The catastrophe was caused by a perfect storm of difficult-to-forecast rainfall and fast-moving water. Some wonder if budget cuts made things worse.

Here's what we know so far on the Texas flash floods, including where the flooding is happening, when storms could end and what could happen next.

In 1987, sudden and intense rainfall caused the river to surge at an unprecedented rate in mid-July, leading to a tragedy that killed 10 campers at Pot O' Gold Christian Camp, a summer camp near Comfort, Texas. The campers drowned when their bus attempted to evacuate them and was overtaken by floodwater.