sentences:  Affected parts of Erie, Genesee, Orleans and Niagara counties in Western New York were declared a "major disaster" area by President George W. Bush on October 24, 2006.As many as 90 percent of the city's trees were estimated to be damaged, including many in the city's cherished parks and parkways, which were designed by landscape architect Frederick Law Olmsted.The damage constituted a significant setback to Buffalo's 
  urban reforestation agenda, which had aimed to increase the city's tree canopy from its estimated 2003 levels of 12% to more closely approach the national average of 30%.