This dataset is linked to the NSW koala research plan funded project 2023_03 Understanding the confluence of Eucalyptus dieback and koala habitat in NSW – Stage 1. It contains cumulative risk maps identifying NSW koala habitat exposed to multiple interacting threats, including bell miner associated dieback, Phytophthora, salinity and altered fire regimes. Layers integrate forest disturbance and habitat suitability to highlight areas where overlapping dieback processes may pose the greatest risk to koala populations.