Izhora

Izhora (Russian: Ижора), also known as Inger River, is a left tributary of the Neva River on its run through Ingria in northwestern Russia from Lake Ladoga to Gulf of Finland. A settlement of Ust-Izhora (lit. "mouth of Izhora") is situated at the confluence of Izhora and Neva, halfway between Saint Petersburg and Schlisselburg. The town of Kolpino is located on the Izhora as well. The river is noted as the furthest Swedish forces ever reached between the Viking Age and the Time of Troubles.

Izhora's calculated length is 76 kilometers. The river draws its water mainly from natural groundwater springs, snow melt, and rain water. The river has a sustainable underground water supply in both summer and winter, never drying up or freezing through.