Western United States Hatch Chart

Click the link for full chart and print friendly version. 2013 Hatch charts

Common Name	Fly Size	Recommended Fly	June	July	August	September	October
Midge	16-26	Nymph, Emerger, Adult	X	X	X	X	X
Brachycentrus Caddis	12-18	Nymph, Emerger, Adult, Spent Adult	X	X	X	X
Slate Gray Dun	12-14	Nymph, Emerger, Dun, Spinner	X	X
Pale Morning Dun (	14-18	Nymph, Emerger, Dun, Spinner	X	X	X	X
Salmon Fly	4-8	Nymph, Adult	X
Rhyacophila Caddis	12-16	Nymph, Emerger, Adult, Spent Adult	X	X	X	X
Western Green Drake	10-12	Nymph, Emerger, Dun, Spinner	X	X
Brown Drake	8-12	Nymph, Emerger, Dun, Spinner	X	X
Small Western Drake	14-16	Nymph, Emerger, Dun, Spinner	X	X	X
Spotted Sedge	14-16	Nymph, Emerger, Adult, Spent Adult		X
Slate Cream Dun	14-18	Nymph, Emerger, Dun, Spinner		X	X
Western Red Quill	14-16	Nymph, Emerger, Dun, Spinner		X	X	X
Speckle Wing Quill	14-16	Nymph, Emerger, Dun, Spinner		X	X	X	X
Western Gray Drake (	10-12	Nymph, Emerger, Dun, Spinner	X
Trico	20-24	Nymph, Emerger, Dun, Spinner	X	X	X	X
Blue Winged Olive	18-22	Nymph, Emerger, Dun, Spinner	X	X	X	X	X
Mahogany Dun	18-20	Nymph, Emerger, Dun, Spinner			X	X	X
Tiny BWO	20-24	Nymph, Emerger, Dun, Spinner			X	X	X