| Kollaa Колласйоки, Kollaanjoki | |
|---|---|
 | |
| Native name | Kollasjoki (Finnish) |
| Location | |
| Country | Russia |
| Region | Republic of Karelia |
| Physical characteristics | |
| Source | Lake Kollasjärvi |
| • elevation | 117 m (384 ft) |
| Mouth | Lake Tulmozero |
• coordinates | 61°40′19″N 32°14′01″E / 61.672°N 32.2337°E |
| Length | 76 km (47 mi) |
| Basin features | |
| Progression | Lake Tulmozero→ Tulemayoki→ Lake Ladoga→ Neva→ Gulf of Finland |
The Kollaa (Russian: Колласйоки, Finnish: Kollaanjoki or Kollasjoki) is a 76-kilometre (47 mi) long river in the Republic of Karelia, Russia. It starts from Lake Kollasjärvi in the Suoyarvsky District and flows to Lake Tulmozero (Finnish: Tulemajärvi) in the Pryazhinsky District.
Before World War II, the source of the river was a part of the Finnish municipality Suistamo and it flowed further through Suojärvi to Tulemajärvi on the Russian side.