highwaterline 1
Jayme Gershen

This is a story about an all-American machine, and two women who are leading an unusual effort to prepare our cities for climate change.

The machine is known as a Heavy Hitter. It’s an aluminum box about the size of a bulldog that rides on 10-inch diameter pneumatic wheels. Push the Heavy Hitter forward, and a spring-loaded gizmo inside sifts a dusty line of powdered chalk onto the ground below.