But in an unexpected victory that speaks to the pervasive disaster of climate change, the reservoir is now declining and the Colorado River is coming back. Photographers Byron Wolfe (born 1967) and Mark Klett (born 1952), along with writer Rebecca Solnit (born 1961), spent five years exploring the place as expectations and possibilities changed, and the river reemerged at the upper end of the reservoir.

In dialogue with Porter's book, Klett and Wolfe retraced the physical locations where Porter made his photographs, now often submerged by the reservoir's waters. Solnit's accompanying text meditates on the meanings and histories of the place, drawing from both the trio's explorations and archival research.

Drowned River is a book about climate change, about "the madness of the past and the terror of the future" (as Solnit puts it). But it is also a book about how photography can describe beauty and trouble simultaneously, and what it takes to understand a place and to come to terms with the changes we have set in motion.