Sea Level Rise & Flooding
Climate Action and Resiliency Plan
Introduction
Flood Explorer
Explore this map to see the extent of flooding in Alameda at different high tide level. The box in the upper right hand corner of the map shows how the same level of flooding can be caused by smaller levels of sea level rise in combination with larger storms, and vice versa.
This map shows what would happen if we don’t make investments to adapt our shoreline and protect our homes and critical infrastructure. We can shrink the areas of blue on the map if we proactively prepare for sea level rise.
100-year Floodplain
This map shows the FEMA 100-year floodplain. To make the floodplain visible, click the Layers tab and check the “FEMA100yr62018” box under the Environmental heading.
This map shows the vulnerable parts of our shoreline and what is being done to protect them.
The blue areas show flooding that would occur at a high tide three feet higher than today’s high tide if we did not protect our shoreline. The pink areas have protections that are planned and funded.
The areas in black boxes are low parts of the shoreline that we haven’t yet developed plans to protect. A central task of the Climate Action and Resiliency Plan (CARP) was to identify potential strategies for adapting these parts of the shoreline to future flooding.
Priority flooding slideshow
This shows a close-up view of the 10 areas identified in the map above.
For more information, view Appendix G of the CARP.
The Cost of Inaction and Action
With conservative assumptions and incomplete calculation of benefits, in all scenarios, for every dollar spent on adapting, at least $3.50 in loss is avoided.