Pressure ridges should/would probably form where there is a convergence of wind and/or water currents.
So, if a body of water has a spring or inlet near where a ridge forms, it probably does the same in the same area every season.
Winds would likely be more of a factor during the freezing/locking-up period since it wouldn't have the same affect on a 6-12 inch base (unless maybe if it's gale to hurricane force winds?)...