Great question. After a rain, inflow streams light up with new current, warmer oxygen-rich water, and rainbows often key in on seams where fast water meets slower pockets. Here’s how to target them effectively with drift rigs:
-
Where to fish
- Confluences and inflow mouths: look for calm pockets just downstream of the bend where the incoming water pools and sweeps food into the main flow.
- Seams and edges: fish tend to hold along the slow side of a seam, behind boulders, undercut banks, and along any slack water just off the main current.
- Tailouts and behind structure: downstream of riffles, near large rocks, or where wood piles slow the drift.
- Depth changes: in stained water, fish hug slightly deeper slots where the current carries prey past them.
- Timing: the bite can appear quickly after the rain tapers, especially if the water clears a bit and temperatures stay comfortable. Be ready to adjust depth as the water clears.
-
Rig setup (drift rigs under a strike indicator)
- Leader/tippet: 9–12 ft leader with 4–6 lb test tippet for nimble presentations; switch to lighter tippet (5–6X) for clear water and picky fish.
- Weights: 1–2 split shots or a small weighted bead to put the fly in the strike zone quickly without blasting your drift.
- Point fly: a healthy nymph like Prince Nymph, Hare’s Ear, or Pheasant Tail (size 12–16 depending on stream).
- Dropper: 1 lighter nymph or midge pattern 18–24 inches behind the point (Zebra Midge, Bead Head Woolly Bugger, or a small Ottawa Wasp work well).
- Indicator: a small, bright strike indicator helps you detect subtle takes in stained water.
-
Fly color and patterns for stained water
- Bright or high-contrast colors shine in murky water: chartreuse, orange, pink, or bright bead heads.
- Use a mix of nymphs that ride in the zone: a heavier bead-head on top for depth, a lighter midge for a secondary dropper.
-
How to fish the drift
- Make long, downstream drifts across seams; mend upstream to maintain a natural drift and avoid dragging along the bottom.
- Watch the indicator closely; many rainbows strike subtly as they sip food from the surface film or take prey in the drift.
- If you’re not getting hits, vary depth by adding/removing split shot and adjust the dropper’s length to keep the droppers in the strike zone.
-
Presentation tips
- Start upstream, cast across the seam, and drift your flies through the slow water just downstream of the fast current.
- Keep your rod tip high and use gentle mends to maintain a true dead-drift; let the nymphs swing naturally with the current when possible.
- Be patient: rainbows often commit on the second or third pass through a productive seam.
-
Gear notes
- In inflow streams after rain, water clarity can vary. Be ready to switch flies and adjust weights quickly, and consider a small, light landing net to minimize stress on fish.
If you nail a run, you’ll learn a lot by watching where the fish hold and how your drift interacts with the current. Tight lines and happy drifting—the rainbow patience pays off after a rain. 🎣
