| Nežárka | |
| Source1: | Kamenice |
| Source1 Location: | Těmice, Křemešník Highlands |
| Mouth Location: | Lužnice |
| Mouth Coordinates: | 49.1875°N 15.065°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Czech Republic |
| Subdivision Type2: | Region |
| Subdivision Name2: | South Bohemian |
| Length: | 85.6km (53.2miles) |
| Discharge1 Avg: | 12.3m3/s near estuary |
| Basin Size: | 1000.8km2 |
The Nežárka (; German: Naser) is a river in the Czech Republic, a right tributary of the Lužnice River. It flows through the South Bohemian Region. It is formed by the confluence of the Kamenice and Žirovnice rivers in Jarošov nad Nežárkou. Together with the Kamenice, which is its main source, the Nežárka is 85.6km (53.2miles) long. Without the Kamenice, it is 56km (35miles) long.
The river was originally named Včelnice. Around 1500, it began to be called Nežárka after the suburb of the same name in Jindřichův Hradec.[1] It was officially renamed in 1654.[2]
From a water management point of view, the Nežárka, Kamenice and Žirovnice are three different rivers with separate numbering of river kilometres. The Nežárka itself is formed by the confluence of the Kamenice and Žirovnice in Jarošov nad Nežárkou, and is 56km (35miles) long. In a broader point of view, the Nežárka (as Kamenice) originates in the territory of Těmice in the Křemešník Highlands, on the slope of the Bohutín hill at the elevation of and flows to Veselí nad Lužnicí, where it enters the Lužnice River at the elevation of . It is 85.6km (53.2miles) long. Its drainage basin has an area of 1000.8km2.[3]
The sources and longest tributaries of the Nežárka are:
| Tributary | Length (km) | River km | Side | |
|---|---|---|---|---|
| Hamerský potok | 46.3 | 44.4 | left | |
| Kamenice | 29.5 | 56.0 | – | |
| Žirovnice | 29.3 | 56.0 | left | |
| Řečice | 21.5 | 11.8 | right |
The most notable settlement on the river is the town of Jindřichův Hradec, other settlements on the river are Jarošov nad Nežárkou, Rodvínov and Stráž nad Nežárkou. The river flows through the municipal territories of Jarošov nad Nežárkou, Rodvínov, Horní Skrýchov, Jindřichův Hradec, Dolní Žďár, Lásenice, Stráž nad Nežárkou, Plavsko, Hatín, Novosedly nad Nežárkou, Kardašova Řečice, Val, Drahov, Vlkov and Veselí nad Lužnicí.
The lower course of the Nežárka flows through the Třeboň Basin, which is known for its fishponds. There are 528 bodies of water larger than 1 ha in the basin area and many smaller. The largest body of water in the basin area is the Holná (or Velká Holná) Pond with an area of .[3] There are no ponds or reservoirs built directly on the Nežárka.
The Nežárka is suitable for river tourism. It it suitable for beginner paddlers.[4]