Based on kriging result, I did Hierarchical Clustering to show the distribution similarity of 10 variables (temperature, conductivity, specific conductivity, BAT,transmission, total phytoplankton, zooplankton biomass, zooplankton density,DO, DO sat). Generally, temperature and conductivity, total phytoplankton and BAT and other pairs are in the same group. (i.e. they have similar distribution and highly correlated.) However, in Muskegon 3a path, clustering results shows temperature is not like conductivity, which is confirmed on the interpolation plot. And in Manitowoc3 path, total phytoplankton is different than usual.