🪨 River Ford: Stepping Stones, Flow and Wading Hazard Lab - 2D Plan, Cross-Section and Profile

2D companion of the River Ford lab: a plan view with flow streaks and stepping stones, the cross-section at the stone row with the test post and drag arrow, the long profile with afflux and critical depth, and the depth-speed hazard plane. Uses the same hydraulics module as the 3D version.