Calculation material
You test a bottom profile by the water's response to it.
Depth drawings on their own prove nothing. The evidence that counts is the free-surface motion and the sections taken over the profile.
Treat the bottom profile as background geometry and you lose the wave. In surf-pool bathymetry the depths, transitions, reef-like zones, shelves and damping areas are the control surface that turns moving water into a surfable wave.
A bottom profile fixed too late has to compensate for the basin and generation choices already locked in. We check how the profile receives the water impulse, where the wave grows, where it breaks, and where reflected energy comes back to disturb the next cycle.
How depth changes drive speed, slope, height and where the wave breaks.
Whether the target breaking point holds, or wanders with small geometry changes.
Where returning water comes back to interfere with the next wave or the rider line.
Which profile changes are likely to move the free surface, and which won't.
Depth drawings on their own prove nothing. The evidence that counts is the free-surface motion and the sections taken over the profile.
Inputs can include the basin outline, the available depths, the grading constraints, the target wave, the takeoff area and your damping-zone assumptions.
You don't get a decorative depth map back. You get which parts of the profile work, which parts throw off unwanted reflections, and what we'd recalculate.
How the profile supports wave growth, breaking and shoulder behavior.
The sections where the free surface is most sensitive to the bottom profile.
What to adjust before the next water calculation or generation-cycle check.
You can sketch a preliminary profile, but the working one needs the water's response. Without it, the breaking point and the shoulder are just guesses.
The free surface is sensitive to depth transitions and reflections. A local change to the profile can shift the breaking area or weaken the shoulder.
No. The profile only means something together with the incoming water impulse and the repeated generation cycle.
Yes. We can check it for wave shape, sections, reflections and the next geometry changes.
A basin outline, a depth profile, a target wave and the geometry constraints are enough to scope the first check. If the depths are still a sketch, say so — the first thing back is which parts of the profile decide your wave and which ones you can still move.