Sycamore tree approx. 50' tall, est. 2' diameter B.H. is sloughing off bark like mad, it seems, this year. Could this be due to the excessive rainfall in recent weeks (Here in Olney, we had 9.75" in June 2015, over 2X the "normal" amount of precipitation) or some other cause? The enclosed photos show the tree in situ as well as the bark detritus.There is no apparent indication of excessive insect infestation or other wildlife activity. We've lived in our present location since 1996, and the tree was a "young adult" then, just to give you some idea of the tree's age. We'd be grateful for your prognosis and thoughts about our tree. Many thanks for any information you can supply.