Some of the most devastated areas by Harvey, the fiercest hurricane to hit the U.S. in more than a decade and the strongest to strike Texas since 1961, were inaccessible to rescuers in the region between Corpus Christi and Houston, Texas.
The forecast for days of steady rain threatened to inundate the region's flat landscape, including Houston, with as much as 40 inches (100 centimeters). In the island community of Port Aransas, population 3,800, officials were unable to fully survey the town because of "massive" damage. Some of the worst damage appeared to be in Rockport, a coastal city of about 10,000 that was directly in the storm's path. Gov. Greg Abbott said it would probably be several days before electricity is restored for about 300,000 customers. In Houston, authorities pleaded with people not to leave their homes as a flood emergency was declared.
Police officers and firefighters rescued many people from floodwaters. Helicopters, boats and high-water vehicles had been deployed, Residents reported calling 911 and getting no answer. The Red Cross command center in Houston became physically isolated amid floodwaters. The National Hurricane Center described the flooding as "catastrophic." President Donald Trump announced he will visit Texas state on Tuesday. He posted online about the hurricane repeatedly. Flights have been grounded at both of Houston's busy airports. More than 1,400 cancellations extended into Monday and another 450 into Tuesday. Flood damage in Texas from Hurricane Harvey may equal that from 2005's Hurricane Katrina, the costliest natural disaster in U.S. history, which resulted in more than $15 billion in flood insurance losses ,said an insurance research group on Sunday.