Access & Logistics

Current Conditions

Flow Rate
2410 cfs
Trend Trend
๐Ÿ”ดDropping Fast - โ‰ค -30%
๐ŸŸ Dropping - -10% to -30%
๐Ÿ”˜Stable - -10% to +10%
๐Ÿ”ตRising - +10% to +30%
๐Ÿ”ดRising Fast - > +30%
0%

Flow data from USGS, USBR .

Hatch Guide for Yellowstone River - Columbus to Billings

Gear Recommendations

ROD 5-6wt
LEADER 9ft , 3X-4X taper
TIPPET 3X-5X
INDICATOR Thingamabobber or foam
RIG Indicator nymph (2-fly)
Fish: 12-18 inches avg, trophy to 22+

โš ๏ธ REGULATIONS

Yellowstone River - Columbus to Billings (2026 MT regulations, Central District; the Central/Eastern district boundary is the I-90 bridge at Billings, this section's downstream end): no special gear restrictions on this reach. Standard Central District limits apply: combined trout 3 daily and in possession, only 1 over 18 inches, only 1 may be a cutthroat trout. Smallmouth bass 10 daily and in possession (Springdale Bridge FAS to the North Dakota border). Hook and line: 1 line with 2 hooks per line, except from the Hwy 212 bridge in Laurel downstream to the I-90 bridge where 2 lines with 2 hooks per line are allowed all year. Open year-round. Check FWPโ€™s restrictions and closures for any additional limits. Valid Montana fishing license required. See https://fwp.mt.gov/fish/regulations.

View official Montana regulations โ†’

*Verify current regulations before fishing. Rules may change.

Map Yellowstone River - Columbus to Billings

Nearby Rivers to Fly Fishing Yellowstone River – Columbus to Billings

Fish Species

Fly Fishing Yellowstone River - Columbus to Billings

Overview

The Yellowstone from Columbus to Billings moves through broad cottonwood bottoms, gravel bars and sandstone bluffs. Islands divide and rejoin the current, while the Clarks Fork adds water and sediment below Laurel. Trout water gives way toward a broader mix of cool- and warmwater fish as the river approaches Billings.

Working the Transition Water

Brown trout, rainbow trout and mountain whitefish are part of the riverโ€™s fishery, alongside smallmouth bass and other species farther downstream. Channel shape and tributary inflows make the riverโ€™s character vary along the reach. Look for a defined seam, the drop below a gravel shelf or the softer water beside a bend.

A streamer can cover a deeper edge or submerged structure. Vary its depth and retrieve with the current and fishโ€™s response. Stonefly and attractor nymphs offer subsurface choices for riffles and runs, while weighted crayfish patterns provide an option around rocky smallmouth holding water.

Hoppers, ants and beetles offer terrestrial patterns beside vegetation. Where fish rise, caddis and blue-winged olive imitations broaden the surface box. A carefully placed dry or hopper-dropper can cover a bank-side seam without dragging line across the stronger current beyond it.

Snowmelt and the Clarks Fork affect clarity, and gravel bars and side channels change as the river redistributes sediment. Choose a presentation for the water at the selected lie. The reachโ€™s appeal is its changing channel and fish community as a large mountain river moves toward the plains.