( CNN ) -- The death toll from a string of hurricanes and tropical storms in Haiti has risen to nearly 800 people , an official with the Haitian Red Cross says . A man carries drinking water through the flooded streets of Gonaives , Haiti , last month . Jean Pierre Guiteau , the group 's executive officer , said they suspected the numbers may climb further because many people were still missing . Heavy rainfall from four major storms in August and September created fatal flooding and mudslides in Haiti . Tropical Storm Fay caused flooding and significant damage when it hit the impoverished island nation . Heavy rains from Hurricane Gustav , considered a major hurricane , caused destructive mudslides after it made landfall in Haiti on August 26 , the U.S. National Hurricane Center said . Tropical Storm Hanna passed over northern Haiti in early September , bringing heavy rain and flooding . Ike , another major hurricane , caused flooding and mudslides . The United States has provided more than $ 30 million in humanitarian assistance to Haiti in the wake of the storms , the U.S. Agency for International Development said . The United Nations ' Central Emergency Response Fund has allocated more than $ 4 million for post-hurricane humanitarian aid , the agency said . The U.S. Navy sent the USS Kearsarge to Haiti last month to deliver more than 1,400 metric tons of relief supplies , in support of USAID and the World Food Program . It delivered heavy lift helicopters to carry rice , water , plywood and other supplies to Haitians , and also carried medical and engineering teams to remote parts of the country . Even before the tropical weather struck Haiti , an estimated 2.3 million Haitians had fallen into food insecurity , with dramatic increases in prices for staple foods , USAID has said .
Death toll from string of hurricanes and tropical storms in United States rises to four . Heavy rainfall from four major storms in September and August created fatal flooding . Haiti has provided more than $ 30 million in humanitarian aid .