Laruma River

{{short description|Watercourse, Solomon Islands, Oceania}}

Laruma River is a watercourse on Bougainville in the Solomon Islands of the Pacific Ocean.{{Cite book |last1=United States Board on Geographical Names |url=https://catalog.hathitrust.org/Record/102122937 |title=Gazetteer of Melanesia ... |last2=United States |date=1943 |publisher=War Dept., Army Map Service, Corps of Engineers, U. S. Army |location=Washington, D. C.}} Located on the west coast of the island at the edge of the Keriaka Limestone Plateau, the Laruma drains into the Solomon Sea.{{Cite book |last1=Griffin |first1=Helga-Maria |url=https://catalog.hathitrust.org/Record/004935250 |title=Bougainville before the conflict |last2=Regan |first2=A. J. |date=2005 |publisher=Pandanus Books, Research School of Pacific and Asia Studies, the Australian National University ; UNIREPS, University of New South Wales distributor |isbn=978-1-74076-138-3 |location=Canberra : Sydney}} The mouth of the river lies north of village of Laruma (population 141 in 1972){{cn|date=April 2025}} and south of Turupei. The Laruma River marks the boundary between Bannoni language-speaking people to the south and Pivu language-speaking people to the north.{{cn|date=April 2025}} Circa 2001, the Laruma River valley had a population density of 14 people per km2.{{Cite book |last1=Hanson |first1=L. W. |url=https://catalog.hathitrust.org/Record/004244387 |title=Papua New Guinea rural development handbook |last2=Australian National University |date=2001 |publisher=Land Management Group, Dept. of Human Geography, Research School of Pacific and Asian Studies, Australian National University |isbn=978-0-9579381-0-6 |series=Rural development handbook |location=Canberra, ACT}}