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Green River Hatches
Insects
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hatch Time
Patterns
Mayflies
                           
Blue Winged Olive                        
M/A
BWO Dun, Para Adams, BWO Nymph, Pheasant Tail, Gray Spinner, No-Hackle Dun, Hares Ear (Sizes 18-22)
Pale Morning Dun                        
M/A
Quill Body, Light Cahill, Para Adams, Quigley Cripple, Rusty Spinner, Pheasant Tail, Hares Ear, No-Hackle Dun (Sizes 16-18)
Western Black Quill                        
A
March Brown, Pheasant Tail, Hares Ear, March Brown nymph (Sizes 14-16)
Trico- White Winged Black                        
A
White Winged Black, Pheasant Tail, Midge Pupas, Trico Poly Wing Spinner (Sizes 18-22)
Stoneflies
                           
Little Yellow Stonefly                        
M/A
Yellow Stimulator, Little Yellow Stone Nymph, Elk Hair Caddis (Sizes 12-16)
Golden Stonefly                        
M/A
Kaufmann's Golden Stone, Bitch Creek, Dark Stimulator (Size 10-12)
Tiny Winter Black Stone                        
M/A
Early Black Stonefly nymph, Little Brown Stone dry, Dark Stimulator (Sizes 14-16)
Caddisflies
                           
American Grannom- Mother's Day Caddis                        
A/E
CM's Peeking Caddis, Cased Caddis, Sparkle Pupas green/tan, Elk Hair Caddis, X-Caddis, Soft Hackles (Sizes 14-16)
Little Spotted Sedge                        
A/E
Latex Caddis, Sparkle Pupas brown/green, Elk Hair Caddis (Sizes 14-16)
Spotted Sedge                        
A/E
Latex Caddis, Sparkle Pupas yellow/brown, Elk Hair Caddis (Sizes 12-14)
Micro Caddis                        
A/E
Sparkle Pupas yellow/brown/orange, Elk Hair Caddis (Sizes 18-20)
Green Sedge                        
A/E
Green Rock Worm, Sparkle Pupas brown/green, Elk Hair Caddis (Sizes 14-16)
Gray Spotted Sedge                        
A/E
Latex Caddis, Sparkle Pupas green/gray, Elk Hair Caddis (Sizes 12-14)
Insects
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Hatch Time
Patterns
Terrestrials
                           
Grasshoppers                           Dave's Hopper, ParaHopper, Foam Hopper, Madame X (Sizes 8-12)
Beetles                           Deer Hair Beetle black/brown, Foam Beetle brown/black (Sizes 16-20)
Mormon Crickets                           Letort Cricket, Dave's Cricket, Henry's Fork Cricket (Sizes 12-14)
Ants                           Black Fur Ant, Cinnamon Ant, Foam Ant, Flying Ant (Sizes 16-20)
Cicadas                           Cicada Trude, Mutanta Cicada, Chernobyl Ant, Madam X, Black Stimulator (Sizes 6-8)
Others
                           
Midges                        
M/A
Griffith's Gnat, Double Midge, Brassie, Midge Emerger, Zebra Midge, Thread Midge, Disco Midge, Serendipity (Sizes 18-24)
Scuds                           Shellback Scud, Flashback Scud, Beadhead Scud (Sizes 14-18)
Sowbugs                           Sunset Sowbug, Shellback Sowbug, RC Bug (Sizes 14-18)
Minnows/Sculpins                           Wooley Bugger, Muddler, Matuka, Clouser Minnow, Mickey Finn (Sizes 4-10)
Craneflies                        
M/A
Herl Nymph, Muskrat Nymph, Giant Cranefly Larva (Sizes 8-12)
Aquatic Worms                           San Juan Worm brown/amber/red/pink/purple (Size 14)
The Green River hatch chart was set-up to include insects on sections A, B, and C. Hatches vary according to each section.