The lake largely ensures the drinking water supply of Timișoara and the surrounding area and protects it from flooding.

[3] Lake Surduc has been an IUCN Category IV protected area since 2000.

[6] The dam has a height of 36 m, with an opening at the crown of 130 m, the length of the lake being 4 km, the width 3 km, and the maximum depth 17.2 m.[6] It is the narrowest dam in Romania, relative to the volume of water held.

Lake Surduc supplies drinking and industrial water to Timișoara and can set in motion the turbines of a 2 MW micro-hydropower system.

Faunal elements include: aquatic invertebrates, amphibians (Bombina bombina, Hyla arborea, Salamandra salamandra), reptiles (Emys orbicularis, Natrix tessellata), fish (carp, bream, zander, wels, pike, chub, perch, rudd, goby), aquatic avifauna, especially wintering species and populations (Gavia stellata, Ardea alba, Ciconia ciconia, Tachybaptus ruficollis, Aythya ferina, Aythya fuligula, Aythya nyroca, Anas platyrhynchos, Fulica atra), birds of prey (Buteo buteo, Falco tinnunculus, Falco peregrinus, Accipiter gentilis, Circus aeruginosus, Strix uralensis, Athene noctua), as well as passage species (Coracias garrulus).