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 Shibatanirshibatani@eipassociates.com916-325-4800Mark Horne mhorne@eipassociates.com310-268-8132

Trends in California Water Management