External tool only
Coastal Resilience Mapping Portal
The Nature Conservancy · released 2009, expanded over time
Visit Coastal Resilience Mapping Portal
A mapping platform focused on where nature-based solutions — reefs, marshes, dunes — can reduce flood risk, alongside standard SLR and storm-surge hazard layers.
General Information
- Geographic scope within coastal California
- United States, including California
- Tool release year and updates
- 2009, expanded over time
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
- No
- 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
- Yes
- 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
- No
- 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
- Yes
- Population / demographics
- No
Data, Reports, and Summary Information Available
- Reports, summary info, or other analyses available for download
- Interactive maps and case-study reports; some downloadable data by region.
General Information Regarding Sea Level Rise Model
- Base sea level rise model
- Varies by region and partner project; blends local and national data sources.
Strengths and Limitations
- Top 3 strengths
- Strong focus on nature-based adaptation options, not just hazard mapping
- Long track record with many regional partner projects
- Pairs habitat data directly with flood hazard layers
- Top 3 limitations
- Coverage and data depth vary a lot by region depending on local partners
- Less standardized methodology than a single-model tool
- Can lag in areas without an active regional project