Southwestern Montana
Best fishing is on Hebgen's Madison Arm for gulpers. Fish during AM when lake surface is calm. Speckled dun spinner, dun, and emerger patterns, size 14-16) Be careful because blue-green algae ( toxic to pets and many domestic animals) bloom is becoming dense along shallows especially in the Grayling Arm. Hoot owl closure still applies to entire Madison River.
Fly Patterns to use:
Project Hopper
Lawson’s PMD
Palomino Caddis Tan