Olenyoksky District
Olenyoksky District (; , "Ölöön uluuha", ), or Olenyoksky-Evenki National District, is an administrative and municipal district (raion, or "ulus"), one of the thirty-four in the Sakha Republic, Russia. It is located in the west of the republic and borders with Anabarsky District in the north, Bulunsky and Zhigansky Districts in the east, Vilyuysky, Verkhnevilyuysky, and Nyurbinsky Districts in the southeast, Mirninsky District in the south and southwest, and with Krasnoyarsk Krai in the west and northwest. The area of the district is . Its administrative center is the rural locality (a "selo") of Olenyok. Population: 4,091 (2002 Census); The  population of Olenyok accounts for 55.1% of the district's total population. Geography. The main rivers in the district are the Olenyok, with its tributaries Arga-Sala, Siligir, Ukukit, Birekte, Kuoyka and Beyenchime, as well as the Anabar. The largest lake is Lake Eyik. Average January temperature ranges from and average July temperature ranges from . History. The district was established on October 1, 1935. Demographics. As of the 1989 Census, the ethnic composition was as follows: Economy. The economy of the district is mostly based on agriculture. There are deposits of diamonds, natural gas, and construction materials.