As we continue to grieve the loss of so many Hill Country flood victims, there is a lot of information being thrown around. KSAT wants to remind people what a “100-year flood” actually means.

It is not unheard of to have multiple “100-year floods” or "1,000-year floods” in the same year, says John Nielsen-Gammon, the Texas state climatologist.

Both Texas and North Carolina experienced “1,000-year floods” this week. But what does that mean, and how could we see so ...

After nine years, repair work continues on the Columbia Canal. On the anniversary of the 1,000-year flood that damaged the canal, City of Columbia leaders gave an update on several major projects ...

A 500-year flood means such an event has a 1 in 500 chance, or 0.2 percent, of occurring in a year. Another concept scientists use is how frequently an event of a certain intensity is expected.

With Central Texas devastated by deadly floods, many are asking: What’s a 100-year or 1,000-year flood, and are these terms ...

After nine years, repair work continues on the Columbia Canal. On the anniversary of the 1,000-year flood that damaged the canal, City of Columbia leaders gave an update on several major projects.

If you live in a 1-percent AEP (100-year) flood zone, writes USGS, the odds of being flooded at least once over a 30-year mortgage are 26%. That's about a 1 in 4 chance.

If you live in a 1-percent AEP (100-year) flood zone, writes USGS, the odds of being flooded at least once over a 30-year mortgage are 26%. That's about a 1 in 4 chance.

So no, a 100-year flood doesn't mean it can only happen once in a century. And with all the bayous, creeks and rivers in the area, our experts say don't be overconfident.