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Sea Level Rise Vulnerability Study for the City of Los Angeles

University of Southern California Sea Grant, Alyssa Newton Mann, Phyllis Grifman, Juliette Hart, Jill Ladwig, and Marika Schulhof
Created: 2/04/2014 - Updated: 8/12/2019

Abstract

The City of Los Angeles (City of L.A. or the City) has initiated research to support planning for the impacts of climate change. The City, the University of Southern California Sea Grant Program (USC Sea Grant) and project partners developed a science-based and stakeholder-supported adaptation planning process to support research on the impacts of sea level rise on City assets, resources and communities.

As a first step, this report, Sea Level Rise Vulnerability Report for the City of Los Angeles, is a summary of initial research on the potential impacts of sea level rise and associated flooding from storms for coastal communities in the City of L.A. The study concentrates on the City’s three coastal regions: Pacific Palisades from Malibu to Santa Monica; Venice and Playa del Rey; and San Pedro, Wilmington and the Port of Los Angeles.

In this study, we provide an initial report by Dr. Reinhard Flick focused on coastal vulnerabilities in locales within City boundaries, and provide recommendations for beach monitoring programs. We then highlight the findings of three vulnerability assessments that provide a preliminary examination of the physical, social, and economic impacts of sea level rise on the City’s coastal assets, resources and communities, and include a summary discussion of ecological vulnerability at Ballona Wetlands. One of the next steps for the City will be to develop an Adaptation Plan. We help get this process started with a matrix of available adaptation measures the City can consider in planning for sea level rise as well as recommendations for moving forward with adaptation planning.

Published On

Tuesday, January 7, 2014

Keywords

Sector Addressed: 
Land Use Planning
Policy
Transportation / Infrastructure
Target Climate Changes and Impacts: 
Air temperature
Culture / communities
Erosion
Flooding
Infrastructure damage
Precipitation
Sea level rise
Storms or extreme weather events
Tourism
Type of Adaptation Action/Strategy: 
Conduct / Gather additional research, data, and products
Sociopolitical Setting: 
Urban

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Sea Level Rise Vulnerability Study for the City of Los Angeles

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Case Study
Summary: 

Over the next century, sea level rise in the Los Angeles region is expected to match global projections with an increase of 0.1 - 0.6 m (5 - 24 inches) from 2000 to 2050 and 0.4 - 1.7 m (17 - 66 inches) from 2000 to 2100. Tides, wave-driven runup, and storm surge sometimes cause coastal flooding in Southern California, especially when big wave storms occur at or near peak high tides.

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