Fishable right now
| # | River | Right now | Flow (cfs) |
|---|---|---|---|
| 1 | Gallatin River Montana | 72 · Prime | 430 cfs ✓ |
| 2 | Roaring Fork River Colorado | 72 · Prime | 789 cfs ✓ |
| 3 | South Fork of the Snake River Idaho | 72 · Prime | 10,300 cfs ✓ |
| 4 | West Branch Delaware River New York | 72 · Prime | 674 cfs ✓ |
| 5 | Yellowstone River Montana | 72 · Prime | 2,320 cfs ✓ |
| 6 | Henry's Fork Idaho | 62 · Fishable | 762 cfs |
| 7 | Colorado River at Lees Ferry Arizona | 61 · Prime | 9,210 cfs ✓ |
| 8 | Green River Utah | 61 · Prime | 2,220 cfs ✓ |
| 9 | Missouri River Montana | 61 · Prime | 3,510 cfs ✓ |
| 10 | Provo River Utah | 61 · Prime | 213 cfs ✓ |
| 11 | South Platte River Colorado | 60 · Fishable | 139 cfs |
| 12 | Madison River Montana | 59 · Fishable | 760 cfs |
| 13 | Blackfoot River Montana | 57 · Fishable | 719 cfs |
| 14 | Arkansas River Colorado | 52 · Fishable | 207 cfs |
| 15 | San Juan River New Mexico | 52 · Fishable | 1,030 cfs |
Plan your trip
The flow outlook and the best months to fish each river — so you can pick your week and book a guide for it.
Next 7 days — top rivers in shape now
Gallatin River Montana · prime 400–1,000 cfs
Wed 6 AM 72
Thu 6 AM 70
Fri 6 AM 71
Sat 6 AM 74
Sun 6 AM 79
Mon 6 AM 86
Tue 6 AM 92
Roaring Fork River Colorado · prime 700–2,500 cfs
Wed 6 AM 72
Thu 6 AM 70
Fri 6 AM 71
Sat 6 AM 74
Sun 6 AM 79
Mon 6 AM 86
Tue 6 AM 92
South Fork of the Snake River Idaho · prime 6,000–13,000 cfs
Wed 6 AM 72
Thu 6 AM 70
Fri 6 AM 71
Sat 6 AM 74
Sun 6 AM 79
Mon 6 AM 86
Tue 6 AM 92
Best months to fish
These are the peak months on each river — when flows settle into the prime band and the hatches line up. Pick a river and the month the odds are real, then book a guide for your dates.
Madison River Sep, Oct, Jul, Aug Bighorn River Oct, Nov, Mar, Apr Missouri River Sep, Oct, Apr, Jun Gallatin River Jul, Aug, Sep, Oct Green River Sep, Oct, Apr, May San Juan River Oct, Nov, Jan, Feb Colorado River at Lees Ferry Nov, Dec, Mar, Apr Fryingpan River Sep, Oct, Nov, Jul Yellowstone River Sep, Oct, Aug, Jul Big Hole River Jul, Sep, Jun, Aug
Browse every best-month guide →
All rivers
Pick a river for its live flow, the 7-day bite outlook, the best month to fish, and guided trips to book.
Gallatin River Montana · Prime (72) Roaring Fork River Colorado · Prime (72) South Fork of the Snake River Idaho · Prime (72) West Branch Delaware River New York · Prime (72) Yellowstone River Montana · Prime (72) Henry's Fork Idaho · Fishable (62) Colorado River at Lees Ferry Arizona · Prime (61) Green River Utah · Prime (61) Missouri River Montana · Prime (61) Provo River Utah · Prime (61) South Platte River Colorado · Fishable (60) Madison River Montana · Fishable (59) Blackfoot River Montana · Fishable (57) Arkansas River Colorado · Fishable (52) San Juan River New Mexico · Fishable (52) Deschutes River Oregon · Fishable (47) Fryingpan River Colorado · Fishable (46) Bighorn River Montana · Fishable (37) Big Hole River Montana · Fishable (33) Beaverhead River Montana · Low (27)
Odds are a probabilistic read from live USGS streamflow, each river's published fishable-flow band, the season, and a moon/solunar model — not a guarantee. Flow and weather change fast; a local guide and a current flow check are still your best edge. How fishing forecasts work · our method & sources.