and this new threat facing the assistance. for example, the ceo of walmart flood-ravaged state of texas. here's a quote. get out now. that is the stark warning to is providing additional water folks just south of houston as supplies, towels, blankets, for the river levees breached a short time ago and as harvey is now circling back over land, one of the shelters that we are officials say river water is opening today. just pounding down, tributaries >> we've heard from some other and creeks and that they are, quote, at the end of the line. folks trying to volunteer in the dire predictions of up to area shelters and concerns about 50 inches of rain quickly becoming a reality. last rainfall estimates, a the red cross doesn't know that there are, in some cases, not staggering 49 inches of water in some areas. that is more rain than houston sufficient supplies, that sees in an entire year. there's a lack of communication about what is needed. just extraordinary rescue scenes have been playing out for days now. here you have two women caught there have been delays in processing volunteer in a wild flood waters, swimming applications, people trying to help. have you heard of that? frantically before being dragged >> well, i mean, i think we have to safety by a member of the customs and border protection to put this particular -- in the unit. another instance, an elderly woman evacuated out on a proper context. number one, the rainfall was stretcher. >> reporter: woman who's in her simply unprecedented and the rainfall was very widespread, 80s has just been rescued from and it just didn't impact