Apply constant velocity river routing

Implements a simple constant velocity routing algorithm which can be used with arbitrary timesteps.

accumulate_runoff_constant(HS, velocity = 1, verbose = FALSE)

Arguments

HS	A HS object.
velocity	Flow velocity. Can be a constant, or a vector of flow velocity at each unique river segments. Defaults to 1 meter per second.
verbose	Whether to print progress indication or not.

Value

Returns the input object HS) with an added list column discharge_ts containing routed discharge estimates for each river segment.