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Hatch Chart for Madison River, MT

Insect Size Body/Wing Color Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Midge 16-20 Black, olive and cream bodied
Pale Morning Dun 16-18 Yellow/tan body, smoky gray wing
Pale Morning Dun 14 Yellow/tan body, smoky gray wing
Golden Stone Fly 2-6 Mottled dark brown to tan
Green Drake 14-16 Bright green and olive brown markings, color changes
Caddis 14-16 Olive, brown, yellow, black
Baetis 16-20 Blue winged olive
Caddis 14-18 Olive, brown, yellow, black
Salmonfly 2-4 Black/orange with gray wings
Trico 18-22 Dark brown with white wing