This project was initiated by the Lakes and Waterways Action Group (LWAG) in response to declining water quality of Lake Taupo (Gibbs, 2004). Information was sought on variability of physical and biological parameters across different parts of the lake particularly in relation to use of only one profiling site (Station A) or three profiling sites (Stations A, B, and C) used in previous studies (e.g. Gibbs, 2004). Furthermore, the Taupo District Council (TDC) has a concern that some taste and odour problems (e.g. geosmin) experienced in its water supply may be due to cyanobacteria that accumulate in the near-shore region where water supply intakes are located. The TDC also sought information about variability of phytoplankton biomass across Lake Taupo. The objective of this study was to carry out a series of BIO-FISH transects of Lake Taupo, to observe the variability of temperature, chlorophyll a, dissolved oxygen and conductivity.