The Global WaterPack (GWP) is a temporally consistent and spatially detailed dataset that maps the open surface water worldwide between 70°S and 70°N at 250 m spatial resolution.

The annual layers contain information on how often a pixel was detected as open surface water with pixel values between 0 and 365 (366 for leap years). 

The dataset is provided in the format of Cloud Optimized GeoTIFF (COG) files for entire Earth at geographical lat/lon (WGS84).

The GWP annual layer is licensed under CC-BY-4.0.

For more technical details and accuracy figures please refer to: 
Klein, I., et al. (submitted): Global WaterPack – The development and state of global surface water over the past 20 years at daily temporal resolution.
Klein, I., Gessner, U., Dietz, A., Kuenzer, C. (2017): Global WaterPack–A 250 m resolution dataset revealing the daily dynamics of global inland water bodies. Remote sensing of environment 198, 345-362

For further information please contact: waterpack@dlr.de