Lower Jefferson — Hatch Chart

Jefferson · Cardwell area to Three Forks (confluence with Madison and Gallatin)

Mayflies

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

Caddis

Caddis May–Aug · #12-16 · 54°F

Midges

Midges Jan–Dec · #18-26

Terrestrials

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