Bacia do Rio Macacu Environmental Protection Area

Bacia do Rio Macacu Environmental Protection Area
Área de Proteção Ambiental da Bacia do Rio Macacu
IUCN category V (protected landscape/seascape)
Rio Macacu at Valério
Nearest city	Cachoeiras de Macacu, Rio de Janeiro
Coordinates	22°30′04″S 42°45′01″W / 22.501050°S 42.750382°W / -22.501050; -42.750382Coordinates: 22°30′04″S 42°45′01″W / 22.501050°S 42.750382°W / -22.501050; -42.750382
Area	19,508 hectares (48,210 acres)
Designation	Environmental protection area
Created	5 December 2002

The Bacia do Rio Macacu Environmental Protection Area (Portuguese: Área de Proteção Ambiental da Bacia do Rio Macacu) is an environmental protection area in the state of Rio de Janeiro, Brazil.

The Bacia do Rio Macacu Environmental Protection Area (APA) covers parts of the municipalities of Cachoeiras de Macacu, Itaboraí and Guapimirim in Rio de Janeiro. It has an area of 19,508 hectares (48,210 acres). It includes areas of plains and lowlands and mountainous areas with springs and important remnants of forest. Its largest area is occupied by pastures, vegetable fields and quarries for sand to be used in construction.

The Guapimirim-Macacu sub-basin is part of the Guanabara Bay basin. It is bounded to the north and northwest by the Serra dos Órgãos, to the northeast by the Serra de Macaé de Cima, to the east by the Serra da Botija and the Serra de Monte Azul, and to the south by the Serra do Sambê and the Serra dos Garcias. The Macacu River, the main river of the APA, is born in the Serra dos Órgãos at about 1,700 metres (5,600 ft) in the municipality of Cachoeiras de Macacu, and runs for about 74 kilometres (46 mi) to its junction with the Guapimirim River.

Protected areas near the APA include the Serra dos Órgãos National Park with 11,800 hectares (29,000 acres), Três Picos State Park with 46,350 hectares (114,500 acres), Paraíso Ecological Station with 4,920 hectares (12,200 acres), Guapimirim Environmental Protection Area with 14,000 hectares (35,000 acres) and Petrópolis Environmental Protection Area with 59,049 hectares (145,910 acres). Most of these were created to protect springs and headwaters in the forested mountains as well as biodiversity.