Yes but that would be the mean high tide of perhaps the last week. If a stormed rolled in, by your logic, the whole beach could be public property. Some states

Yes but that would be the mean high tide of perhaps the last week. If a stormed rolled in, by your logic, the whole beach could be public property. Some states define the mean high tide as the mean over a 18.6-year period or Tidal Epoch. To my knowledge, California makes no such distinction.