GMS:Map to MODFLOW with TINs

At times, instead of assigning values at the upstream and downstream ends of the arc, it is useful to assign a property using a surface. This can be done in GMS using a TIN.

When the arc is discretized onto the model grid, the boundary condition property will be interpolated from the TIN.

[[ BImage:TinModflow2.png|400px|TIN assigned to river stage.]]

Beginning with version 9.1, the user can also assign TINs with transient data sets. This will give users the option to have a surface that changes with time assigned to a boundary condition property. The times associated with the TIN data set can be in date/time format or relative time format.