| Barnaulka | |
| Other Name: | Барнаулка |
| Source1: | Lake Zerkalnoye |
| Source1 Coordinates: | 52.5558°N 81.9528°W |
| Mouth: | Ob |
| Mouth Location: | Barnaul |
| Mouth Coordinates: | 53.3297°N 83.805°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Russia |
| Length: | 207km (129miles) |
| Basin Size: | 5720km2 |
| Pushpin Map: | Russia Altai Krai |
| Pushpin Map Caption: | Mouth location in Altai Krai, Russia |
The Barnaulka (Russian: Барнаулка) is a river in Altai Krai, Russia. The river is long and has a catchment area of .
The basin of the river is located in the Rebrikhinsky, Shipunovsky and Pavlovsky districts. The city of Barnaul is named after the river.[1] The Barnaulka suffers from the impact of pollutants released by industrial activity along its course.[2]
The Barnaulka is a left tributary of the Ob river. It has its sources in Zerkalnoye, a lake with a surface of lying 60km (40miles) to the west of Aleysk. The river flows in a roughly northeastern direction. The upper course of the river is within a trench of glacial origin of the Ob Plateau. The river basin includes a chain of lakes connected by marshy canals, such as Bakhmatovskoye and Peschanoye, as well as numerous swamps and smaller lakes. Finally the Barnaulka meets the left bank of the Ob at Barnaul, 3409km (2,118miles) from the Ob's mouth.[3]
The longest tributary of the Barnaulka is the 18km (11miles) long Vlasikha (Власиха) on the left. The river is largely fed by groundwater. It is frozen between November and April.[4]