Observations
- Alaska Water Level Gauges and Tide Predictions
- NOAA NWLON Water Level Gauges
- Alaska DGGS Storm Photo Database
- GPS Reflectometry (coming soon)
- Community-Based Observations
- Rapid Deploy Sensors
Education
- Minute Physics: What is Sea Level? video
- About Tidal Datums
- Introduction to Geodetic and Tidal Vertical Datums
- Tide Datums and their Applications
- Fantastic Tidal Datums
Tools
- Convert Between Tidal and Geodetic Datums for Alaska
- Convert Between Geodetic Datums
- Southeast Alaska VDatum
- Compute Tidal Datums from Water Level Time Series, JOA
- Access Tidal Benchmark Sheets(select advanced and historic data)
- NGS Tidal Elevation Page
Flood and Risk Mapping
- Introduction to FEMA Coastal Floodplain Mapping
- Alaska Coastal Hazards Program
- Flood Histories and Coastal Flood Categories (coming soon)
- Color-Indexed Maps