LOS ANGELES — To many locals, the Los Angeles River — hugged by concrete embankments and heavy vehicle traffic — hardly seems like a river at all. The waterway bisecting the city was converted to a ...

Make a gabion wall by wrapping river rock in a cage of galvanized steel wire. A retaining wall can be used for erosion control, privacy or to make an aesthetic statement in the landscape. For a ...

Artist Doug Rosenberg (center) leads a group of volunteers to his guerrilla wetland in the Los Angeles River. (Courtney Theophin/NPR) LOS ANGELES — To many locals, the Los Angeles River — hugged by ...