Rio das Lontras Private Natural Heritage Reserve

The Rio das Lontras Private Natural Heritage Reserve () is a private natural heritage reserve in the state of Santa Catarina, Brazil.
Location.
The Rio das Lontras Private Natural Heritage Reserve was created by decree on 3 April 2005, modified on 14 May 2009.
The decree creating the reserve, which had not yet been surveyed, said it had .
After a survey, the modified decree of May 2009 gave its area as .
It includes land in the municipalities of São Pedro de Alcântara and Águas Mornas in the state of Santa Catarina.
The average elevation is above sea level.
Re reserve's streams supply the Forquilhas River, a tributary of the Cubatão River.
Average temperatures range from with an average of .
Annual rainfall is with no dry period but more rain in January and February.
Environment.
The reserve covers a fragment of the Atlantic Forest biome.
It has rugged terrain with very well preserved dense montane rainforest and has a rich variety of trees, orchids, ferns and other flora. 
Fauna include anteaters, raccoons, coatis, armadillos, skunks, opossum, hedgehogs, squirrels, howler monkeys, ocelots, pumas and otters. Birds include weavers, toucans, woodpeckers, tanagers, jays, thrushes, ibises and hummingbirds.
Conservation.
The objectives are to preserve the environment and enable scientific research and environmental education.
The proprietors make a small income from sale of T-shirts.
The reserve is close to the Serra do Tabuleiro State Park to the south, which has more than of protected land, and is part of the mosaic of ecosystems and ecological corridors of great importance for maintenance of biological diversity.