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Allegheny River

The Allegheny River ( AL-ig-AY-nee; Seneca: Ohi꞉yoʼ; Unami: Alikehane) is a 325-mile-long (523 km) river that is located in western Pennsylvania and western New York in the United States. The chief tributary of the Ohio River, the Allegheny runs from its headwaters just below the center of Pennsylvania’s northern border, heads northwest into Western New York, then zigzags southwesterly back across the border to flow through Western Pennsylvania and finally join the Monongahela River at Forks of the Ohio near Downtown Pittsburgh, Pennsylvania. From Wikipedia

Length
325 mi
Basin
11,580 sq mi
Rises at
Allegheny Mountains
Flows into
Ohio River

Flow now

Allegheny River at Natrona, PA, 6 mi from the river.

6,680cfsat build, Nov 12, 11 AM MT

014,70029,400Oct 12Nov 11

The typical week here, from 10 years of record: 7,070 cfs to 29,400 cfs, around 12,200 cfs.

Also gauged at Buffalo Creek at Iron Bridge, PA: 30 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: 7,070 to 29,400 cfs. Running 6,680 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

  • International Angler PittsburghWebsite

Nearby waters

Every Pennsylvania water

Open Allegheny 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.