Upper Beaverhead — Hatch Chart

Beaverhead · Clark Canyon Dam to Dillon

Mayflies

BWOs (Spring) Mar–May · #14-16
BWOs (Fall) Sep–Oct · #16-22
PMDs Jun–Aug · #14-16 · 58°F
Tricos Jul–Sep · #18-22

Stoneflies

Yellow Sallies Jul–Aug · #8-16

Caddis

Caddis May–Aug · #14-16 · 54°F
October Caddis Sep–Oct · #8-10

Midges

Midges Jan–Dec · #18-26

Terrestrials

Hoppers Jul–Sep · #8-12
Ants Jul–Sep · #14-18
Beetles Jul–Sep · #14-18