With so many effective patterns available, narrowing down a list of "must-have" trout flies for a BC river to 11 is extremely difficult (it actually started as 10 but just had to get one more in).

In this list, we highlighted those that we feel you simply cannot go to a river without, and a few of the honourable mentions. Whether you're on the Similkameen, Skagit, Fraser, Chilliwack/Vedder, Adams, Elk, Squamish, or Thompson, these flies catch fish. Although the time of year has a massive influence on what to swing, we've compiled a list that should broadly cover the essentials.

In no particular order:

• Wooly Bugger
• Copper John
• Adams
• Elk Hair Caddis
• Pheasant Tail Nymph
• Egg Pattern
• Hares Ear Nymph
• Egg Sucking Leech
• California Blonde
• Stonefly Nymph

Wooly Bugger

If the list was down to only 1 fly this would be it. This incredibly versatile fly, looks like nothing, but represents everything. They can be a leech, a minnow, or a stonefly nymph. Better yet, they can just be downright annoying, and for a fish, annoying can be the best lure. If restricted down to colour, olive would be it, but black would not be a bad option either. The colour options are endless too, so don't hold back - white, brown, burgundy, pink, chartreuse, black, and olive to name a few.

Copper John

A wonderfully versatile fly, no fly box should be without them. Although copper is the standard body colour, they are also available in chartreuse, blank, amber, brown, and red to name a few.

Adams

You'll want to stock up on these bad boys in sizes 18 to 10. When fish are slurping their food from the surface, having roughly the right size is critical. When they are being super picky, having the exact size is a must.

Elk Hair Caddis

Probably the #1 go-to dry fly caddis pattern. Available as small as a size 20, or as big as a size 4, having a selection of colours and sizes is essential.

Rolled Muddler Minnow

Cutthroat love a muddler, rainbows love a muddler, steelhead love a muddler, char love a muddler, coho love a muddler... heck, pretty much every species of fish in a BC river is a sucker (including suckers) for a swung or stripped muddler minnow.

Egg Patterns

This one comes with or without a bead, in many colour variations, and a wide range of sizes. Typically fished during a spawning cycle (although trout seem to not really care), the general idea is to match the eggs from the species of spawning salmon or steelhead.

Hairs Ear Nymph

Imitating a mayfly nymph, the hairs ear is a must. As with most patterns, a variety of sizes and colour options (natural and olive are the two most common) is always a good thing.

Pheasant Tail Nymph

Most BC rivers host mayflies, and the classic PTN is a must. Like all flies there are a number of variations on the theme. You'll usually only need a couple of sizes though, something small, and something in the size 10 - 12.

Stonefly Nymph

Again size (12 - 2) and colour (golden or black) matters here so go prepared. If you're on the Thompson and the fish are all over mature golden stones, then a big golden stonefly it is!

Egg Sucking Leech

A variation on the wooly bugger, egg sucking leeches are a fabulous option. Black or purple body with an orange or pink head in a couple of sizes are worth stocking up on (the chartreuse head version can also be effective).

California Blonde

A super-versatile dry fly pattern, the CB always lands right-side up, mimicking a stonefly, salmonfly, caddis, or even a hopper. Having them in a good selection of sizes (#14 - #2) is essential, as fish can be picky, especially during a hatch.

Honorable Mentions

Although these would be our must-haves, here are some flies that are also worth having with you:

Be sure to leave a comment with any other must-have flies you keep in your river box.