The Andelle emerges from Normandy chalk moving with the precision of water that knows exactly where it came from. Classic chalk-stream character — clear, stable temperature, rich fly life. Wild brown trout and grayling. Selective fishing required: small, precise presentations to individual rising fish during mayfly, olive, and sedge hatches (April–June). Some beats private; check access before visiting.
In chalk-spring and karst trout systems, generally stable temperatures broaden olive and other mayfly activity from early spring into autumn, with strong evening caddis, steady subsurface scuds and buzzers where clear groundwater and weedbeds develop, and terrestrials from meadow and woodland banks rounding out the food calendar, depending on how fast each river drops and clears after rain.
- Chalk
