mwd water supply and drought management presentation

Water Planning and Stewardship CommitteeItem 6aMarch 9, 2020

WP&S Committee Item 6a Slide 2 March 9, 2020

Colorado River Basin

WY

CO

NMAZ

NVUT

Mexico

Lake Oroville

Lake Powell

MWD

Lake Mead

Upper Colorado

River Basin

Northern Sierra

CRA1.0 MAF

SWP287 TAF

Supply: 1.29 MAF

WP&S Committee Item 6a Slide 3 March 9, 2020

Colorado River Basin

WY

CO

NMAZ

NVUT

Mexico

Supply: 1.29 MAFDemand: 1.65 MAF

1.65 MAF

WP&S Committee Item 6a Slide 4 March 9, 2020

Colorado River Basin

WY

CO

NMAZ

NVUT

Mexico

Supply:

Demand:

Balance:

1.29 MAF1.65 MAF

-361 TAF

WP&S Committee Item 6a Slide 5 March 9, 2020

Colorado River Basin

WY

CO

NMAZ

NVUT

Supply:

Demand:

Balance:

Dry-Year Storage: 3.1 MAF

1.29 MAF1.65 MAF

-361 TAF

Storage Take Capacity: 1.4 MAF

WP&S Committee Item 6a Slide 6 March 9, 2020

Colorado River Basin

WY

CO

NM

AZ

NVUT

Supply: 1.29 MAFDemand: 1.65 MAF

Balance: -361 TAF

Groundwater

CarryoverCarryover

Flex

In-Region Surface

Mead ICS

994

DWCV

296

CUP

Storage Take Capacity: 1.4 MAF

* Includes EmergencyStorage

Dry-Year Storage: 3.1 MAF

986

58

219

643 297

*Not drawn to scale

WP&S Committee Item 6a Slide 7 March 9, 2020

Colorado River Basin

WY

CO

NMAZ

NVUT

Upper Colorado

River Basin

Northern Sierra

Supply:

Demand:

Balance:

1.29 MAF1.65 MAF

-361 TAF

65%DWR RunoffForecast

79%Colorado Basin River Forecast Center RunoffForecastPercent of Normal

Precipitation since October 1, 2019

Dry-Year Storage: 3.1 MAF

Storage Take Capacity: 1.4 MAF

WP&S Committee Item 6a Slide 8 March 9, 2020

SWP allocation likely to remain low given persistent dry conditions

Well positioned to manage through a dry 2020 and potential consecutive dry years