Green River below Flaming Gorge · hatch chart
Year-round, with the cicada hatch in late summer the local event of the year
By month
JanFebMarAprMayJunJulAugSepOctNovDec
| Month | Insect | Stage | Size | Time | Intensity |
|---|---|---|---|---|---|
| Mar | Midges (Chironomidae) | Pupa | #18-22 | 11:00-15:00 | |
| Apr | Blue-Winged Olive (Baetis) | Dun | #18-20 | 12:00-16:00 | |
| May | Caddis (Hydropsyche) | Adult | #14-16 | 17:00-21:00 | |
| Jun | Pale Morning Dun (Ephemerella) | Dun and spinner | #16-18 | 09:00-14:00 | |
| Jul | Cicada (cicada hatch years) | Adult | #6-8 | 10:00-17:00 | |
| Aug | Trico (Tricorythodes) | Spinner fall | #22-24 | 07:30-10:30 | |
| Sep | Scuds and sowbugs | All stages | #14-16 | All day | |
| Oct | Blue-Winged Olive (Baetis) | Spinner fall | #20 | 13:00-16:00 |
Flow and visibility
Flaming Gorge is a power dam, so daily flows can swing from 800 to 2,400 cfs and back inside eight hours. The A section is wadeable below roughly 1,500 cfs; above that, the wading trail is the only safe way down. The dam releases at about 7°C from deep in the reservoir, so the river fishes in February and holds enormous numbers of scuds year-round.
The insect plate
