Nevėžis

The Nevėžis is the sixth longest river in Lithuania and one of the main tributaries of the Nemunas. The long Nevėžis flows entirely within Lithuania. Among the rivers that flow exclusively within Lithuania's borders, the Nevėžis is the second longest, after the Šventoji. Its source is in the Anykščiai District Municipality. The river first flows in a northwesterly direction, but at Panevėžys it turns southwest, and passing Kėdainiai, flows into the Neman just west of Kaunas near Raudondvaris.

There is a popular misconception that the name Nevėžis means "a river without crayfishes" because vėžys is the Lithuanian word for crayfish and ne means "no". In fact, the Nevėžis is known for its variety of fauna which include crayfish. Other ethimology suggested from proto Baltic *nevēźā (ex. Lithuainian ne vežti 'not to carry') and means 'slow, not conveying river'. The Soviet Belarusian geographer suggested that the name Nevėžis could be derived from a Finnish word nevo meaning "swamp". The upper river has swampy banks. The river gave name to many things including Panevėžys, the fifth largest city in Lithuania. Its name means "[Town] near Nevėžis." FK Nevėžis and KK Nevėžis are also named after the river. The Nevėžis is important in Lithuanian culture because it flows through the middle of Lithuania. During the Middle Ages, the river was considered to be a natural border between two regions of Lithuania: Samogitia and Aukštaitija.

The Nevėžis is connected with two other large rivers by canals. In order to reduce floods on the Lėvuo river, the Sanžilė Canal was dug in 1930. A draft to connect these rivers was first written in 1797. The location was very convenient: about 9,000 years ago Nevėžis was a tributary to Lėvuo. The land between the rivers was low and there was a small Sanžilė rivulet which could serve as the basis for the new canal. In the 19th century the Neman delta belonged to the Germans. This was an obstacle in trading. The Russian Empire was looking for ways to direct ships from the Neman directly to the port of Riga. The plan was abandoned because of insufficient funds. The idea was revisited again in 1914, the preparations for construction started but were interrupted by World War I. After reclaiming the origin of the Lėvuo, heavy rains would cause the flood of as many as twenty villages. It was decided to dig an 8 km length canal. In 1961–63 another canal connecting the Nevėžis with the Šventoji was finished. It is 12 km in length. There is a pumping station near Kavarskas to supply the canal with water.