HydroGeoSphere/River Flux

NOTE: not tested or fully implemented, but will be something like this

Assigns a river flux boundary condition, as described in Section 3.7.1 to nodes in the specified set. These nodes are normally located on the surface of the domain. For river flux nodes, water may flow in or out of the domain depending on the difference in head between the river node and the specified river head value.

The following instructions can be used as input to the Type instruction inside the Boundary condition...End instruction group to assign a river flux boundary condition:

Simple river
Sets the input type to be a river flux drainage boundary condition.
 * &bull; &bull; &bull;

For example:

This example shows the use of a time value table instruction to define the river conductance (1.e-5) and river head (25.) values. This would not be very useful in most cases, since conductance and head vary from node to node along a river. In such cases, the inputs would be defined by a time file table, with unique values given for each node:

Here, the river flux boundary condition would become inactive after time 1000 and the nodes would become unconstrained. In this case, the file my_river.lst would contain two values per line, the river conductance and head value, and one line for each node in the set.