The application of the aggregative approach in simulation modeling of water resources systems

This is a discussion about constructing simulation models for complex water resources systems (WRS). They are based on the piecewise linear aggregates theory developed in the U.S.S.R. The method allows us to lay down general principles for the construction of such simulation models and automate water resources calculations. Water resources systems simulation models incorporate balance equations, describe water resources inputs into and outputs from sites and reservoirs, and algorithms for both reservoir control and water distribution at sites. Water reservoir control is based on rule curves. The aggregative approach is especially efficient in constructing such algorithms for coordinated control of reservoirs.