Abstract: The fundamental way out for cyanobacteria (blue-green algae) bloom control is early prevention and mitigation of its excessive growth. The algal growth curve pattern gives us control times and concentration scopes to take early actions. As long as we understand cyanobacteria’s growth regularities, vertical and horizontal movements, and surface accumulation processes, taking measures of early prevention and large-scale mitigation, eliminating threaten of cyanobacteria on drinking water resources and reducing other negative impacts of cyanobacteria bloom are totally possible.

Key words: cyanobacteria, vertical and horizontal movements, algal growth, early prevention, flushing, chemical control