Administrative territory – Jurmala
Status "de jure" – national park
Area of water surface – 10.3 hectare
Mean depth – 1.4 metre(s)
Maximum depth – 2.0 metre(s)
Translation of the name "Melnezers" means Black Lake. The surrounding Raganu Bog (Whiches' Bog) influences the water qualities of the lake. Humic substances coming from the bog give the water its dark brown colour. Swimming in the lake is not advised.