I was just thanking the lord for you guys. And a glimmer of hope in one flood shelter. A group of gospel singers lifting spirits with a song. This special edition of nightline, city underwat underwater catastrophe in houston, will be right back. Announcer this is a special edition of nightline, city underwater catastrophe in houston. Good evening. And we are dedicating our show once again tonight to the fastmoving and often horrifying developments out of texas. The rain has largely subsided in houston, but much of that city is underwater and in crisis. Tonight you will see rescuers working under extraordinary conditions and survivors displaying unimaginable resilience. Abcs rob marciano is right there. Reporter houstonians are still trying to get their heads above water. This city ravaged by harvey. As rescues continue for the fifth straight day. By boat were coming right back. Reporter and from the air. Above fort arthur, texas harvey did not let up. In a cbb air marine ops blackhawk
question. reporter: our matt gutman is above the storm zone. reporter: it s basically flooding as far as the eye can see. there are ambulances down there. they are completely submerged. this is still very much an ongoing situation here. reporter: at greens bayou, receding water revealing a grim discovery inside that van. the bodies of six members of the saldivar family. 84-year-old patriarch, manuel, his wife belia, and their four great-grandchildren, the youngest just 6 years old. family, i just notified them. obviously, they are devastated as we all are as well. reporter: they were swept away sunday as they tried to escape the floodwaters, sammy saldivar, the sole survivor. his brother, ric, telling me they were in the front seat with my brother, and he said mom and dad were underwater, you know, like i said, he just panicked and tried to get himself out. reporter: residents in the storm zone returning to get a first look at the damage. it s estimated more than 80% of