The river Ligaja (Ilge, Ilgele) flows in Utena and Zarasai districts. Length of the river 32 km, the basin area 122 km ². The source at Ruzgiskiai village, 7 km north from Tauragnai village. Flows to the northeast through the lakes Vaikesas, Sylis, Ilgis, Alksnis, Ligajai and Ligajikstis. Flows into the pond of Antaliepte (the lake Antalieptes marios) 6 km north from Salakas village. Average gradient 189 cm / km. Average rated discharge at the mouth 0.89 m³/s.

All year, better at higher water level.
Rapids, shalows, low footbridges, strainers.
WW 0/1 (1+).

9.6 Daugailiai - Salakas road bridge. left Astrakalinis. right Uzeniskes. The current speed average - fast. Shalows, small rapids, can be strainers. The river width 5 m.
9.1 The Ligaja flows into the lake Ligajai. Area of the lake 177 ha, length 4775 m, max width 750 m, two very long peninsulas. Three islands. The banks high. left Trinkiskes.
9.7 right hillfort Uzeniske.
4.4 The Ligaja flows out from the lake Ligajas. 20 m downstream bridge. Under the bridge the river flows through concrete pipe. Not navigable, portage needed. right Cepeliskes. Average gradient to the mouth 110 cm/km. left hillfort Kiemoniai.
4.0 The Ligaja flows into the lake Ligajykstis.
3.5 The Ligaja flows out from the lake Ligajykstis. The current fast. The banks high, in some places steep. In the river stones, in some places boulders, small rapids, shalows, fallen trees, strainers, low footbridges. The riverbed width 7-9 m.
2.4 right Varniskes.
1.7 Small dam.
0.8 Bridge. Under the bridge the river flows through concrete pipe. Not navigable, portage needed. right Kamionys.
0.0 The Ligaja flows into the pond of Antaliepte (the lake Antalieptes marios) (into the river Sventoji).