SANTA ANA RIVER CONSERVATION AND CONJUNCTIVE USE PROGRAM (SARCCUP)

One Water One Watershed Conference 2017

2

SARCCUP COLLABORATION

Droughts lead to Innovation

Habitat Improvement: Arundo Removal & Santa Ana Sucker fish habitat restoration Water Use Efficiency: Conservation-Based Rates

Support, Water-use Efficient Landscaping Design Groundwater Banking: “Put and Take”

Conjunctive Use Facilities

SARCCUP Elements

5

Cost Sharing

$46.7

$0.0

$10.0

$20.0

$30.0

$40.0

$50.0

$60.0

Grant Local Match

WMWD

SBVMWD

OCWD

IEUA

EMWD

Master Plan

Arundo

Habitat

Administration

Water Bank

WUE

$55M Proposition 84 Grant

$45M Local Match

Total SARCCUP Project Cost = $100 million

SARCCUP Benefits

∗ Habitat Creation & Arundo Removal

(conserved water supply)

∗ Water Use Efficiency - Turf Removal & Conservation-Based Rates (conserved water supply)

∗ Groundwater Bank (New Dry-Year Yield)

Total New Water Supply

New Water Supply

2,000 AFY

7,500 AFY

60,000 AFY

69,500 AFY

Groundwater Bank Goals

∗ Lower overall water cost ∗ Optimize Imported water

supplies ∗ Cheaper than the “spot market”

∗ Provide dry year yield during drought periods ∗ Proactive approach ∗ Reduce the impact of drought

SARCCUP

Imported (MWDSC/SBVMWD)

Local Supplies

SARCCUP Groundwater Banks

SBBA GW Basin

San Jacinto GW Basin

Chino Basin

Elsinore BW Basin

Orange County

CHINO GROUNDWATER BASIN

BASELINE FEEDER EXTENSION (IEUA-SBVMWD)

IEUA RW

DEVIL CANYON - AZUSA PIPELINE (SGVMWD)

PRADO OBLIGATION

PUT

(IN LI

EU G

WR)

RIALTO FEEDER (MWD)

CHINO DESALTER

WMWD

SBVMWD

EXCHANGE (IW FOR CDA)

TAKE (WET EXCHANGE)

TAKE

(WET

EXC

HAN

GE)

ELSINORE GROUNDWATER

BASIN

SAN JACINTO GROUNDWATER BASIN

SAN BERNARDINO GROUNDWATER BASIN

EMWD

STATE WATER

PROJECT

PUT-TAKE (ASR WELLS)

GWR PUT

TAKE (WELLS)

TAKE (IN-LIEU EXCHANGE) TAKE

(IW/RW EXCHANGE)

PUT (GWR)

PUT (GWR)

WET YEAR WATER DELIVERY

MWD PIPELINES

PUT TO EMWD OR WMWD

PUT (GWR)

TAKE (WELLS) IEUA

IEUA Member Agencies

OCWD

PUT (WET) OR EXCHANGE (IN-LIEU)

TAKE (WELLS)

PUT

(WET

) OR

EXCH

ANG

E (P

APER

)

MWD CRA

SARCCUP Master Plan

Build Decision Support Model

Optimize Grant

Facilities

Identify Phase 2 Facilities

Optimize Phase 2 Facilities

Master Plan

Santa Ana River Conservation and Conjunctive Use Program Optimization Using a Decision-Support Model Project

Maximum Capacity (180 TAF)

Maximum Capacity (180 TAF)

Storage Benefits Baseline Scenario

Baseline + California Water Fix

OCWD WMWD SBVMWD EMWD IEUA

Key Findings

1. Climate change has little impact on SARCCUP deliveries

2. CA Water Fix reduces ultimate size of SARCCUP bank

3. Optimum bank capacity appears to be around 300,000 AF

4. SWP conveyance capacity could be main constraint

1. Developing environmental documents 2. SAWPA/Agency grant contracts 3. Additional decision-support modelling ∗ Further Facility Refinement

Current Tasks