The lower reaches of the Aguapeí River flow through the Aguapeí State Park, created in 1998, which is about 10 kilometres (6.2 mi) upstream from the point where the Aguapeí the Paraná River. The park contains large areas of floodplain, and is flooded in the rainy season when the Aguapeí overflows its banks.[1] The mouth of the river is protected by the 8,885 hectares (21,960 acres) Mouth of the Aguapeí Private Natural Heritage Reserve, created in 2010.[2]