Good heavens!
I know that flooding was quite devastating in many areas of the Susquehanna Valley. I did not mean to imply that the entire town of Columbia had been spared, given its proximity to the river. However, I haven't seen any announcement regarding the cancellation or delay of the Holologia Festival. Do you live close enough to the Museum itself to tell if it was damaged in the flash flooding? Perhaps I shall email the Museum and inquire.
I hope that you, your loved ones, and your abode were largely unscathed by the flood waters.
Regards.