Piusa
Top 7 in Top 10 Longest Rivers in Estonia
The Piusa is a river in southeastern Estonia that flows for 14 kilometers before flowing into Lake Pihkva in Russia's Pskov Oblast. Piusa is the border river between Estonia and the Russian Federation over a 17-kilometer stretch near Pechory.
Of all the Estonian rivers, the Piusa has the steepest descent (214 metres).
Length: 109 km (68 mi)