prop. 65, CA Toxics Rule, etc. MCLs, DLRs, UCRMs, etc.
Recent Trends:Water Quality Surface Water Regulation NPDESPoint & Non-Point Sources TMDLsWatershed-based Implementation Strategies
Recent Trends:Water Quality
Recent Trends:Water Quality
Recent Trends:Water Quality Emerging ContaminantsPharmaceuticals & Personal Care ProductsEndocrine-Disrupting Compounds
Recent Trends:Documentation Source Water AssessmentWellhead Protection Program
Recent Trends:Documentation Source Water AssessmentWellhead Protection ProgramGroundwater Management Plan (AB 3030)Urban/Agricultural Water Management Plans
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)
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)
SB 221:Water Supply VerificationSubdivision for 500 units
SB 610 & 221:Is the Supply Adequate?Average Water YearSingle Dry Water YearMultiple Dry Water Years
SB 610 & 221:Information Sources?Local Water AgenciesUrban Water Management PlansWater Agencies with 3,000 connectionsWhat to do in Developing Areas?
Water Trends:Other Issues Habitat, Species & Open Space ProtectionLand Conservation
Water Trends:Other Issues Local Watershed Plans
Water Trends:Other Issues General PlansOptional Water ElementAnother Link Between Land Use & Water?
Water Trends:Other Issues Optional Water ElementWater Supply Water Quality Wastewater Treatment Storm Water Management Flood Management
Water Trends:Other Issues Storm Water Liability?Paterno v. State of California
Water Trends:The New Water Planning Integrated Regional Water Management (Proposition 50, Chapter 8)
New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use Efficiency
New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use EfficiencyGroundwater Recharge & Management Projects
New Water PlanningIRMW Plans may include: Water Supply Reliability, Water Conservation, & Water Use EfficiencyGroundwater Recharge & Management ProjectsDemonstration Projects for Drinking Water Treatment & Distribution Methods
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
New Water PlanningIRMW Plans may include:Storm Water Capture, Storage, Treatment, & ManagementPlanning & Implementation of Multi-Purpose Flood Control Programs
New Water PlanningIRMW Plans may include:NPS Pollution Reduction, Management & MonitoringContaminant & Salt Removal
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
New Water PlanningIRWM Plan ContentsRegional Agency or GroupWater Management StrategiesHow Integration Improves ReliabilityRegional PrioritiesImplementation StrategiesRelation to Local Planning
New Water PlanningIRWM IssuesShort Timeline to Prepare a DraftSelf-Defined Region (Overlap & Gaps)Is There Life After Prop. 50?
LAFCO MandatesGovernment Code 56430 Infrastructure DeficienciesGrowth & Population Projections Financing Constraints & OpportunitiesCost Avoidance Rate RestructuringShared FacilitiesGovernment Structure Management EfficienciesLocal Accountability & Governance
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
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?
Questions?
Robert [email protected] Horne [email protected]
Trends in California Water Management