My wife and I happened to be driving up to Rochester, NY from Baltimore last Thursday. We got to see the flooding on the Susquehanna firsthand - in fact, in Camp Hill on US 15, water very nearly made it onto the roadway and probably did after we went through - my understanding is that the river had not yet crested there.

I believe, and this could be quite untrue, that flooding like that may be augmented by an increase in impermeable surfaces. Since AGnes in 1972, US 15 has grown in size, and with it has come commerce. What was once an incredible farmland floodplain has accepted its share of parking lots and other developments.

Not being critical, just hypothesizing. With less ground surface to accept and hold water, that same water runs off and inundates the river.

Our prayers go out to anyone touched by this disaster, wherever they may be.

Marty
MFTG