Dendroclimate (tree-ring) records provide critical context for climate models, predominantly for the development of high resolution and long-term records of rainfall but are lacking for the Southern Hemisphere and particularly for the Australian continent. This lack of tree ring climate proxies is partly because there has been no systemic investigation of the dendroclimatic potential of long-lived eucalypts and acacias. Here, we present the first multi-century chronology from a eucalypt species (1750-2018 C.E.). The chronology is comprised of 29 samples representing 16 individual karri (Eucalyptus diversicolor F. Muell) trees from near Augusta, Western Australia. The karri chronology developed shows an inter-series correlation of .566, a mean sensitivity of .406 and is stable through time.  The tree-ring chronology revealed a strong positive relationship between rainfall (February-October) for the instrumental period (1900-2018 C.E.) and tree growth (r= .523), which we used to reconstruct mean February-October rainfall over SWWA since 1750 C.E. The 268-year reconstructed rainfall series shows similar step-down changes in annual rainfall observed in the instrumental period (1965-1980 C.E.; 1980-1995 C.E.; 1995-2018 C.E.). Ongoing analyses are assessing these recent rainfall changes in the context of rainfall patterns since 1750 and investigating how rainfall variability reflects variation in the El Nino-Southern Oscillation, SAM or SSTs. Spatially, the reconstruction skill is highest for the broader Cape Naturaliste-Leeuwin region (r= .500), an area that to date has shown poor reconstruction skill from ice core and other distant proxies. We are now seeking to extend this initial study and develop a network of karri-based chronologies across SWWA in order to develop a highly-resolved spatial multi-century record of rainfall for the region.