Following the discovery of a security vulnerability in the Python library py‑hydroweb, version 1.3.3 has just been released.
The hydroweb.next team recommends updating it as soon as possible. Thanks to Jonathan Peri for alerting us.

The Theia Sentinel-2 Surface Water Yearly Synthesis- Level-3B dataset provides a yearly synthesis of rasterized water detection data from Sentinel-2 MultiSpectral Instrument, along with appropriate flags.
This dataset is also available at monthly rate Theia Sentinel-2 Surface Water Monthly Synthesis- Level-3B and at Level-2 in the Theia Sentinel-2 Surface Water - Level-2B datasets respectively.
The dataset was generated using the SurfWater Processing Chain.
The Theia Sentinel-2 Surface Water Yearly Synthesis- Level-3B dataset is organized into the original Sentinel-2 UTM Tiling Grid provided by Copernicus. Each of these tiles nominally contains data over 100 km x 100 km.
The dataset can be cited using the following DOI: https://doi.org/10.24400/329360/SW_L3_S2_YEARLY
Please also use the following reference publication:
Peña-Luque, S.; Ferrant, S.; Cordeiro, M.C.R.; Ledauphin, T.; Maxant, J.; Martinez, J.-M. Sentinel-1&2 Multitemporal Water Surface Detection Accuracies, Evaluated at Regional and Reservoirs Level. Remote Sens. 2021, 13, 3279. https://doi.org/10.3390/rs13163279
1 year or less
10 meters
Raster
GeoTIFF
Satellite
SW_L3_S2_YEARLY
1.4
ETALAB 2.0