Lac de Mont Mayen is a pristine alpine trout lake nestled in the high Isère mountains of the Auvergne-Rhône-Alpes region, offering excellent fly-fishing opportunities in a dramatic mountain setting. This cold, clear water is ideal for targeting wild brown trout and Arctic char in one of France's most spectacular high-altitude fishing destinations.
Night fishing at Lac de Mont Mayen is not permitted. Night fishing prohibited. Mountain/Category 1 trout water — French law prohibits night fishing between 30 min after sunset and 30 min before sunrise. Anglers must leave the bank before dark.
Boat fishing: Boat access is restricted at Lac de Mont Mayen.
Bivouac & overnight camping is permitted at Lac de Mont Mayen under standard French fishing law — one rod, within 10m of the water, no open fires. French Cat2 public water default — bivouac permitted. Verify local rules before overnight stay.
Managed by Fédération de Pêche Isère. Always verify current rules with the AAPPMA before your session — regulations can change seasonally.
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Lac de Mont Mayen holds brown trout, arctic char, rainbow trout.
A valid Carte de Pêche is required to fish Lac de Mont Mayen — you will also need to be affiliated with Fédération de Pêche Isère. Licences are available online before your trip.
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To fish Lac de Mont Mayen, you need a valid Carte de Pêche (French fishing licence), available online at cartedepeche.fr before you leave the UK — affiliation with Fédération de Pêche Isère is included in the purchase process. Annual, weekly and daily licences are all available online.
Isère is home to numerous public fishing venues. Browse all venues in Isère or explore all of Auvergne-Rhône-Alpes.
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