LOWER MAKEFIELD, PA – APRIL 4: The Delaware River flowed over its banks flooding homes April 4, 2005 in Lower Makefield, Pennsylvania. Heavy rains over the weekend and snow melting in New York state caused Pennsylvania Gov. Ed Rendell to call states of emergency in numerous towns along the Delaware River due to the worst flooding in 50 years. Acting New Jersey Gov. Richard J. Codey also called states of emergency in the Trenton, New Jersey area. (Photo by William Thomas Cain/Getty Images)