bc-class: Boundary Condition Object
In rchlumsk/rcr: River Computations in R

bc: A reference class to create a boundary conditions at a particular location in the model. Note that currently only subcritical mode with normal depth boundary condition at the downstream-most cross-section in the model is supported.

riverstation: name of the cross-section where the boundary condition is applied (character type)
station: station location where the boundary condition is applied along profile (numeric type)
reach: name of the reach
location: description of the boundary condition location as either "Downstream", "Upstream"
bctype: the type of boundary condition applied as "Normal Depth" (only supported type in current version)
bcvalue: the value supplied with the boundary condition, currently the slope for normal depth computation
init_WSL: the initial WSL value passed to boundary condition, used in normal depth calculation