How do I fly fish small streams?

Why are small streams different?

Everything compresses. The casts are shorter, the fish are smaller, the cover is tighter, and the margin for a clumsy approach disappears entirely.

On a big river you can make mistakes forty feet away and the fish never knows. On a creek you are often standing within a rod length of the pool you are fishing, in shallow water, with nothing between you and the trout. Approach becomes the primary skill and casting becomes secondary — which is the reverse of how most people are taught.

How should you approach the water?

1. Fish upstream

   Trout hold facing into the current. Working upstream puts you permanently behind them, in their blind spot.

2. Stay low

   Crouch, kneel, use the bank. A silhouette against the sky is the single most common reason a pool goes dead before you cast.

3. Move slowly, and stop often

   Fish react to sudden movement far more than to sound. Slow is quiet.

4. Stay out of the water

   Wade only when you must. A bow wave travels upstream ahead of you and empties the next pool.

5. Fish the near water first

   Cast to the closest holding water before you cover the far bank, or you drag line over fish you had not noticed.

What gear changes?

The leader is the change people skip and then struggle with. A nine-foot leader will not straighten on a fifteen-foot cast, so the fly lands in a heap. Shorten it. The general leader logic is in leader vs tippet, and the rod-weight reasoning is in what weight fly rod for trout.

Where do the fish actually hold?

Small streams have the same features as big rivers, at one tenth the scale. A pocket the size of a dinner plate is genuine holding water.

The general principles are the same as anywhere — how to read water covers them — but on a creek you are reading features measured in feet rather than yards.

How do you cast in tight cover?

Overhead casting is often impossible. Three alternatives cover almost everything:

• Roll cast. No backcast at all. The default when there is brush behind you, which on a small stream is most of the time.
• Bow-and-arrow cast. Hold the fly by the hook bend, load the rod tip, and release. Delivers a fly ten to fifteen feet into a pocket you could not otherwise reach.
• Sidearm cast. Keeps the loop under branches. Also lands the line lower and softer, which matters at close range.

What should you tie on?

A buoyant, visible attractor dry, and stay with it. Small-stream trout are rarely selective, and a fly you can actually see in dappled light through overhanging trees is worth more than a more accurate one you cannot follow.

• A Royal Wulff is the classic small-stream attractor — white wings you can track, and it floats through pocket water.
• A Humpy floats like a cork in the broken water below a plunge, where most creek fish live.
• A Beetle is the quiet option for a hot afternoon under overhanging trees, when a high-riding attractor gets refused.
• An Elk Hair Caddis covers the actual hatch when there is one, and doubles as a dry-dropper anchor.

If a fish refuses twice, move on. There is another pool ten yards upstream and it has not seen you yet.