Here is a handy little calculator from the fine folks at hyperphysics (one of my favorite web sites for such things). BTW, this is not a high school
subject. I didn't run across this until I took a fluids course eons ago. I taught AP Physics a few years ago and mentioned this, but we didn't do the math because the derivation of this thing is a beast having to do with energy transfer.
I vaguely remember the way the formula looked, but not the numbers. All I really remembered about it is was it had to do with the depth
of the water
and the wave motion looks mostly like a sin wave.
Good luck bouncing around.