The Muga is a river in Catalonia which rises in the Alberes mountains of the eastern Pyrenees and enters the sea at the Gulf of Roses.
The river is 58 km long with its source below the summit of Montnegre (1,186m). The river passes through the village of Pont de Molins and passes through the Pantà de Boadella, where the river is dammed.
The Muga Valley was entrusted to the County of Empúries by Ramon Berenguer III after being in the County of Besalú. The local population suffered in both the Peninsular War and Spanish Civil War.