When poet Lewis MacAdams founded Friends of the Los Angeles River 25 years – imagining a lifelong art project to return the bedraggled waterway to greatness and greenness – to some he might have seemed out to lunch. Now we know he was ahead of his time. (I have the distinction of writing the first-ever article about FOLAR; it was for Los Angeles Downtown News.) Witness the new Piggyback Yard plan. MacAdams has enlisted three top architecture firms to create a plan that not only creates green space along the Los Angeles River, it also performs a crucial flood-control role. The idea, reported in the New York Times, “is that on a few days each year, the river would overflow into the yard. The rest of the year, the land would be a park.” This flood-detention aspect is brilliantly essential to comprehensive revitalization, because flood-control was the reason for encasing the river in ugly, community-dividing concrete more than 50 years ago.