[This dataset is embargoed until December 31, 2026]. This dataset comprises 25 traits related to plant hydraulic function and wood anatomy for 38 individual trees of five dipterocarp species from a site in Borneo. Traits were measured at multiple positions along each tree: at the bottom and the top of the trunk, then at 3 positions along a lower, a middle, and an upper branch in the crown of the tree - so 12 measurement points per tree for the traits. The trees that were measured ranged in height from 7.7 to 71 m in height. These data were all collected following standardised methodologies for each trait sampled and they were all collected during one very large field campaign which took place during 2022. Following this anatomy samples and data were processed. The aim of this data set was to test whether tree height alters the water transport system of trees to make them more vulnerable to the impacts of drought. Full details about this dataset can be found at https://doi.org/10.5285/6ecfd160-4740-491e-a8b3-8cbb3a4c8701