🦫 Beaver Ecosystem Simulator: Autumn Dam, Waterfall, Plant Growth, Rain, Trout and Eagle — 2D Dam Section and Phase Plane

2D companion of the beaver ecosystem lab: a side cross-section of the stick dam with hydrostatic pressure arrows, weir and seepage flows, the stage-discharge rating curve, a hydrograph, and the trout-eagle phase plane. Uses the same model code as the 3D version.