The Sepik–Ramu languages are an obsolete language family of New Guinea linking the Sepik, Ramu, Nor–Pondo, Leonhard Schultze (Walio–Papi) and Yuat families, together with the Taiap language isolate, and proposed by Donald Laycock and John Z'graggen in 1975.
The Chambri Lakes are a series of swamps and shallow water canals in the East Sepik Province of Papua New Guinea that are seasonally filled by the flooding of the Sepik and Ramu rivers in vast area of 216 km2 (83 sq mi). During the northwest monsoon season, from September to March, occurs overflow of two of the Sepik's tributaries and vast Chambri Lake is created. The Chambri Lakes form in the middle Sepik, between the village of Pagwi and the junction of the Yuat River with the Sepik. The inhabitants of the Chambri Lakes are renowned for their artistry. The Chambri language is spoken in the Chambri Lakes region.
The Torricelli languages are a family of about fifty languages of the northern Papua New Guinea coast, spoken by about 80,000 people. They are named after the Torricelli Mountains. The most populous and best known Torricelli language is Arapesh, with about 30,000 speakers.
The Ramu–Lower Sepika.k.a.Lower Sepik–Ramu languages are a proposed family of about 35 Papuan languages spoken in the Ramu and Sepik river basins of northern Papua New Guinea. These languages tend to have simple phonologies, with few consonants or vowels and usually no tones.
The Sepik or Sepik River languages are a family of some 50 Papuan languages spoken in the Sepik river basin of northern Papua New Guinea, proposed by Donald Laycock in 1965 in a somewhat more limited form than presented here. They tend to have simple phonologies, with few consonants or vowels and usually no tones.
The Yuat languages are an independent family of five Papuan languages spoken along the Yuat River in East Sepik Province, Papua New Guinea. They are an independent family in the classification of Malcolm Ross, but are included in Stephen Wurm's Sepik–Ramu proposal. However, Foley and Ross could find no lexical or morphological evidence that they are related to the Sepik or Ramu languages.
The Alamblak language is spoken in the Angoram District of East Sepik Province, Papua New Guinea. One dialect is spoken in nine villages on the Middle Karawari and Wagupmeri rivers, and another in four villages near Kuvanmas Lake. It is the easternmost of the Sepik Hill languages.
The Ramu languages are a family of some thirty languages of Northern Papua New Guinea. They were identified as a family by John Z'graggen in 1971 and linked with the Sepik languages by Donald Laycock two years later. Malcolm Ross (2005) classifies them as one branch of a Ramu – Lower Sepik language family. Z'graggen had included the Yuat languages, but that now seems doubtful.
The Sepik Hill languages form the largest and most ramified branch of the Sepik languages of northern Papua New Guinea. They are spoken along the southern margin of the Sepik floodplain in the foothills of Central Range of south-central East Sepik Province.
The Grass languages are a group of languages in the Ramu language family. It is accepted by Foley (2018), but not by Glottolog. They are spoken in East Sepik Province, Papua New Guinea, with a small number of speakers also located just across the provincial border in Madang Province.
The Yellow River languages are a small family of clearly related languages,
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.
The Mongol–Langam, Koam, or Ulmapo languages are a language group of Keram Rural LLG, East Sepik Province, Papua New Guinea belonging to the Ramu language family. Foley (2018) includes them within the Grass languages, but they were not included in Foley (2005).
Mundugumora.k.a.Biwat is a Yuat language of Papua New Guinea. It is spoken in Biwat village of Yuat Rural LLG, East Sepik Province.
The Arafundi languages are a small family of clearly related languages in East Sepik Province, Papua New Guinea. They are conjectured to be related to the Piawi and Madang languages. They are named after the Arafundi River.
Namia is a Sepik language spoken in Namea Rural LLG, Sandaun Province, Papua New Guinea. It goes by various names, such as Edawapi, Lujere, Yellow River. Language use is "vigorous" (Ethnologue).
Bun is a Yuat language of Papua New Guinea. It is spoken in Biwat village of Yuat Rural LLG, East Sepik Province.
Changriwa is a Yuat language of Papua New Guinea. It is spoken in Changriwa village, Angoram-Middle Sepik Rural LLG, East Sepik Province.
Tapei is an Arafundi language of Papua New Guinea. It is close to Nanubae; the name Alfendio was once used for both.
The Upper Yuat languages consist of two small language families, namely Arafundi and Piawi, spoken in the region of the upper Yuat River of New Guinea. The connection was first suggested by William A. Foley and confirmed by Timothy Usher, who further links them to the Madang languages.
Papua New Guinea 