NorCalSierraOutdoor ReportMatch the hatch
4 hatches active this month
Small olive-gray mayfly, upright gray wings
When: Midday, overcast days
Flies: Parachute BWO, Pheasant Tail, RS2
Color palette
Wing profile
Small smoky-gray upright wings; 2 tails.
Tiny black/white mayfly
When: Early morning spinner fall
Flies: Trico Spinner, Griffith's Gnat
Color palette
Wing profile
Tiny clear wings; spinners lie spent in the film.
Big orange caddis
When: Late afternoon
Flies: Orange Stimulator, October Caddis pupa
Color palette
Wing profile
Big mottled tent wings over an orange body.
Tiny two-winged gnat
When: All day, esp. winter
Flies: Zebra Midge, Griffith's Gnat
Color palette
Wing profile
Two clear wings, no tails — tiny.
Dark olive-brown stone, flat wings
When: Afternoon
Flies: Skwala dry, Rubber-leg Stone
Color palette
Wing profile
Dark veined wings lie flat; 2 short tails.
Mottled tan/brown mayfly
When: Early afternoon
Flies: March Brown dry, Hare's Ear
Color palette
Wing profile
Heavily mottled tan wings with dark bars.
Huge orange-bellied stonefly
When: Afternoon
Flies: Chubby Chernobyl, Pat's Rubber Legs
Color palette
Wing profile
Huge (2"+) smoky wings, orange collar.
Pale yellow body, light gray wings
When: Late morning
Flies: PMD Comparadun, Sparkle Dun
Color palette
Wing profile
Pale gray wings, sulfur-yellow body.
Golden-yellow stone
When: Evening
Flies: Stimulator, Golden Stone nymph
Color palette
Wing profile
Translucent amber wings over a golden body.
Tent-winged tan moth-like fly
When: Evening
Flies: Elk Hair Caddis, Soft hackle, LaFontaine Pupa
Color palette
Wing profile
Mottled tan wings folded like a tent; long antennae.
Small bright yellow stone
When: Evening
Flies: Yellow Sally, Stimulator
Color palette
Wing profile
Small pale wings flat over a bright yellow body.