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Published May 5, 2022 | Version 1.0
Dataset Open

Caravan - A global community dataset for large-sample hydrology

  • 1. Google Research, Vienna, Austria
  • 2. Google Research, Mountain View, CA, United States
  • 3. Geography, College of Life and Environmental Sciences, University of Exeter, Exeter, UK
  • 4. Google, Mountain View, CA, USA
  • 5. Institute for Machine Learning, Johannes Kepler University, Linz, Austria
  • 6. Google Research, Tel Aviv, Israel
  • 7. Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland



Check out the preprint at: (accepted for publication at Nature Scientific Data).

Caravan is an open community dataset of meteorological forcing data, catchment attributes, and discharge daat for catchments around the world. Additionally, Caravan provides code to derive meteorological forcing data and catchment attributes from the same data sources in the cloud, making it easy for anyone to extend Caravan to new catchments. The vision of Caravan is to provide the foundation for a truly global open source community resource that will grow over time.


Channel Log:

  • 23 May 2022: Version 0.2 - Resolved a bug when renaming the LamaH gauge ids from the LamaH ids to the official gauge ids provided as "govnr" in the LamaH dataset attribute files.
  • 24 May 2022: Version 0.3 - Fixed gaps in forcing data in some "camels" (US) basins.
  • 15 June 2022: Version 0.4 - Fixed replacing negative CAMELS US values with NaN (-999 in CAMELS indicates missing observation).
  • 1 December 2022: Version 0.4 - Added 4298 basins in the US, Canada and Mexico (part of HYSETS), now totalling to 6830 basins. Fixed a bug in the computation of catchment attributes that are defined as pour point properties, where sometimes the wrong HydroATLAS polygon was picked. Restructured the attribute files and added some more meta data (station name and country).
  • 16 January 2023: Version 1.0 - Version of the official paper release. No changes in the data but added a static copy of the accompanying code of the paper. For the most up to date version, please check



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Journal article: 10.31223/X50S70 (DOI)