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It will take months to complete remediation of the largest sinkhole in Pasco County, Fla.’s recent history, county officials say.

The Tennessee Valley Authority expects it will cost about $2 billion to excavate leaking coal-ash storage ponds at its Cumberland River power plant, near Nashville.

After Miami Beach’s Sunset Harbour neighborhood experienced extreme foot-deep “sunny-day flooding” because of a king tide, city engineer Bruce Mowry and public-works director Eric Carpenter realized the city’s injection-well drainage system didn’t work.

As sea levels rise—compounding coastal problems such as erosion, storm surge and tidal flooding—engineers are changing the way they work, using adaptive design and new technologies to prepare for an uncertain future

When Seattle looked to rebuild its 100-year-old Elliott Bay seawall in the downtown, planners knew it had to be stronger and better, but it didn’t necessarily have to be taller.

Rising sea levels, as well as droughts and earthquakes, threaten the levees protecting the Sacramento-San Joaquin river delta, which supplies 25 million Californians with fresh water.