The Ogooué, also known as the Nazareth River, some 1,200 kilometres (750 mi) long, is the principal river of Gabon in west-central Africa and the fifth largest river in Africa by volume of discharge, trailing only the Congo, Kasai, Niger and Zambezi. Its watershed drains nearly the entire country of Gabon, with some tributaries reaching into the Republic of the Congo, Cameroon, and Equatorial Guinea.
The Fly River is the third longest river in the island of New Guinea, after the Sepik River and Mamberamo River, with a total length of 1,060 km (660 mi). It is the largest by volume of discharge in Oceania, the largest in the world without a single dam in its catchment, and overall the 20th-largest primary river in the world by discharge volume. It is located in the southwest of Papua New Guinea and in the South Papua province of Indonesia. It rises in the Victor Emanuel Range arm of the Star Mountains, and crosses the south-western lowlands before flowing into the Gulf of Papua in a large delta. The Fly-Strickland River system has a total length of 1,220 km (760 mi), making it the longest river system of an island in the world. The 824 km (512 mi) Strickland River is the longest and largest tributary of Fly River, making it the farthest distance source of the Fly River.
The Ramu River is a major river in northern Papua New Guinea. The headwaters of the river are formed in the Kratke Range from where it then travels about 640 km (398 mi) northwest to the Bismarck Sea.
The Purari is a river that originates in the south central highlands especially in Kandep District of Enga Province of Papua New Guinea, flowing 630 kilometres (391 mi) though Gulf Province to the Gulf of Papua. The Purari has a 33,670 km2 (13,000 sq mi) drainage basin and is the third largest river in Papua New Guinea. The discharge varies through the year, averaging around 3,000 m3/s (110,000 cu ft/s)–4,000 m3/s (140,000 cu ft/s) at the delta.
The Foja Mountains are located just north of the Mamberamo river basin in Papua, Indonesia. The mountains rise to 2,193 metres (7,195 ft), and have 3,000 square kilometers of old growth tropical rainforest in the interior part of the range. The Foja forest tract covers 9,712 square kilometers and is the largest tropical forest without roads in the Asia Pacific region.
The Digul River is a major river in southern Papua province, Indonesia, on the island of New Guinea. It is the fourth longest river in New Guinea after Sepik River, Mamberamo River and Fly River. With a total length of 853 km (530 mi) and has a drainage basin of 45,900 km2 (17,700 sq mi).
The Northern New Guinea lowland rain and freshwater swamp forests is a tropical moist broadleaf forest ecoregion of northern New Guinea.
New Guinea is the world's second-largest island, with an area of 785,753 km2 (303,381 sq mi). Located in Melanesia in the southwestern Pacific Ocean, the island is separated from Australia by the 150-kilometre wide Torres Strait, though both landmasses lie on the same continental shelf, and were united during episodes of low sea level in the Pleistocene glaciations as the combined landmass of Sahul. Numerous smaller islands are located to the west and east. The island's name was given by Spanish explorer Yñigo Ortiz de Retez during his maritime expedition of 1545 due to the resemblance of the indigenous peoples of the island to those in the African region of Guinea.
The Tariku or Rouffaer River is a river in the northern part of the Indonesian province of Papua. It is one of the major tributary of Mamberamo River with a total length of 488 km (303 mi).
The Taritatu or Idenburg River also called Baliem River is a river in the northern part of the Indonesian province of Papua. It is the largest tributary of Mamberamo River with a total length of 808 km (502 mi).
The Kapuas River is a river in the Indonesian part of Borneo island. It originates in the Müller Mountain Range at the center of the island and flows south until merging with the Barito River and discharging into the Java Sea. It should be distinguished from another Kapuas River, which starts on the other side of the same mountain range in central Borneo, but flows to the west and empties to the South China Sea.
The Sepik is the longest river on the island of New Guinea, and the second largest in Oceania by discharge volume after the Fly River. The majority of the river flows through the Papua New Guinea (PNG) provinces of Sandaun and East Sepik, with a small section flowing through the Indonesian province of Papua.
Oreophryne furu is a species of microhylid frogs endemic to the Mamberamo River basin in Papua, Western New Guinea. It is distinguished from other related species by its small size, unique call and egg-guarding behaviour.
The Yuat is the major tributary of the Sepik River in northern Papua New Guinea. The Yuat is on the right (southern) side and joins the Sepik about 20 linear km upstream from the Keram River, and just downstream from the Chambri Lakes. The eponymous (Middle) Yuat and Upper Yuat languages are spoken along the banks of the Yuat River.
The Mamberamo Lakes Plains are a large, flat low-lying area of the Mamberamo River basin in the Indonesian province Papua on the island of New Guinea. The plain is defined by the meandering tributaries of the Mamberamo, and includes hundreds of oxbow lakes. It is 300 kilometers long and about 50 kilometers wide, and is entirely enclosed by mountains apart from the outlet of the Mameramo. It is inhabited in the west, but the eastern lobe is largely uninhabited.
The Northern New Guinea montane rain forests is a tropical moist forest ecoregion in northern New Guinea. The ecoregion covers several separate mountain ranges lying north of New Guinea's Central Range and south of the Pacific Ocean.
Mamberamo Foja Wildlife Reserve is a large protected area on New Guinea, in Indonesia's Papua Province. It covers an area of 16,610 km2, and extends along the Mamberamo River and its tributaries from the foothills of the Central Range to the Pacific Ocean.
