Bioswale Flow & Sediment Trapping Simulator (2D)

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 2D cross-section 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. Drag the probe along the channel to inspect local hydraulics, watch the live hydraulic-profile graph beneath it, and 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.