Find your next day on the water.For businesses: claim your free listing
Legendary Fly GearFish Like a Legend
Search

When it happens, and who says so.

Hatches, fish runs, spawning and seasons, month by month, for 10 regions. A row is charted only for the months a state agency, national park, USGS or university page gives, and every row names its source. Where we found no source with months, we chart nothing.

  • 10regions
  • 129sourced rows
Hundreds of mayflies floating on the calm surface of a wide river below a low bluff, in black and white
A mayfly hatch on the Green River at Seedskadee National Wildlife Refuge, Wyoming (Tom Koerner, U.S. Fish and Wildlife Service). Photo: Tom Koerner, U.S. Fish and Wildlife Service, public domain, via Wikimedia Commons

Regions

  • Northern Rockies

    8 rows (hatch, season or closure) from 5 sources. Montana FWP's salmonfly, caddis and Trico timing, and the season dates set by Yellowstone and Grand Teton national parks and Idaho.

  • Pacific Northwest

    10 rows (hatch, fish run, season or closure) from 6 sources. Oregon and Washington: salmonflies, and the steelhead and salmon runs the state agencies time.

  • California

    19 rows (fish run, season or closure, hatch) from 4 sources. California's salmon and steelhead runs and park seasons, from the state agency and the National Park Service. Insect hatch months come from California Fly Fisher magazine (a secondary source); we found no agency page giving them.

  • Southwest and Colorado

    8 rows (hatch, fish run, season or closure, spawning) from 6 sources. Utah, Colorado, New Mexico and Arizona: a green drake hatch, spawning runs and the closures that protect them.

  • Alaska

    8 rows (fish run) from 2 sources. Run timing on the Kenai and Russian rivers, from the Alaska Department of Fish and Game.

  • Driftless

    19 rows (season or closure, fish run, hatch) from 7 sources. Seasons and spawning in southeast Minnesota, Wisconsin and northeast Iowa. Hatch months come from Minnesota Trout Unlimited's hatch chart (a secondary source, dates centred on the northern Driftless); we found no agency or university page giving them.

  • Catskills and the Northeast

    17 rows (hatch, fish run, season or closure) from 7 sources. Pennsylvania hatches and shad and herring runs from the Fish & Boat Commission, and the New York (including the Beaver Kill) and Vermont trout seasons.

  • Southern Appalachians

    27 rows (hatch, fish run, season or closure) from 9 sources. North Carolina's mountain-stream hatch chart (published by the Wildlife Resources Commission), spawning in the Smokies and Shenandoah, and the delayed-harvest seasons.

  • Ozarks

    3 rows (season or closure) from 2 sources. Missouri's trout-park seasons and Arkansas's spawning closure below Bull Shoals Dam. We found no agency page giving hatch months for the Ozarks, so none is charted.

  • Great Lakes

    10 rows (fish run, hatch) from 7 sources. Steelhead and salmon runs in New York, Michigan and Pennsylvania tributaries of the Great Lakes, and the Hex and June hatches on Michigan trout streams from the Michigan DNR.

By species

Identification, status and where to fish for each species is on its own page: all species.