Soil Water Infiltration: Green–Ampt Wetting Front (2D)

This 2D companion replaces the 3D version's generic slider dashboard with the real Green–Ampt infiltration model: pick a soil texture (sand, silt loam, loam or clay — each carrying its own saturated hydraulic conductivity and wetting-front suction head), set a rainfall intensity and starting moisture, then watch a cross-section of the soil column fill from the surface downward. The wetting front descends at a rate set by cumulative infiltration, a live chart tracks the infiltration capacity decaying toward the soil's saturated conductivity as rainfall continues, and once the rain outpaces what the soil can absorb a ponded layer visibly builds on the surface — exactly when the Green–Ampt equation predicts it should.