At the Coastal Marine Group at Waikato University, New Zealand I am estimating large scale groundwater processes between land and coastal ocean using natural radiochemical tracers. I am investigating the role of groundwater as a pathway for dissolved nutrients into Tauranga Harbour, New Zealand's largest commerical port. My project is funded by the Bay of Plenty Regional Council and aims to address the increasing macro-algae blooms occuring in the harbour. Extensive observational data and hydrodynamic modelling is integrated to provide insights into the sources and pathways of dissolved chemicals in coastal environments. This work is in collaboration with Southern Cross University and is made possible through the loan of a Radium Delayed Coincidence Counter (RadeCC) from Isaac Santos at the National Marine Science Centre.