The Oued Righ region has lost some Amazigh/Berber-speaking villages. Tahshanit/Tarighit is spoken in the villages of Temacine (mainly Tamellaht near the lake), Blidet Amor, Ghomra, and Meggarine. There are marked dialectal differences between the villages. Amazigh/Berber is not spoken in the city of Touggourt itself. (Mattouchi, 2021)
Information from: “Atlas of the World’s Languages in Danger” . Christopher Moseley (ed.) (2010) UNESCO Publishing
20 percent certain, based on the evidence available
"In 2008, rough estimates based on population figures, would put the number of speakers throughout the region at 8000-10 000. Further investigation is needed."