The Tur River is a tributary

Tributary

A tributary or affluent is a stream or river that flows into a main stem river or a lake. A tributary does not flow directly into a sea or ocean...

 of the Tisza River

Tisza

The Tisza or Tisa is one of the main rivers of Central Europe. It rises in Ukraine, and is formed near Rakhiv by the junction of headwaters White Tisa, whose source is in the Chornohora mountains and Black Tisa, which springs in the Gorgany range...

. The sources are located in the Oaş Mountains

Oaş Mountains

The Oaş Mountains are a small volcanic mountain range in the Inner Eastern Carpathian Mountains of the Maramureş in Romania.Its highest mountain is Bran Peak ....

 in Romania

Romania

Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

. The Tur River starts at the junction of headwaters Gorova River

Gorova River (Tur)

The Gorova River is a headwater of the Tur River in Romania.-References:* Administraţia Naţională Apelor Române - Cadastrul Apelor - Bucureşti* Institutul de Meteorologie şi Hidrologie - Rîurile României - Bucureşti 1971...

 and Turişor

Turisor River

The Turişor River is a headwater of the Tur River in Romania.-References:* Administraţia Naţională Apelor Române - Cadastrul Apelor - Bucureşti* Institutul de Meteorologie şi Hidrologie - Rîurile României - Bucureşti 1971...

. The river then flows through Satu Mare County

Satu Mare County

Satu Mare County is a county of Romania. The capital city is Satu Mare. Besides Romanians , Satu Mare features a significant ethnic minority of Hungarians .-Demographics:...

 in Romania. The main town on the Tur river is Turulung

Turulung

Turulung is a commune of 3,910 inhabitants situated in Satu Mare County, Romania. It is composed of three villages: Drăguşeni, Turulung and Turulung-Vii.-Demographics:Ethnic groups :*Hungarians: 55.34%*Romanians: 31.88%...

,
The river then forms the border between Romania and the Ukraine

Ukraine

Ukraine is a country in Eastern Europe. It has an area of 603,628 km², making it the second largest contiguous country on the European continent, after Russia...

 on a reach of 5.2 km, and the border between Romania and Hungary

Hungary

Hungary , officially the Republic of Hungary , is a landlocked country in Central Europe. It is situated in the Carpathian Basin and is bordered by Slovakia to the north, Ukraine and Romania to the east, Serbia and Croatia to the south, Slovenia to the southwest and Austria to the west. The...

 for 1.1 km. The Tur river joins the Tisza river near Szatmárcseke in Hungary