This dataset provides a structured classification of environmental sustainability impact indicators developed within Task 2.1 of the GEOAI4ESRSE4 project. Each impact indicator is referenced using a three-level hierarchical identifier. The first level represents the impact domain, the second level defines the environmental category, and the third level specifies the individual environmental indicator. For example, the identifier 1.3.3 refers to the third indicator within the soil impact category under localised impacts, representing soil erosion caused by wind or water processes. This hierarchical structure allows environmental indicators to be systematically categorized and interpreted within geospatial analysis and sustainability monitoring frameworks. Example indicator entry: Identifier Level 1 Level 2 Level 3 Indicator 1.3.3 Localised impacts Soil impacts Soil erosion Soil erosion caused by wind or water processes The dataset is organized as a collection of ZIP archives, each corresponding to a specific environmental impact category. Each archive contains the following file types: File type XLS PNG TXT RIS DOCX These files provide the supporting materials associated with the environmental indicators defined in the dataset. 10.5281/zenodo.18863598