  The representation of small scale barriers, such as sea-walls, in coastal
flooding simulations is a common computational constraint that can be difficult
to overcome due to the combination of the need for resolution and the CFL
constraining time stepping involved in solving the underlying PDE. This article
proposes an approach that uses the state redistribution method (SRD) on shallow
water equations to alleviate these problems while remaining conservative and
geometrically easy to implement. We will demonstrate the method versus two
other comparable approaches along with convergence results. In particular, we
save computational time by reducing time steps fivefold when compared to
simulation with same resolution using adaptive refinement at the barrier.
