Montana · river

Yellowstone River

The Yellowstone River is a tributary of the Missouri River, approximately 671 miles (1,080 km) long, in the Western United States. Considered the principal tributary of the upper Missouri, via its own tributaries it drains an area with headwaters across the mountains and high plains of southern Montana and northern Wyoming, and stretching east from the Rocky Mountains in the vicinity of Yellowstone National Park. From Wikipedia

Length
692 mi
Basin
70,000 sq mi
Flows into
Missouri River

Flow now

Yellowstone River at Miles City, MT, 2 mi from the river.

5,280cfsat build, Nov 12, 11 AM MT

04,6909,380Oct 12Nov 11

The typical week here, from 10 years of record: 6,150 cfs to 9,380 cfs, around 7,730 cfs.

Also gauged at Tongue River at Miles City, MT: 118 cfs, Nov 12.

The season, November

Usually workable this week. Pick your window and fish it well.

  • Midgessizes 18 to 22
  • Small eggs and worms
  • Pheasant tail and zebra midge nymphsunder an indicator

Typical for the week over 10 years: 6,150 to 9,380 cfs. Running 5,280 cfs today, inside that range. Flows are not forecast; check the gauge the day before.

Brown Trout are spawning (October to December). Stay off clean, light-coloured gravel in riffle tails and pool tailouts, and leave paired fish alone.

Brook Trout are spawning (September to November). Stay off clean, light-coloured gravel in riffle tails and pool tailouts, and leave paired fish alone.

Mountain Whitefish are spawning (October to December). The egg bite behind spawning whitefish is the best winter nymphing of the year: an egg pattern below the riffles.

  • Egg patterns in the runs below the spawning gravel, never on it.

Written by the app's rules engine from the calendar, the gauge record and the snowpack, not by hand, so it says only what the data says. The weather for the week comes with the app.

Fly shops on this water

Open Yellowstone River in FlyMaster for today's plan, the flies, and your own log here.

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Flows from the U.S. Geological Survey, snowpack from the NRCS SNOTEL network, text from Wikipedia (CC BY-SA 4.0). Built Nov 12.