Montana · river
Dearborn River
The Dearborn River is a tributary of the Missouri River, approximately 70 mi (113 km) long, in central Montana in the United States. It rises in the Lewis and Clark National Forest, near Scapegoat Mountain in the Lewis and Clark Range of the Rocky Mountains at the continental divide, in western Lewis and Clark County. From Wikipedia
- Length
- 70 mi
- Basin
- 425 sq mi
- Flows into
- Missouri River
Flow now
Dearborn River near Craig MT, 11 mi from the river.
75cfsat build, Nov 12, 11 AM MT
The typical week here, from 10 years of record: 40 cfs to 82 cfs, around 65 cfs.
Also gauged at Sun River bl Willow Cr nr Augusta MT: 148 cfs, Nov 12.
Snowpack
0.1 in of water in the snow at Copper Bottom and 2 more stations, against a median 0.6 in for the date (11 % of normal).
The snowpack here usually builds from Nov 12, peaks Mar 22 and is gone by Apr 27; runoff follows the melt.
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: 40 to 82 cfs. Running 75 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.
- Flows swing a lot this week most years. Carry both a heavy nymph rig and a dry-dropper and let the gauge decide.
- 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
- Headhunters Fly Shop CraigWebsite
Nearby waters
- Blackfoot River43 mi
Open Dearborn River in FlyMaster for today's plan, the flies, and your own log here.
Flows from the U.S. Geological Survey, snowpack from the NRCS SNOTEL network, text from Wikipedia (CC BY-SA 4.0). Built Nov 12.
