Print chart Close Window

Hatch Chart for Gallatin River, MT

Insect Size Body/Wing Color Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Midge 16-22 Black, olive and cream bodied
Pale Morning Dun 14-20 Pale yellow, grizzled
Grasshoppers 2-8 Tan, yellow, olive bodied
Golden Stone Fly 4-8 Mottled dark brown to tan
Green Drake 10-16 Bright green and olive brown markings, color changes
Little Western Green Drake 10-16 Olive brown
Baetis 16-20 Blue winged olive
Caddis 14-18 Olive, brown, yellow, black
Salmonfly 4-8 Black/orange with gray wings
Mahogony Dun 14-16 Red/brown with dark hackle