As authorities launch one of the largest search-and-rescue efforts in recent Texas history, they have come under intensifying scrutiny over preparations and why residents and youth summer camps that are dotted along the river were not alerted sooner or told to evacuate.

Rescuers were searching for more than two dozen girls missing from a summer camp in Texas after a flash flood killed at least 50 people, 15 of them children. The Guadalupe River that runs through the Hill Country in central south Texas rose by 26ft (8 metres) in 45 minutes in the early hours of Friday,

Numerous flood warnings are active in Texas following devastating floods that have killed dozens. The National Weather Service (NWS) has activated several flood warnings across Texas, many of which are expected to last until at least Monday morning.