Most schools and public pools have the policy of closing swimming areas during thunderstorms for fear of electrocution. I was wondering how logical or reasonable this policy is, given that most pools are relatively small bodies of water in urban or suburban environments with taller building all around. More specifically are there any documented cases of lightning hitting pools or similarly sized bodies of waters (say a pond in a city park) that would justify this?
There is a related question about swimming during a lightning storm however,the question there seems to focus on much larger bodies of water. Like lakes, where there is a distinct possibility that the person (or boat) is the path of least resistance for lightning to hit.