The total length of the Nioman/Nemunas/Neman is 914 km (568 mi).
 It is the 4th longest river in the Baltic Sea basin.
 Over its entire length, 436 km (271 mi) flows in Belarus and 359 km (223 mi) in Lithuania.
A 116 km (72 mi) stretch is the border between Lithuania and Russia's Kaliningrad oblast.

Its greatest depth is 5 m (16 ft), and at its widest it extends about 500 m (1,600 ft).

The Nioman/Nemunas/Neman is a slow river; it flows at about 1 to 2 m/s (3.3 to 6.6 ft/s).

During floods, water discharge can increase up to 11-fold, to more than 6,800 m³/s (240,000 cu ft/s).
Severe floods occur on the lower reaches of the river about every 12 – 15 years, which sometimes wash out bridges.

The Nioman/Nemunas/Neman is an old river, dating back to the last glacial period.
Its valley is now up to 60 meters (200 ft) deep and 5 km (3 mi) broad.

It has about 105 first-class tributaries, the largest being the rivers Neris (Viliya) (510 km (320 mi)), Shchara (325 km (202 mi)), and Šešupė (298 km (185 mi)).
Fifteen of the tributaries are longer than 100 km (62 mi).

In the complete Nioman/Nemunas/Neman basin, there are tributaries extending to the 11th order.

The Nemunas basin in Lithuania drains more than 20,000 rivers and rivulets and covers 72% of Lithuania's territory.

The total area of the Nioman/Nemunas/Neman basin is 98,200 km² (37,900 sq mi), 34,610 km² (13,360 sq mi) of which are within Belarus, the Lithuanian portion of this basin is 46,695 km² (268 sq mi).

Valley of Neman in Grodno Region is the lowest point above sea level in Belarus at 80 to 90 m (260 to 300 ft).
The total length of the Nioman/Nemunas/Neman is 914 km (568 mi).  It is the 4th longest river in the Baltic Sea basin.  Over its entire length, 436 km (271 mi) flows in Belarus and 359 km (223 mi) in Lithuania. A 116 km (72 mi) stretch is the border between Lithuania and Russia's Kaliningrad oblast.
Its greatest depth is 5 m (16 ft), and at its widest it extends about 500 m (1,600 ft).
The Nioman/Nemunas/Neman is a slow river; it flows at about 1 to 2 m/s (3.3 to 6.6 ft/s).
During floods, water discharge can increase up to 11-fold, to more than 6,800 m³/s (240,000 cu ft/s). Severe floods occur on the lower reaches of the river about every 12 – 15 years, which sometimes wash out bridges.
The Nioman/Nemunas/Neman is an old river, dating back to the last glacial period. Its valley is now up to 60 meters (200 ft) deep and 5 km (3 mi) broad.
It has about 105 first-class tributaries, the largest being the rivers Neris (Viliya) (510 km (320 mi)), Shchara (325 km (202 mi)), and Šešupė (298 km (185 mi)). Fifteen of the tributaries are longer than 100 km (62 mi).
In the complete Nioman/Nemunas/Neman basin, there are tributaries extending to the 11th order.
The Nemunas basin in Lithuania drains more than 20,000 rivers and rivulets and covers 72% of Lithuania's territory.
The total area of the Nioman/Nemunas/Neman basin is 98,200 km² (37,900 sq mi), 34,610 km² (13,360 sq mi) of which are within Belarus, the Lithuanian portion of this basin is 46,695 km² (268 sq mi).
Valley of Neman in Grodno Region is the lowest point above sea level in Belarus at 80 to 90 m (260 to 300 ft).
Neman