It is a right tributary of the Jägala River [Wikidata].

[1] The Jänijõgi originates 5.5 kilometres (3.4 mi) west of Ambla, at the settlement of Käravete in Ambla Parish, 1.2 kilometers northwest of the crossroads, near the southeastern edge of the village of Kukevere.

The river passes through the village of Jäneda.

Records going back to 1591 indicate that the Jäneda Mill on the river was in existence by then.

This article related to a river in Estonia is a stub.