sentences:  Thirty-three villages lie in the catchment area, with a total estimated population of 10,885.The lake gave its name to the nearby Kutubu Oil Project, Papua New Guinea's first commercial oilfield development, operated by Oil Search Limited, and which began production in 1992.The development has supported the local economy, and caused a general in-migration to the area, and ecological problems resulting from rapid population growth, including pollution, forest destruction and overfishing.