biostudies-literatureUnknown12(1)Lv MSpecific yield (S_y) stands as a critical parameter and a significant source of error in groundwater simulations. However, there is still a lack of reliable global S_y datasets. Based on the trilinear graph of S_y and soil textures, we develop a comprehensive global dataset of gridded average specific yield (GASY) aimed for various soil textures, which are obtained from the Global Soil Dataset for Earth System Models, the SoilGrids product, and the Harmonized World Soil Database. Validations with existing S_y values estimated by laboratory and field methods across different S_y concepts, at the aquifer-scale to global-scale, compellingly revealed that the GASY effectively represents reliable average S_y for each soil texture. The Scientific data427https://www.ebi.ac.uk/biostudies/studies/S-EPMC11903785biostudies-literatureA global dataset of average specific yield for soils.PMC11903785Lv MZha YWang LYang ZLfalseA global dataset of average specific yield for soils.Specific yield (S_y) stands as a critical parameter and a significant source of error in groundwater simulations. However, there is still a lack of reliable global S_y datasets. Based on the trilinear graph of S_y and soil textures, we develop a comprehensive global dataset of gridded average specific yield (GASY) aimed for various soil textures, which are obtained from the Global Soil Dataset for Earth System Models, the SoilGrids product, and the Harmonized World Soil Database. Validations with existing S_y values estimated by laboratory and field methods across different S_y concepts, at the aquifer-scale to global-scale, compellingly revealed that the GASY effectively represents reliable average S_y for each soil texture. The 2025-01-01T00:00:00Z2025 Mar2026-05-29T15:18:42.161Z2025-04-03T23:26:07.991ZS-EPMC119037854007509710.1038/s41597-025-04742-1