Standard boundary conditions for the River model are defined in the Standard boundaries dialogue. This page is used to specify common boundary conditions such as water levels and inflow hydrographs as well as conditions related to lateral flows along river reaches, solute concentrations of the inflow hydrographs, various meteorological data and certain boundary conditions used in connection with structures.
Boundary conditions defined in the Standard boundaries dialogue are visible in Map view with specific symbols depending on the type of boundary (Water level, discharge, Q-h relation, etc.). Using the Boundaries ribbon tools, boundaries can be selected, added, edited or deleted from the map. Editing a point-type boundary condition (for instance a discharge boundary with Point source type) will move the boundary along the river branch, whereas editing a distributed boundary (for instance a Distributed source) will move either the upstream or downstream end of the boundary and will therefore edit its length.
A boundary can be added to or removed from the river model by using the Append ‘+’ and Delete ‘-’ buttons above the overview table. Alternatively, clicking the “Create open end boundaries” button will add all the open boundaries of a river network to the boundary table simultaneously, unless they are already defined in the table.
The properties of a river model boundary can be displayed in Property view.
The following parameters must be entered for the river model boundaries.
Hydrodynamic
AD / WQ boundary
ST Boundary