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Big Timber / Absaroka

Boulder River

No DataIntermediate

Live Conditions

Boulder RiverNear Big Timber

No Data
CFS
Discharge
ft
Gauge Height
Water Temp
⚠ Stale data — No recent dataView on USGS ↗

24-Hr Pressure

23.84 inHg · → High/stable

Falling (good)RisingHigh/stable

Local Weather

48°FOvercast
Wind 2 mph23.84 inHg Low & stable

Tough conditions — fish deep

Today

☁️

Overcast

61° / 41°

Tomorrow

🌦️

Drizzle

67° / 48°

0.07"

Sun

🌦️

Drizzle

70° / 51°

0.03"

Mon

🌧️

Rain showers

58° / 44°

0.17"

Cold front incoming — go deep with nymphs, surface activity likely slow.

Weather by Open-Meteo · No API key · Updated every 30 min

What should I fish today?

One call. Specific to today's exact conditions on the Boulder River.

Time of Day

What should I pack?

Rod, flies, tippet, and safety gear specific to today's Boulder River conditions.

🪰 Hatch Calendar

Boulder River · June · Early Summer

Full calendar →

Showing typical dates — water temperature data unavailable for live hatch predictions.

Select month

JanDec

⚠ Runoff season — check live gauge before driving

Peak runoff continuing early month. SALMONFLIES (size 4-6) starting late month when flows allow — high-elevation timing puts the Boulder Salmonfly hatch in June. Golden Stones (size 6-8). Caddis (size 14-16).

Caddis

River Map

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USGS Gauge (click for site ID)Fishing Access / SectionScroll to zoom disabled — use map controls

About Boulder River

Small classic Montana freestone draining the Absaroka-Beartooth Wilderness south of Big Timber. Pocket water and meadow runs full of wild trout — a low-pressure alternative to the nearby Yellowstone and Stillwater.

SalmonflyGolden StoneCaddisPale Morning DunHopperBlue-Winged Olive

Regulations

Standard Montana trout regulations apply on the Boulder; cutthroat and brown trout are present in the upper reaches. Montana fishing license required. Verify current regs at fwp.mt.gov before fishing.