Lake Ira Lalaro (also Iralalaro, Ira-Lalaro, Surubec, Suro Bec) is a
waterway in Mehara, Subdistrict
Tutuala,
Lautém District of
East Timor. It is the largest freshwater lake on the island of
Timor, and the largest lake in the country of East Timor. The lake is part of the
Mount Paitchau Important Bird Area. The lake waters and that of Irasiquero River are a closed aquatic system; they lie within a huge
polje. The surface water area fluctuations from while the
authigenic catchment area measures .