Implemented in the map tool
Adapting to Rising Tides: Bay Shoreline Flood Explorer
BCDC / SFEI · released 2019
Visit Adapting to Rising Tides: Bay Shoreline Flood Explorer
Maps shoreline flooding as a “total water level” above mean higher high water, combining sea-level rise with storm surge and king tides using county-reviewed, high-resolution data.
General Information
- Geographic scope within coastal California
- San Francisco Bay Area (9 counties)
- Tool release year and updates
- 2019
Projected Flood Information
- Annual flood risk
- No
- Annual flood risk (various return periods)
- No
- Base flood elevation
- No
- Coastal groundwater flooding
- No
- Erosion projections
- No
- FEMA flood zones
- No
- High tide flooding thresholds (minor/moderate/major)
- No
- King tide
- Yes
- Mapping uncertainty / confidence layers
- No
- Marsh migration space
- No
- Near-100-year storm scenario
- No
- Shoreline erosion
- No
- Storm surge / extreme tide
- Yes
- Stormwater / compound flooding
- No
- Wave run-up
- No
Shoreline Processes
- Coastal flood thresholds
- No
- Coastal groundwater
- No
- Compound flooding with stormwater runoff
- No
- Dynamic hydrodynamic modeling
- No
- Erosion / shoreline change
- No
- Habitat-based risk reduction
- No
- High tide flooding
- No
- Hurricane storm surge
- No
- King tide
- No
- Levee overtopping
- No
- Marsh migration
- No
- Marsh migration / habitat change
- No
- Regulatory base flood elevation
- No
- Riverine and coastal flood zones
- No
- SLR inundation
- Yes
- Shoreline erosion
- No
- Shoreline overtopping
- Yes
- Storm surge / extreme tide
- Yes
- Tide-gauge monitoring
- No
- Wave run-up
- No
Exposure Analysis Provided on Flooding Impacts to Assets
- Critical facilities
- No
- Economic / property value
- No
- Infrastructure & buildings
- Yes
- Natural resources / habitats
- No
- Population / demographics
- No
Data, Reports, and Summary Information Available
- Reports, summary info, or other analyses available for download
- Downloadable GIS flood-extent layers and a county-by-county methodology report.
General Information Regarding Sea Level Rise Model
- Base sea level rise model
- AECOM Bay Area total-water-level dataset, reviewed by county stakeholders.
Strengths and Limitations
- Top 3 strengths
- High-resolution, locally reviewed county data
- “Total water level” framing separates temporary from permanent flooding
- Free, downloadable GIS layers
- Top 3 limitations
- Limited to the nine Bay Area counties
- Uses today's shoreline, so it doesn't model future erosion or levee change
- No built-in population or economic exposure analysis