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 |
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| Pale Morning Dun |
16-18 |
Yellow/tan body, smoky gray wing |
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| Pale Morning Dun |
14 |
Yellow/tan body, smoky gray wing |
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| Golden Stone Fly |
2-6 |
Mottled dark brown to tan |
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| Green Drake |
14-16 |
Bright green and olive brown markings, color changes |
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| Caddis |
14-16 |
Olive, brown, yellow, black |
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| Baetis |
16-20 |
Blue winged olive |
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| Caddis |
14-18 |
Olive, brown, yellow, black |
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| Salmonfly |
2-4 |
Black/orange with gray wings |
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| Trico |
18-22 |
Dark brown with white wing |
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