Hungary is a landlocked country in East-Central Europe with a land area of 93,030 square km. It measures about 250 km from north to south and 524 km from east to west. It has 2,106 km of boundaries, shared with Austria to the west, Serbia, Croatia and Slovenia to the south and southwest, Romania to the southeast, Ukraine to the northeast, and Slovakia to the north.
Harghita County is a county (județ) in the center of Romania, in eastern Transylvania, with the county seat at Miercurea Ciuc.
Banat is a geographical and historical region that straddles Central and Eastern Europe and which is currently divided among three countries: the eastern part lies in western Romania ; the western part of Banat is in northeastern Serbia ; and a small northern part lies within southeastern Hungary.
Serbia is a small country situated at the crossroads of Central and Southeast Europe, covering the far southern edges of the Pannonian Plain and the central Balkans. It shares borders with Bosnia-Herzegovina, Bulgaria, Croatia, Hungary, North Macedonia, Montenegro, Romania and Albania. Serbia is landlocked, though it is able to access the Adriatic Sea through Montenegro and inland Europe and the Black Sea via the Danube.
The Mureș is a 789-kilometre-long (490 mi) river in Eastern Europe. Its drainage basin covers an area of 30,332 km2 (11,711 sq mi). It originates in the Hășmașu Mare Range in the Eastern Carpathian Mountains, Romania, rising close to the headwaters of the river Olt, and joins the Tisza at Szeged in southeastern Hungary. In Romania, its length is 761 km (473 mi) and its basin size is 27,890 km2 (10,770 sq mi).
Szolnok is the county seat of Jász-Nagykun-Szolnok county in central Hungary. A city with county rights, it is located on the banks of the Tisza river, in the heart of the Great Hungarian Plain, which has made it an important cultural and economic crossroads for centuries. Szolnok also has one of Hungary’s best waterpolo teams.
The Körös or Criș is a river in eastern Hungary and western Romania. Its length is 128.6 km (79.9 mi) from the confluence of its two source rivers Fehér-Körös and Fekete-Körös to its outflow into the Tisza. Its drainage basin area is 27,537 km2 (10,632 sq mi). It has three source rivers, all of which have their origin in the Apuseni Mountains in Transylvania, Romania: Crișul Alb (Fehér-Körös), Crișul Negru (Fekete-Körös) and Crișul Repede (Sebes-Körös). The confluence of the rivers Fehér-Körös and Fekete-Körös is near the town Gyula. The Körös downstream from Gyula is also called the Kettős-Körös. 37.3 km further downstream, near Gyomaendrőd, the Sebes-Körös joins the Criș/Körös. The section downstream from Gyomaendrőd is also called the Hármas-Körös. The Körös flows into the Tisza River near Csongrád.
The Pannonian Basin, or Carpathian Basin, is a large basin situated in south-east Central Europe. The geomorphological term Pannonian Plain is more widely used for roughly the same region though with a somewhat different sense, with only the lowlands, the plain that remained when the Pliocene Epoch Pannonian Sea dried out.
The Crișul Alb (Romanian), is a river in western Romania, in the historical region of Transylvania, and in south-eastern Hungary.
The Great Hungarian Plain is a plain occupying the majority of the modern territory of Hungary. It is the largest part of the wider Pannonian Plain.. Its territory significantly shrank due to its eastern and southern boundaries being rewritten by the new political borders created after World War I when the Treaty of Trianon was signed in 1920.
The Săsar is a right tributary of the river Lăpuș in Maramureș County, Romania. It discharges into the Lăpuș in Bozânta Mare, southwest of Baia Mare. It is a medium-size river which flows through the cities of Baia Sprie and Baia Mare. Its length is 31 km (19 mi) and its basin size is 306 km2 (118 sq mi).
The Someș is a left tributary of the Tisza in Hungary and Romania. It has a length of 415 km (258 mi), of which 50 km are in Hungary. The Someș is the fifth largest river by length and volume in Romania. The hydrographic basin forms by the confluence at Mica, a commune about 4 km upstream of Dej, of Someșul Mare and Someșul Mic rivers. Someșul Mic originates in the Apuseni Mountains, and Someșul Mare springs from the Rodna Mountains.
Jász-Nagykun-Szolnok is the name of an administrative county in Hungary. It lies in central Hungary and shares borders with the Hungarian counties Pest, Heves, Borsod-Abaúj-Zemplén, Hajdú-Bihar, Békés, Csongrád, and Bács-Kiskun. The rivers Tisza and Körös flow through the county. The capital of Jász-Nagykun-Szolnok county is Szolnok. Its area is 5582 km². The county is named after the Ossetians (Jasz) and Cumans (Kun) who settled there, along with Szolnok. The county was part of the Danube–Criș–Mureș–Tisa Euroregion between 1997 and 2004.
The Bega or Begej, is a 244 km long river in Romania and Serbia. It rises in the Poiana Ruscă Mountains in Romania, part of the Carpathian Mountains, and it flows into the Tisa river near Titel, Vojvodina, Serbia. Its drainage basin covers an area of 4,458 km2 (1,721 sq mi), of which 2,362 km2 (912 sq mi) in Romania.
The Danube is the second-longest river in Europe, after the Volga in Russia. It flows through much of Central and Southeastern Europe, from the Black Forest into the Black Sea. A large and historically important river, it was once a frontier of the Roman Empire and today connects ten European countries, running through their territories or being a border. Originating in Germany, the Danube flows southeast for 2,850 km (1,770 mi), passing through or bordering Austria, Slovakia, Hungary, Croatia, Serbia, Romania, Bulgaria, Moldova, and Ukraine. Among the many cities on the river are 4 capitals: Vienna, Budapest, Belgrade and Bratislava. Its drainage basin amounts to 817 000 km² and extends into nine more countries.
The hydrology of Hungary, is mostly determined by Hungary's lying in the middle of the Carpathian Basin, half surrounded by the Carpathian Mountains. All parts of the country have some outflow. All surface water gravitates towards its southern center, and from there, is united in the Danube, which flows into the Black Sea. The whole of Hungary lies within the Danube drainage basin.
The 2000 Baia Mare Cyanide spill was a leak of cyanide near Baia Mare, Romania, into the Someș River by the gold mining company Aurul, a joint-venture of the Australian company Esmeralda Exploration and the Romanian government.
The Danube–Criș–Mureș–Tisa Euroregion is a euroregion located in Hungary, Romania and Serbia. It is named after four rivers: Danube, Criș, Mureș and Tisa.
