Lava flows, near mile-thick glaciers and ice age floods layered and carved up this landscape.

Climate change is leading not only to droughts, wildfires, and extreme weather. It’s also leading to oxymorons—at least when ...

MILES CITY - New federal maps identifying the flood hazard here show much more of Miles City is in the 100-year flood plain than do the maps being replaced. The draft maps have three-fourths of ...

The update includes amending Section 8.1.2. of the zoning bylaws (Floodplain District Boundaries) to read: “The FPOD (Floodplain Overlay District) is herein established as an overlay district.

Sometimes you'll hear the phrase "100-year flood." Here's how meteorologists define that term and how to see if you live in a flood plain.

The Brief A "100-year flood" means a 1% chance of that level of flooding happening each year. Houston saw three 500-year flood events within three years from 2015 to 2017, including Hurricane Harvey.

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.