PSMSL: Permanent Service for Mean Sea Level
Global data bank of monthly and annual mean sea-level values from ~2,000 tide-gauge stations worldwide (RLR and Metric), freely downloadable, hosted at the UK National Oceanography Centre.
psmsl.org
At a glance
- Region
- UK (Global)
- Coverage
- Global
- Access
- Free
- Category
- Research Institute
- Last updated
- 2026
What's inside
- sea level
- tide gauge
- mean sea level
What you can do with it
Typical work that data of this type supports.
- 01
Sea-level planning
Plan for sea-level rise and storm surge.
Because it has: sea level
- 02
Saline intrusion
Track salt moving into rivers and aquifers.
- 03
Design flows
Estimate 1-in-50 and 1-in-100 year floods for bridges, culverts and spillways.
Because it has: tide gauge
Where AI adds value
Ideas for machine learning and AI agents built on this kind of data.
- 01
Surge forecasts
Forecast surge and coastal water levels quickly.
- 02
Shoreline change
Detect erosion and accretion from imagery.
- 03
Flow forecasting
Train LSTM-style models on past records to forecast river levels and flow days ahead.
Related water data
- SONEL: Système d'Observation du Niveau des Eaux LittoralesGlobal | Free
- UHSLC ERDDAP (University of Hawaii Sea Level Center)Global | Free
- Copernicus Marine ServiceGlobal | Free
- ESA CCI Open Data PortalGlobal | Free
- NASA PO.DAAC (Physical Oceanography DAAC)Global | Free
- Copernicus Lake Water Quality NRT v2 (100m)Global | Free
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