Do you have a favorite river? Rivers offer an escape from the daily grind — a place to swim, boat, fish, and unwind as they flow downstream.  In Southwest Montana, a group of outdoor enthusiasts are giving back to one of their local rivers through the ASC Gallatin Microplastics Initiative. Photographer Louise Johns captured some of these volunteers sampling for microplastics in the heart of winter.

Learn more about the Microplastics Project and other ASC projects on our website, the Field Notes blog, and our FacebookTwitterInstagram and Google+ pages. Find more of Louise Johns’ work on her website.