Fishable right now
| # | River | Right now | Flow (cfs) |
|---|---|---|---|
| 1 | Beaverhead River Montana | 100 · Prime | 529 cfs ✓ |
| 2 | Big Hole River Montana | 100 · Prime | 569 cfs ✓ |
| 3 | Blackfoot River Montana | 100 · Prime | 969 cfs ✓ |
| 4 | Fryingpan River Colorado | 100 · Prime | 199 cfs ✓ |
| 5 | Gallatin River Montana | 100 · Prime | 440 cfs ✓ |
| 6 | Henry's Fork Idaho | 100 · Prime | 897 cfs ✓ |
| 7 | Madison River Montana | 100 · Prime | 1,440 cfs ✓ |
| 8 | South Fork of the Snake River Idaho | 100 · Prime | 11,800 cfs ✓ |
| 9 | Yellowstone River Montana | 100 · Prime | 3,140 cfs ✓ |
| 10 | Arkansas River Colorado | 85 · Prime | 323 cfs ✓ |
| 11 | Colorado River at Lees Ferry Arizona | 85 · Prime | 8,070 cfs ✓ |
| 12 | Green River Utah | 85 · Prime | 1,730 cfs ✓ |
| 13 | Missouri River Montana | 85 · Prime | 3,600 cfs ✓ |
| 14 | San Juan River New Mexico | 85 · Prime | 843 cfs ✓ |
| 15 | South Platte River Colorado | 85 · Prime | 184 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
Beaverhead River Montana · prime 500–1,000 cfs
Wed 6 AM 100
Thu 6 AM 99
Fri 6 AM 95
Sat 6 AM 90
Sun 6 AM 83
Mon 6 AM 77
Tue 6 AM 73
Big Hole River Montana · prime 500–1,800 cfs
Wed 6 AM 100
Thu 6 AM 99
Fri 6 AM 95
Sat 6 AM 76
Sun 6 AM 71
Mon 6 AM 66
Tue 6 AM 62
Blackfoot River Montana · prime 800–2,800 cfs
Wed 6 AM 100
Thu 6 AM 99
Fri 6 AM 95
Sat 6 AM 90
Sun 6 AM 83
Mon 6 AM 77
Tue 6 AM 73
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.
Beaverhead River Montana · Prime (100) Big Hole River Montana · Prime (100) Blackfoot River Montana · Prime (100) Fryingpan River Colorado · Prime (100) Gallatin River Montana · Prime (100) Henry's Fork Idaho · Prime (100) Madison River Montana · Prime (100) South Fork of the Snake River Idaho · Prime (100) Yellowstone River Montana · Prime (100) Arkansas River Colorado · Prime (85) Colorado River at Lees Ferry Arizona · Prime (85) Green River Utah · Prime (85) Missouri River Montana · Prime (85) San Juan River New Mexico · Prime (85) South Platte River Colorado · Prime (85) Roaring Fork River Colorado · Fishable (61) Bighorn River Montana · Fishable (43)
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.