The most important touristic site near the town is the artificial lake of Serra da Mesa. It was created with the construction of the Serra da Mesa Dam, in Minaçu, at the end of the nineties. It is formed by the joining of the Maranhão, Tocantinzinho and Bagagem rivers.
Serra da Mesa has one of the largest concentrations of fresh water in the country, with a surface of 1,784 km². With 57% of its area in the municipality of Niquelândia, it has reached a width of 22 km. in the rainy season.