What to Expect in Oregon in June

Importance by half-month
 Super    Major    Minor    Slight    None

Hatches are matched from Westfly's database of "standard" fly patterns.


Nymph

Size 16-18 Pheasant Tail, Hares Ear. Olive-brown

Riffles, flats, moderate runs: indicator, tight line, rising nymph, shallow nymph

Emerger

Size 16-18 Sprout Midge, Film Critic, Hackle Stacker. Pale yellow, light brown, or tan body; light wing

Flats, moderate runs, backeddies: standard dry fly

Dun

Size 16-18 Sparkle Dun, Hairwing Dun, Comparadun. Pale yellow, light brown, or tan body; light wing

Flats, moderate runs, backeddies: standard dry fly

Spinner

Size 16-18 Rusty Spinner. Light brownbbody; light wing

Flats, moderate runs, backeddies: standard dry fly

► These delightful little mayflies are a major summer hatch on most rivers. Trout can get very selective on them, but they are not difficult to match with a size 18 pattern, such as a Sparkle Dun. However, anglers are more likely to imitate the wrong stage: trout will switch from nymphs to emergers to duns, lingering longer on each stage than most anglers expect.

Emerger

Size 10-14 Soft Hackle. Yellow body and wing; gray-brown body

Riffles, below riffles: surface swing

► Nymphs live in riffles, so duns (and trout) are usually found just downstream from there.

► The dun generally emerges underwater, then floats to the surface, where it dries its wings. In our area, trout usually take them while they're still underwater. So a good fly choice is a yellow-bodied Soft Hackle in size 12 or 14.

Yellow quills (Epeorus mayflies) are often mistaken for either pale morning duns or pale evening duns. The yellow quills are about size 12-14 and have a yellow wing, not tan or smoky gray.

Emerger

Size 12-14 Soft Hackle, Film Critic, Hackle Stacker. Olive-brown, brown

Bankwater: surface swing

Dun

Size 12-14 Hairwing Dun, Comparadun, Sparkle Dun. Cream

Bankwater: standard dry fly

► This mayfly is usually found hatching near riffly water. Try a size 12-14 Light Cahill or yellow-bodied Sparkle Dun or a local pattern that has an extended body.

► These light colored mayflies are size 12-14 and are often mistaken by anglers for a pale morning dun. But PEDs are more intense in color than PMDs, the wings are tan, and the insect is larger.

► I've seen trout ignore big adult salmonflies in favor of hatching pale evening duns, so be prepared.

► Imitate with a size 12-14 Light Cahill, or yellow-bodied Sparkle Dun, or a local pattern that has an extended body.

► These light colored mayflies are size 12-14 are often mistaken by anglers for a pale morning dun, but PEDs are more intense in color than PMDs, the wings are tan, and the insect is larger. They usually hatch near riffly water.

Pupa

Size 12-16 Soft Hackle, Deep Sparkle Pupa, . Body: green; Shroud: tan

Riffles, moderate-fast runs; just below these: surface swing, shallow nymph

Adult

Size 12-16 Goddard Caddis, X Caddis, Parachute Caddis, Elk Hair Caddis. Body: green, dark brown; Wing: brown, black

Egg-layer

Size 12-16 Diving Caddis, Soft Hackle. Body: brown; Wing: black

Riffles, current seams, backeddies below riffles: surface swing, shallow nymph, rising nymph

► Grannoms (genus Brachycentrus)--aka the "Mother's Day Caddis"--are important on some Oregon rivers. Use a size 14 Sparkle Pupa or Deep Sparkle Pupa with a green body and a tan shroud before and during the hatch. Dead drift it near the bottom, then let it swing up to the surface. If you see trout feeding consistently just subsurface or making splashy rises, cast a Sparkle Pupa upstream-and-across and let it drift drag-free just under the surface.

Pupa

Size 12-18 Soft Hackle, , Deep Sparkle Pupa. Body: tan, green; Shroud: tan

Riffles, runs, just below riffles: surface swing, shallow nymph

Adult

Size 12-18 Goddard Caddis, X Caddis, Parachute Caddis, Elk Hair Caddis. Body: brown, green, dark gray; Wing: tan, brown

Egg-layer

Size 12-18 Diving Caddis, Soft Hackle. Body: brown; Wing: black

Riffles, current seams, backeddies below riffles: surface swing, shallow nymph, rising nymph

► Several varieties of caddis are around this month. Carry imitations in size 14 (olive), size 14 (tan), size 16 (dark brown or gray). Watch for afternoon and evening activity.

Adult

Bankwater near foilage: standard dry fly, skating

► The hatch continues into June. On some rivers it will be over by mid month, but on others it may just be getting started.

► Cast your dry fly near shore and just downstream or downwind from overhanging vegetation--especially in the afternoon when the bugs and the wind are at their most active. Another good spot is near rocks and places that concentrate the current.

Adult

Size 12 Clarks Stonefly, Stimulator, Chubby Chernobyl. Yellow, brown, yellow-brown

Bankwater near foilage: standard dry fly

Adult

Bankwater near foilage: standard dry fly

► The hatch continues into June. On some rivers it will be over by mid month, but on others it may just be getting started.

► Cast your dry fly near shore and just downstream or downwind from overhanging vegetation--especially in the afternoon when the bugs and the wind are at their most active. Another good spot is near rocks and places that concentrate the current.

Pupa

Size 10-22 Chans Chironomid Pupa, Zebra Midge. Black, gray, olive, red, creams, browns

Adult

Size 10-22 Griffiths Gnat, Sprout Midge. Black, gray, olive, red, creams, browns

► Midges are less important this month than earlier in the season, but it's still good to be prepared in case of a hatch that sparks the attention of the fish.

Trout


Green drakes are not abundant on most Oregon streams, but when they're around they will catch the interest of trout. Early in the hatch season, trout gobble the nymphs. Even after the duns are hatching, trout will stick with the nymphs for a few more days before turning their interest to the duns.

► If a river is slightly colored from snow melt or rain, you'll probably do best with nymphs, and those nymphs will usually work best when drifted near the bank. If the river is high and into the grassy banks, you may pick up trout on nymphs there as well.

Steelhead


► Steelhead are starting to move into coastal streams that support summer-run fish, such as the Wilson and Siletz. It's still too early to find many fish farther inland, such as in the Deschutes and North Umpqua, although the Hood River gets an early run of summer steelhead. Use standard summer steelhead swinging flies and traditional tactics wherever you happen to go.

General


► Melting snow can raise rivers and keep them cool, so watch the river level gages carefully. If you see a sudden large increase, you can figure fishing is going to be poor on that river until the flows stabilize or drop significantly.

Importance by half-month
 Super    Major    Minor    Slight    None

Hatches are matched from Westfly's database of "standard" fly patterns.


Nymph

Size 14-16 Pheasant Tail. Brown

Emerger

Size 14-16 Quigley Cripple, Film Critic, Hackle Stacker. Gray to tan

Lakes, slow water: chuck-and-sit

Dun

Size 14-16 Sparkle Dun, Hairwing Dun, Adams, Comparadun. Gray to tan

Lakes, slow water: chuck-and-sit

Spinner

Size 14-16 Rusty Spinner. Tan to brown

Lakes, slow water: chuck-and-sit

► During a hatch, use a Callibaetis Cripple, Sparkle Dun, or similar fly with a chuck-and-sit presentation.

► Trout will feed on nymphs for a couple of hours before the hatch. Take advantage of this and cast a nymph pattern, then retrieve it slooooooowly; use an intermediate line with a long leader. A Flashback Pheasant Tail, size 14-16, should work quite well. In my experience, a Flashback PT outfishes a regular PT by 3-to-1 during this hatch. The reason is that many nymphs develop a shiny back just before they hatch, and trout look for this feature.

► Expect late-morning to mid-afternoon hatches on most lakes.

Pupa

Size 8-16 Soft Hackle, . Body: black, brown, white; Shroud: tan

Lakes; backwaters and slow sections of rivers: verticle retrieve, slow retrieve

Adult

Size 10-16 Elk Hair Caddis, Parachute Caddis, X Caddis. Body: black, brown, white, cream

Lakes; backwaters and slow sections of rivers: chuck-and-sit

Pupa

Size 6-10 , Deep Sparkle Pupa, Soft Hackle. Body: Ginger, brown

Lakes; backwaters and slow sections of rivers: slow retrieve, verticle retrieve

Adult

Size 4-10 Parachute Caddis, X Caddis, Elk Hair Caddis. Ginger, brown

Lakes; backwaters and slow sections of rivers: chuck-and-sit

Nymph

Size 8-12 Marabou Damsel. Olive, yellow-olive, browns, greens

Lakes near submerged vegetation: count-down-and-retrieve, slow retrieve, wind drift

► Nymphs should become effective as the water warms up. Imitations work best near weedbeds.

► The standard damselfly retrieve is to pull two inches of line in two seconds, pause two seconds, then repeat. Use an intermediate line; damselfly nymphs move in the top inch or so of water. That said, you can do pretty well just trolling a damsel nymph as you slowly and steadily kick around the lake in your float tube or 'toon.

Pupa

Size 10-22 Chans Chironomid Pupa, Zebra Midge. Black, gray, olive, red, creams, browns

Adult

Size 10-22 Griffiths Gnat, Sprout Midge. Black, gray, olive, red, creams, browns

► An adult midge pattern, such as a Griffiths Gnat, can work well, especially in higher elevation lakes.

► You might see hatches of different species throughout the day and evening. Each may require a slightly different fly.

► During a midge hatch, the static midge tactic usually works well. If the hatch is during the bright part of the day, however, you might do better with the deep midge tactic because trout can be reluctant to come to the surface.

Adult

Size 2-10 Woolly Bugger, Bunny Leech, Hale Bopp Leech, Possie Bugger. Black, browns, olives

Lakes; backwaters and slow sections of rivers: count-down-and-retrieve, slow retrieve, wind drift

► It's hard to go too far wrong with a leech pattern or a Woolly Bugger on a clear intermediate line.

► When fishing leech imitations or other streamers in the spring, "low and slow" are the watchwords. The colder the water, the slower you should present the fly. Keep your fly near the bottom (in water that is less than eight or ten feet deep) and retrieve it very slowly.

Adult

Size 2-8 Muddler, Woolly Bugger, Clouser Minnow, Possie Bugger. Browns, olives, silver, greens

Lakes; rivers over gravel and cobble, undercut banks: count-down-and-retrieve, slow retrieve, wind drift, deep swing