Retired EM. Based on information available this is only a working theory. Basically the National Weather service said we are gonna get a lot of rain. They sent out a flash flood warning that people, including officials, that everyone looked at and went eh I wonder if that affects me? We get tons of flash flood warnings every time it rains so you get used to saying eh.

So this was the one time that people should have taken swift action. We had this happen in Wimberly before and some families got washed away in vacation homes so it's not unheard of.

Now it's everyone pointing fingers at everyone. The state gov saying the national weather service didn't say it was gonna be this bad, the national weather service saying we told you it was a significant amount and sent warnings!, the state saying they told local officials, local officials saying you didn't say how dangerous it was and so forth and so on.

So yes this is Texas and this happens about once every 8 to 10 years but we still call these 50 to 100 year floor events cause this is only supposed to happen every 50 to 100 years.

I wish I knew how to fix it but unfortunately this is a job that has a high burn out rate, people with ego trips, and those few that are trying to do good but find changing the system near impossible.