Linguaculture is a heterogeneous linguacognitive phenomenon that depends on the local area, values, and community, as well as on national and ethno-specifics cultural codes and subcodes of mythology, theology, anthropomorphism, biomorphism, household, commerce, etc. The article introduces the linguacultural corpus of the Northern Angara Region that unites oral and multimedia (polycode) texts of traditional regional linguaculture. The corpus is being developed at the Siberian Federal University and includes empirical material of complex folklore, dialectological, and ethnographic expeditions to Kezhemskiy, Boguchany and Motygino areas. The article describes the basic principles of the corpus, i.e. representativeness, synchronism, and regionality, as well as the thematic, genre, functional, and semantic diversity of oral and polycode texts. Culturally marked oral texts are included in the corpus based on their linguistic and cultural informativeness. The corpus is divided into dialect, folklore, and multimedia subcorpuses of valuable information, which can solve various issues of Russian studies, as well as practical issues of linguacultural ecology. The information search process depends on several parameters: speech and folklore genre, topic, basic concept, and word. The article also contains a comparative analysis with other specialized corpora of oral speech, which revealed prospects for further development and application. The linguacultural corpus of the Northern Angara Region contributes to regional lexicography and other branches of Russian studies, e.g. Siberian linguaculture, language and culture, language and mentality, etc.