Emajõgi The second largest river in Estonia with a length of 100 km. is the second largest river in the country. It flows through Tartu County County in the east of Estonia (pop. 154,000). and passes the town of Tartu for 10km. There are many summer concerts on the banks of Emajõgi The second largest river in Estonia with a length of 100 km. , but you can also enjoy activities on the river. Try SUP boarding or take a historical barge to ride on the river.