The Best of Washington Steelhead and Trout Since 1988
Best of Washington Steelhead & Trout Since 1988

YAKIMA RIVER HATCH CHART

Common Name Latin Name Order J F M A M J J A S O N D
Midges . .
Blue Wing Olive (BWO) Baetis Mayfly #16-22
Little Brown Stone
Winter Stone
Capniidae Stonefly #16-18
Spring Stone, Skwala Skwala Americana Stonefly #10-12
Ameletus Mayfly #16-18
March Brown Rhithrogena Mayfly #10-12
Small Salmon . .
Aluvin . .
Fry . .
Smolt . .
Caddis . .
American Grannom,
Mother’s Day
Brachycentrus Caddis #12-14
Rock Worm Rhyacophilia Caddis #14
Little short winged Sedge Hydropsyche Caddis #16-18
Microcaddis Hydroptilidae Caddis #20-24
Turtle Casemaker Glossosoma Caddis #16
October Caddis,
Fall Caddis
Limnephilidae
Common Name Latin Name Order J F M A M J J A S O N D
Terrestrials . .
Ants . .
Beetles . .
Bees . .
Hoppers . .
Salmon fly Pteronarcys californica Stonefly #4-6
Green Drake Drunella doddsi, D. grandis Mayfly #8-10
Brown Drake Ephemera simulans Mayfly #10
Pale Morning Dun (PMD) Ephemerella excrucians,
Ephemerella dorothea
infrequens
Mayfly #16
Pale Evening Dun Heptagenia solitaria Mayfly #16
Large Yellow May . Mayfly #10-12
Golden Stone Hesperoperla pacifica,
Calineuria californica
Stonefly #6-8
Yellow Sally Isoperla petersoni Stonefly #16
Little Yellow May,
Summer/Fall Cahill
Epeorus Mayfly #14-16
Summer Stone Claassenia sabulosa Stonefly #6
Craneflies Tipulidae Craneflies #8-12
Mahogany Dun Paraleptophlebia Mayfly #16-18