A 100-year flood does not mean a flood that happens once every century. It describes a flood with a one-percent chance of occurring in any given year. That probability does not change after a flood ...

The Trump administration called the July Fourth Guadalupe River flooding a "100-," "500-" or "1,000-year flood" during a Friday visit to Kerrville, prompting questions about the meaning of the term.

Federal regulators repeatedly granted appeals to remove Camp Mystic’s buildings from their 100-year flood map, loosening oversight as the camp operated and expanded in a dangerous flood plain in the ...

Federal regulators repeatedly granted appeals to remove Camp Mystic's buildings from their 100-year flood map, loosening oversight as the camp operated and expanded in a dangerous flood plain in the ...

Downtown Machias faces flood risk from both directions — rising sea levels in the ocean and swelling river tributaries fueled ...

During the same week as the devastating flooding that killed more than 130 people in Central Texas, there were four major rare rainfall events in several other parts of the United States. John Nielsen ...

Federal regulators repeatedly removed dozens of Camp Mystic’s cabins from their 100-year flood maps — clearing the way for the camp to expand into the dangerous floodplain years before the Guadalupe ...