New Hampshire · river

Souhegan River

The Souhegan River is a tributary of the Merrimack River in the northeastern United States. It is 33.8 miles (54.4 km) long, with a drainage area of 171 sq mi (440 km2), and flows north and east through southern New Hampshire to the Merrimack River. From Wikipedia

Flow now

Souhegan River (Site Wlr-1) Near Milford, NH, 4 mi from the river.

89cfsat build, Nov 12, 11 AM MT

0102203Oct 12Nov 11

The typical week here, from 10 years of record: 48 cfs to 196 cfs, around 87 cfs.

Water temperature at the gauge: 46°F.

Also gauged at Souhegan River At Merrimack, NH: 124 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: 48 to 196 cfs. Running 89 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

  • Stone River Outfitters AmherstWebsite

Nearby waters

Every New Hampshire water

Open Souhegan 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.