Bioswale Flow & Sediment Trapping Simulator

A bioswale is a shallow, vegetated channel engineered to slow and clean stormwater runoff before it reaches a storm drain or stream — one of the core building blocks of a blue-green infrastructure network. This simulator solves Manning's equation for the water depth and velocity at every point along the channel, decays the discharge downstream through vegetation-driven infiltration, and tracks individual sediment grains as they settle under Stokes' law. Adjust the storm inflow, channel slope, vegetation density and grain size to see how each one shifts the balance between a fast-draining ditch and an effective sediment trap.