Chalk‑stream dawn: Test below Stockbridge
River Test below Stockbridge — first hour dry‑fly window for brown trout
At first light the Test below Stockbridge often shows a tight, technical hatch: the first hour of dawn through the early rise is when brown trout move onto seams to take emergent caddis and small olives.
Late summer on this chalk stream favours large numbers of caddis, so anglers carry sedge patterns alongside olive and mayfly imitations; sizes commonly land in the 16/14 range for sedges and 18/16 for olives, with some flies dropping to size 18 as the hatch thins.
Presentation is upstream and delicate. A 12–15 ft leader finishing on about 2 lb tippet gives the reach and light touch needed on clear water; lengthening the leader a few feet is the usual fix when trout refuse at the surface.
Look for the seams where a steady glide meets a slightly faster tongue: soft edges of faster water, foam lines, flow past weed or an undercut bank. The first soft crease off the main flow is prime at dawn, and beats around Houghton Lodge and the Stockbridge reaches often produce the earliest activity.
Expect a chalk‑stream rise rather than a blanket: intermittent pulses of emergent caddis, neat rises over gravel, and trout quartering the seams with surgical takes. At the very first light a pale sedge lifts and a brown trout breaks the surface, a flash against pebbled shallows.
Morning forecast
Stable low flows favour dry‑fly windows through late summer; warm, calm dawns bring longer caddis activity. On breezy mornings drift and focus on sheltered seams and undercut banks where trout feel secure.
Recommended: tapered fly leader