The article presents the development of a mathematical model of system dynamics to forecast
the flood effects characteristics. The model is based on a causal diagram and is presented by a system of
nonlinear differential equations. The solution results of the system of differential equations were
compared to real data of the flood that occurred in Primorye in 2001.
The results obtained from the model can be used when developing a new effective action plan for flood
prevention and response or correcting the current action plan.
The FCFAAD information system was developed, which allows calculating the flood effects
characteristics and choosing an action plan for flood prevention and response.