catherine clifford reports on the floods that hit hardest in the secluded community of hildale. vehicle! oh, no! >> virginia black capture the moment does co-vehicles were swept away in violent flash floods. inside were two women and 13 children. only three children survived. >> i have children. i am a mother. it is hard. hard for the whole community because they were quite close. close to each other. >> hundreds of meters downstream, several teenagers witnessed the rescue attempts. >> it was up to the windows. they ripped up the airbags and pulled it open, arms and legs just hanging. there was not a pulse. >> it is the worst floods in the area in living memory. >> we realize this is an act of god. >> with a population of around 3000, hildale is the home to the polygamist fundamentalist church jesus christ of latter-day saints. some 80 kilometers away at a national park, four were killed. several are still missing. search and cleanup operations have been held back by further heavy rains and flooding. now to -- genie: now to an alarming report by a conservation group, wwf. it say