Cornell Cooperative Extensions of Columbia and Greene Counties has compiled a set of factsheets with timely, practical and research-tested information to assist with flood recovery efforts — everything from restoring water wells to removing mold. You can find them at the Agroforestry Resource Center website.
Two factsheets of particular horticulture interest:
Rick Harper, Cornell Cooperative Extension of Westchester County, suggests this roundup of factsheets from the University of Tennessee: Managing Storm and Disaster Damage in Landscapes and Nurseries.
Update from Steve Reiners (9/28/2011):
This factsheet from the University of Vermont contains great information for growers that are dealing with produce from flooded fields. I think it has answers to a lot of the questions we are getting in eastern New York: Frequently Asked Questions About Handling Flooded Produce.