Hey Jeff,
Just a thought on water temps as my pond has been filling for the first time since de-mucked last year and I had installed FHM before these recent rains. My pond came up about 3 feet over a long weekend and temps crossed my mind. I do not have any temp readings, but I am thinking that the pond water temps did not vary much from the rain water temps. Since it's spring and the pond has not had much time to warm and the rain was not part of a real cold front, I am betting that the water temp swing was minimal. Not sure if that's worth two cents, but my thoughts are free.
As far as rising water, I'm sure it had an affect on eggs hatching, but that is definitely out of my wheel house.
I, too, have some grass and land plants that are now submerged and the frogs are loving these weeds to lay their eggs on and the toad tadpoles seem to enjoy hiding in them although there are no predators in the pond yet. You should get some benefit from the submerged land plants while they last.
