Many diseases and conditions are spread by not washing hands with soap and clean, running water. If clean, running water is not accessible, as is common in many parts of the world, use soap and available water.
Riverdale covers about three square miles in area. It has one of the highest elevations in New York City, affording it views of the Empire State Building, George Washington Bridge, Hudson River and New Jersey Palisades.
Riverdale Park, Maryland. Riverdale Park, formerly known and often referred to as Riverdale, Maryland is a semi-urban town in Prince George's County, Maryland, United States, a suburb in the Washington D.C. metropolitan area. The population was 6,956 as of 2010.