Pantà de Darnius, dam in Darnius, Catalonia

Pantà de Darnius is a reservoir on the Muga river, held back by a 63 m high and 250 m wide concrete dam in the municipality of Darnius. Its water surface covers 363 ha at full capacity and holds 60 hm³, reaching the terms of Sant Llorenç de la Muga, Terrades and Maçanet de Cabrenys. The dam was inaugurated in 1969 and also receives water from the Arnera river.

The dam was inaugurated in 1969 on the Muga river, with a height of 63 m and a crest width of 250 m. It was first planned at Boadella d'Empordà, but the site was moved upstream before works began, and the name Boadella stuck. The official name changed to Darnius Boadella in 2014, confirmed in 2015. Under its waters lie the remains of the Reial Foneria de Sant Sebastià de la Muga.

Sailing, rowing and motor boating under 16 knots are permitted on the water; water skiing and fishing are also practised. The dam stands in Darnius municipality, while the water reaches Sant Llorenç de la Muga, Terrades and Maçanet de Cabrenys. The Arnera river also feeds the reservoir.