Abstract: Water resource systems can be regard as a complicated large system composed of the natural subsystems and the artificial subsystems.It takes the designed constructed water resource engineering as a controller installed on natural systems, and accounts for time delay factors.The nonlinear water resource time delay control mathematical mode is first set up by considering that the systems are composed of river basin、lakes and diversion works.Stability,optimal control and suboptimal control of the model are discussed.The computational algorithms and results by analysis are provided.

Key words: nonlinear time delay control system, water resource system, stability, optimal, suboptimal