On July 28, 2021, Watershed Cairns reached the Gulf of Mexico.
For more than ten years, Libby Reuter and Joshua Rowan have temporarily placed and photographed glass cairn sculptures from the headwaters of the Missouri in the mountains of northern Montana. the Mississippi River at Lake Itasca in Northern Minnesota, and the Ohio River’s origin in Pittsburgh, Pennsylvania.
The purpose of this project is to make visible the fresh water system that nourishes forty-one percent of the continental United States. This Google Earth image shows yellow pins at most of the four hundred locations marked by Watershed Cairn images .