Ala-Buga

The Ala-Buga () is a left tributary of the Naryn in Naryn Region of Kyrgyzstan. The river is known as Arpa in upper reaches until confluence with the Bychan. The Ala-Buga is formed on the north slopes of the Torugart Too range and the south slopes of the Djaman Too mountains.
It is long, and has a drainage basin of . It has an average elevation of , an annual average flow rate of , and an average specific discharge of 8.35 l/s•km².
Settlements located along the banks of Ala-Buga include , Jerge-Tal and Kongorchok.