The environmental demand node can be modelled as part of a floodplain (as shown in Figure 1). The interaction between the river channel and the floodplain has been included by linking a splitter node to the river channel to represent an effluent that leads to inundation of the floodplain. In this example, you can define the floodplain flow requirement explicitly of the required flow in the main river channel to force water down the effluent. The ordering system will determine the flow requirement in the main channel of the river to ensure that the floodplain requirement is met.
Figure 1. Environmental demand, floodplain
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