Trout Fishing Seasons for Southwest Montana, Yellowstone National Park and Idaho
Madison River
Hebgen Dam to Quake Lake — Open Year Around
Quake Lake to Mc Atee Bridge — Open third Sat. in May through end of Feb.
Mc Atee Bridge to Ennis Bridge — Open Year Around
Upstream from Hebgen Lake in Montana — Open fourth Saturday in May through November 30
Other Tributaries To Hebgen Lake in Montana — Open third Sat. in May through November 30th
Gallatin River
North of Yellowstone Park — Open Year Around
Yellowstone National Park
Most Rivers and Creeks in Yellowstone National Park — Open the Saturday of Memorial Day Weekend through first Sunday in November.
Yellowstone Lake — Open June 15 through first Sunday in November.
Yellowstone River Upstream from Hayden Valley
Yellowstone River — Open July 15 through first Sunday in November.
Idaho
Henry’s Fork — Open fourth Saturday in May through November 30
Henry’s Lake — Open fourth Saturday in May through November 30