The river Saide (Moliuvene) flows in Vilnius county, Trakai district, the river Neris left tributary. Length of the river 5 km, the basin area 116.2 km ². The Saide flows out from the lake Didysis (Didziulis) and flows to northwest and north through Paneriai forest. Flows into the river Neris 134 km from its mouth at Saidziai village. To basin of the river Saide belongs the lakes Baltis, Galve, Luka, Skaistis, Totoriskiu. Average gradient 567 cm/km. Average rated discharge at the mouth 0.98 m³/s.

At high water level. Spring flood, or after heavy rains.
Rapids, shalows, dam, strainers.
WW 0/1+ (2-).

5.1 The Saide flows out from the lake Didysis (Didziulis). Gradient to the dam of Vosyliukai not too big, dowstream the dam up to 2000 cm/km.
5.0 Vilnius - Kaunas highway bridge.
4.8 Road parallel to Vilnius - Kaunas highway bridge. left Moluvenai. The river width 2-7 m. The banks low, in the riverbed reeds. The current calm, in some places accelerated. The river in some places divides in the reed duct. Many beavers dams.
4.4 The river flows into the forest.
3.9 The river flows out the forest.
3.6 The river flows into the forest.
3.9 The river flows out the forest.
2.6 left not navigable duct. Keep right. left Vosyliukai.
2.1 Begins the pond of Vosyliukai.
1.6 The dam of Vosyliukai. 50 m downstream bridge.
1.4 left Vosyliukai. The river flows into the forest. A lot of strainers. The gradient increases. In the riverbed stones, boulders, rapids.
0.6 Number of strainers sharply reduced. The gradient big. The banks high, steep. In the riverbed stones, boulders, rapids.
0.3 left glade overgrown by oaks.
0.1 Bridge. The river flows through three concrete pipes approximately 1 m in diameter; one of them is navigable. left Saidziai. The gradient even bigger. In the riverbed stones, boulders, rapids. The river flows through small gorge.
0.0 The Saide flows into the river Neris.