Version 2 of the Australian edition of the Catchment Attributes and Meteorology for Large-sample Studies (CAMELS) series of datasets. Since publication in 2021, CAMELS-AUS (Australia) has served as a resource for the study of hydrological change, arid-zone hydrology, and hydrological model improvement. In this update, the dataset has been significantly enhanced both temporally and spatially. The new dataset comprises information for over twice as many catchments (561 compared to 222). The streamflow and climatic information are updated a further eight years (2022 compared to 2014). Lastly, the attribute information is improved, particularly with respect to hydrological statistics (signatures) and uncertainty in streamflow. Together, these updates make CAMELS-AUS Version 2 a more comprehensive and current resource for hydrological research and applications. 

This version has been produced partly in response to journal review comments for Earth Systems Science Data (ESSD). These comments are publicly available, at https://essd.copernicus.org/preprints/essd-2024-263/. New for this version, relative to v2.02: Extra information and analysis comparing the two gridded precipitation datasets (AGCD and SILO); Updates to streamflow quality codes (incorrectly formatted in previous version); Additional readme file providing more context and explanation of streamflow data; and Version comparison file showing what has changed for CAMELS-AUS v2 relative to v1;