2070 Extreme Climate Change Scenarios for Water Supply Planning

DWR’s 2070 extreme climate change scenarios enable exploration of the vulnerability of and opportunities for water supply at the potential bounds of future climate change conditions. These scenarios were originally developed as part of the public benefit uncertainty analysis for the California Water Commission’s Water Storage Investment Program (WSIP) (dataset available here: https://data.cnra.ca.gov/dataset/climate-change-projections-wsip-2030-2070).

In 2018, DWR’s Sustainable Groundwater Management Program (SGMP) furnished these extreme scenarios for use by Groundwater Sustainability Agencies (GSAs) (dataset available here: https://data.cnra.ca.gov/dataset/sgma-climate-change-resources). Specifically, downscaled global climate model (GCM) projections were provided for two future climate periods, including a 2030 central tendency, a 2070 central tendency, and two 2070 extreme scenarios to establish a range of projected conditions. Since then, DWR collaborated with Lawrence Berkeley National Laboratory to improve the fidelity of these long-range planning datasets, resulting in this update of the 2070 extreme scenarios.

The 2070 extreme scenario update utilizes an improved climate period analysis method to better capture the GCM-projected change in temperature and precipitation. The updated dataset improves downscaled climate change extreme conditions considered for water supply that features both statewide coverage of hydrologic variables and managed flows within California’s inter-regional water conveyance system.

A technical note on the background and results of this process is provided here: https://data.cnra.ca.gov/dataset/extreme-climate-change-scenarios-for-water-supply-planning/resource/f2e1c61a-4946-4863-825f-e6d516b433ed.

Organization

California Department of Water Resources

DWR manages California's water resources, systems, and infrastructure, including the State Water Project (SWP), in a responsible, sustainable way.

Update to the 2070 Extreme Climate Change...PDF Popular
This document describes the background and nature of updates made to the 2070...
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2070 DEW - Climate and VIC Results - DailyZIP Popular
Year 2070 future condition with projected climate and sea level conditions...
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2070 WMW - Climate and VIC Results - DailyZIP
Year 2070 future condition with projected climate and sea level conditions...
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2070 DEW - CalSim-II Model SimulationsZIP
CalSim‐II model simulations of storage, flows, and diversions for the major...
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2070 WMW - CalSim-II Model SimulationsZIP
CalSim‐II model simulations of storage, flows, and diversions for the major...
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Additional Info

Field	Value
Publisher	California Department of Water Resources
Homepage URL	https://water.ca.gov/Programs/All-Programs/Climate-Change-Program
Contact Name	Wyatt Arnold
Contact Email	[email protected]
Frequency	Irregular
Public Access Level	Public
Spatial Coverage
Bounding Coordinate	North Bounding Coordinate: 42.67385 East Bounding Coordinate: -115.09277 South Bounding Coordinate: 32.24010 West Bounding Coordinate: -124.40918
Point of Contact	Contact Organization: California Department of Water Resources Voice Telephone: Email:
Last Updated	October 12, 2020, 18:12 (UTC)

2070 Extreme Climate Change Scenarios for Water Supply Planning

Data and Resources

Additional Info