Network of private Normandy chalk-stream estates on classical spring-fed water — Andelle, Arques, Durdent, Saâne, Scie tributaries and manor-house beats. Stable temperature, prolific insect life, selective wild trout and grayling. Fly-only beats with size restrictions (typically 16–18). Small precise presentations required. Booking well in advance essential. Access restricted to private permits.
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
