A weekend deluge in Texas caused catastrophic flash flooding that has killed at least 89 people, with the numbers expected to rise. Following a long Fourth of July weekend which should have been full of joy and fun, Texans are assessing the damage and searching for those who are lost.

Search efforts continue for the dozens of people still missing after Friday's floods, as questions swirl over what went wrong. Here's what we know so far.

Survivors have described the floods along the Guadalupe River as a “pitch black wall of death” and said they received no emergency warnings.