@Logan, if the weather turns really cold now and the pond freezes, it is very likely that at least most of the spawn may die. Sometimes the spawn underneath will survive. The rest of it will be food for one creature or another. If it does work out like this, it is quite likely that the frogs will just have another try at making some offspring and replace the lost spawn in no time at all. Nature is a wonderful thing and finds an answer to all problems - sometimes though nature has a tough time with stupidly behaved people unfortunately.