Yonki Dam is an earth-fill embankment dam

Embankment dam

An embankment dam is a massive artificial water barrier. It is typically created by the emplacement and compaction of a complex semi-plastic mound of various compositions of soil, sand, clay and/or rock. It has a semi-permanent waterproof natural covering for its surface, and a dense, waterproof...

 over the Ramu River that supports the Ramu 1

Ramu 1

Ramu 1 Power Station is a 77 MW hydro electric power station located at the Ramu River in the Eastern Highlands provence of Papua New Guinea.The power station consists of five units. Units 1, 2 and 3 rated at 15 MW and units 4 and 5 rated at 17 MW. The power station is owned and operated by PNG...

 hydroelectric power plant and the (under construction) Yonki Toe of Dam power plant

Yonki Dam is located in the Eastern Highlands Province of Papua New Guinea

Papua New Guinea

Papua New Guinea , officially the Independent State of Papua New Guinea, is a country in Oceania, occupying the eastern half of the island of New Guinea and numerous offshore islands...

.

Construction of the Yonki Toe of Dam power plant is currently (May 2011) suspended.

The Highlands Highway

Highlands Highway

The Highlands Highway, sometimes known as the Okuk Highway, is the main land highway in Papua New Guinea. It connects several major cities and is vital for the movement of people and goods between the populous Highlands region and the coast....

passes over the Yonki Dam embankment. The adjacent Yonki villages support the operation of the dam and power station.