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A wetland cluster is a group of wetland storage nodes and hydraulic connectors connected by wetland links, bounded at a hydraulic connector node, or storage with either standard inlet/outlet connection(s) or a single wetland link. The hydraulic behaviours of elements within wetland cluster interact with each other. A cluster comprises of cells (wetland storages) and connectors (wetland links).
Source uses the concept of cells to represent various components of a wetland:
The hydraulic connector node represents a boundary condition; a wetland link is a connector; and a wetland storage is cell
A wetland link connects storages in a wetland, or a wetland to a river. These links use a hydraulic rather than hydrological model. There are different types of wetland link to reflect differences in hydraulic properties – e.g. conveyances, weirs, pumps and culverts.
A wetland storage is a special case storage node that takes into account the hydrological behaviours of a wetland including evapotranspiration, infiltration and vegetation response to change in hydrological conditions i.e. inundation.
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If RL1 is the Connector side (river head height m AHD) and RL2 is the wetland side (head height m AHD) of the link, weighting of 0.5 is the average of the head height of RL1 and RL2.
If 0 were used instead, the head height of the Connector would be used to work out the reduced level to determine the direction of the flow of water and if 1 were used, the wetland head height would be weighted.
The weighting uses the same principle as Muskingum x (detailed in storage routing), where x is the weighting factor denoting the importance of inflow relative to outflow.
Figure 3 shows details of the Target Flow tab of the wetland link feature editor. Check the Flow Regulated checkbox if you wish to
Figure 3. Link (Wetland, Target flow)
Ordering at wetlands
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