Downstream: Reflections on Brook Trout, Fly Fishing, and the Waters of Appalachia is a mosaic combining nature writing, fly-fishing narrative, memoir, and philosophical and spiritual inquiry. Fly-fishing narratives and fragments of memoir provide the narrative arc for exploring relationships between humans and rivers, and the ways in which our attitudes and philosophies impact our practices and the waters we depend on for life. The authors guide their readers on a journey from Maine's Androscoggin watershed--once one of the ten filthiest rivers in the United States and now home to some of the best wild brook trout fishing in the United States--southward through Kentucky into Tennessee and North Carolina, where a native southern strain of brook trout struggles to survive. Like the rivers themselves, the chapters alternate between flowing narratives and the stiller waters that settle out above dams. While each stone in this mosaic is worth a close look in its own right, seen from a distance the book offers a broader picture of the cold mountain waters of Appalachia and their famous native fish: the brook trout.