New Zealand Environmental Data Stack (NZEnvDS) comprises a set of 72 spatial layers for environmental modelling and site characterisation. NZEnvDS includes the layers that informed the Land Environments of New Zealand (LENZ), additional layers generated for LENZ that were never publicly released, and additional layers generated since, all covering mainland New Zealand and surrounding inshore islands. The original/top copy of the dataset is available at (https://doi.org/10.7931/m6rm-vz40), but the layers are reproduced here for ease of access. See (https://newzealandecology.org/nzje/3440/) for a publication describing NZEnvDS. The normalised difference between the slope height and valley depth, indicating the relative position of a pixel along a slope between valley and ridge. Calculated from the NZEnvDS “elevation” DEM and the SAGA Morphometry module in SAGA GIS version 7.3.0. Please cite the original paper as attribution when using these layers.