← Jefferson
Upper Jefferson
Updated 37m agoJefferson · Twin Bridges (Big Hole / Beaverhead confluence) to Cardwell area
What's Hatching Now
Seasonal Chart →
Yellow Sallies
Isoperla
Hook: #8-16
| Dries |
Yellow Stimulator #10-14
|
| Nymphs |
Montana Jig Sally #14-16
Yellow Sally Nymph #12-16
|
Caddis
Tricoptera
Peak
Hook: #12-16
Starts ~54°F
Mother's Day caddis strong here
| Dries |
CDC Caddis #14-18
Corn Fed Caddis #14-18
Elk Hair Caddis #14-18
X-Caddis #14-18
|
| Nymphs |
Hare's Ear Nymph #12-18
|
Midges
Chironomidae
Favorable
Hook: #18-26
Year-round
| Dries |
Griffith's Gnat #18-22
|
| Nymphs |
Mercury Midge #20-22
Spanish Bullet #16-18
Zebra Midge #18-22
|
Report conditions: 1330 cfs · 57.9°F · ▼ 5.0% 24h · ↓71% median
Upper Jefferson is in excellent shape with flows at 1330 cfs and water temps at 58°F. Yellow Sally stoneflies and caddis are active, making this prime dry fly water. Focus on Mother's Day caddis patterns during evening hours and Yellow Sally dries during the day. Nymphing remains productive in deeper runs with midge and caddis larvae patterns.
| Conditions | Clear, Stable |
| Nymphing | Zebra Midge #20, Caddis Larva #14, Yellow Sally Nymph #12, Pheasant Tail #16 |
| Dry Fly | Yellow Sally #12, Elk Hair Caddis #14, X-Caddis #16, Griffith's Gnat #20 |
| Streamer | Woolly Bugger #8, Sculpzilla #6 |
Based on current conditions and local shop reports · 3d ago
Conditions
Near Twin Bridges
37m agoClear
| Flow | cfs · 3.74 ft · 61.0°F |
| Trend | ↓76% med · ▼ 0.9% 24h |
| Wx | 56° · 💨 19 NNE · 🌧️ 0% · H: 81° / L: 53° |