The river Nedzingis (Nedingis, Amarnia) flows in Alytus county, Varena district, the river Merkys right tributary. Length of the river 22 km, the basin area 153 km ². The source at Rakatanskai village, 6 km southwest from Daugai town. Flows to south through the lakes Rakatanskai and Nedzingis. Flows into the river Sventoji 30 km from its mouth, 2 km southwest from Perloja town. Average gradient 202 cm/km. Average rated discharge downstream the lake Nedzingis 0.50 m³/s, at the mouth 1.06 m³/s.

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

12.6 Merkine - Druckunai road bridge. Nedzinge. Average rated discharge 0.86 m³/s. Average gradient 233 cm/km. The channeled river flows through meadows, width up to 5 m.
12.2 Small bridge. Nedzinge.
11.1 Channeled section of the river ends. A the river small forest. right Karuzai.
10.3 Low stone dam, height 0.5 m. Current accelerated. In the river bed stones, small rapids, shalows.
10.0 Low bridge. Dubaklonis.
9.7 The river flows through forest. Gradient increases, current accelerated.
6.3 left Karuzis. In the river to the mouth stones, small rapids, fallen trees, strainers.
6.0 Footbridge. Burokaraistis.
3.8 right Perkasas.
2.7 Varena - Merkine highway bridge. Under the bridge the river flows through concrete pipe.
0.9 left Western side of Perloja. Forest ends. To mouth a few footbridges.
0.0 The Nedzingis flows into the river Merkys.