Itchen Morning Briefing
River Itchen rises from chalk springs above Alresford and opens a narrow dawn caddis window through the Winchester–Alresford corridor.
Brown trout and occasional grayling are keyed to surface insects today. Low, gin-clear flows have pushed fish into inside seams, tailouts and the edges of weed-beds where caddis and small upwings drift into holding lanes.
Expect caddis at first light, then a trickle of mayflies—pale watery, blue‑winged olive and iron blue—through mid‑morning. Fish will sip tight on gravel runs; the best dry‑fly work happens on calm tails and current seams where a subtle drift beats brute presentation.
Patterns, tackle and presentation
Keep a small box: tan or olive caddis imitations, upwing mayflies in sizes 16–20 and BWO-style dries in pale shades. Use 5X or 6X tippet and favour a 12 ft leader for soft turn-over in the clean chalk water. A light rod with delicate casting and minimal false casting wins more takes than heavy reach casts.
Wading notes: stay low, move slowly and pick the inside edges of weed, undercut banks and reed margins. On low gravel runs short, deliberate steps and a low profile prevent spooking. Today a trout may rise in a shallow seam just as dawn breaks over Alresford, taking a pale caddis off the glassy surface.