The Danubian Plain constitutes the northern part of Bulgaria

Bulgaria

Bulgaria , officially the Republic of Bulgaria , is a parliamentary democracy within a unitary constitutional republic in Southeast Europe. The country borders Romania to the north, Serbia and Macedonia to the west, Greece and Turkey to the south, as well as the Black Sea to the east...

, situated north of the Balkan Mountains

Balkan Mountains

The Balkan mountain range is a mountain range in the eastern part of the Balkan Peninsula. The Balkan range runs 560 km from the Vrashka Chuka Peak on the border between Bulgaria and eastern Serbia eastward through central Bulgaria to Cape Emine on the Black Sea...

 and south of the Danube

Danube

The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

. Its western border is the Timok River

Timok River

The Timok is a river in eastern Serbia and for the last 15 km of its run a border between eastern Serbia and western Bulgaria.It derives the names in all these from the name it had in antiquity, Latin: Timacus....

 and to the east it borders the Black Sea

Black Sea

The Black Sea is bounded by Europe, Anatolia and the Caucasus and is ultimately connected to the Atlantic Ocean via the Mediterranean and the Aegean seas and various straits. The Bosphorus strait connects it to the Sea of Marmara, and the strait of the Dardanelles connects that sea to the Aegean...

. The plain has an area of 31523 square kilometres (12,171.1 sq mi). It is about 500 kilometres (310.7 mi) long and 20 to 120 km (12.4 to 74.6 mi) wide.

The relief of the Danubian Plain is hilly, featuring numerous plateaux and river valleys. The climate is markedly temperate continental with a weak Black Sea influence in the east. Precipitation is on average 450–650 mm a year. Important rivers include the Danube

Danube

The Danube is a river in the Central Europe and the Europe's second longest river after the Volga. It is classified as an international waterway....

, the Iskar

Iskar

The Iskar is, with a length of 368 km, the longest river that runs solely in Bulgaria, and a tributary of the Danube.The Iskar is formed by three rivers, the Cherni Iskar, Beli Iskar and Levi Iskar , with the source being accepted to be the Prav Iskar, a tributary of the Cherni Iskar...

, the Yantra

Yantra River

The Yantra is a river in northern Bulgaria, a right tributary of the Danube. It is 285 km long and has a watershed of 7,862 km²....

, the Osam

Osam

The Osam is a river in northern Bulgaria. Its drainage basin is in between that of the river Vit to the west and the Yantra system to the east. The river has two main tributaries in its upper course: the Black Osam takes its source from the foot of Levski Peak in the Balkan Mountains, at an...

, the Vit

Vit

The Vit also Vid is a river in central northern Bulgaria with a length of 18 km. It is a tributary of Danube. The source of the Vit is in Stara Planina, below Vezhen Peak at an altitude of 2,030 m, and it empties into the Danube close to Somovit...

, the Rusenski Lom

Rusenski Lom

The Rusenski Lom is a river in northeastern Bulgaria, the last major right tributary of the Danube. It is formed by the rivers Beli Lom and Cherni Lom, the former taking its source south of Razgrad and the latter southeast of Popovo....

, the Ogosta

Ogosta

The Ogosta , is a river in Northern Bulgaria, a right tributary of the Danube. It takes it source from Vrazha Glava Peak on the border with Serbia. The towns of Chiprovtsi, Montana and Miziya are situated on the river's banks....

 and the Lom

Lom River

The Lom is a river in northwestern Bulgaria, a right tributary of the Danube flowing into it 1 km east of the town of Lom.The river takes its source from the foot of Midzhur , the highest peak of western Stara Planina, on the Bulgarian-Serbian border, and mainly flows northeast until its...

.

Among the major cities of the region are Varna

Varna

Varna is the largest city and seaside resort on the Bulgarian Black Sea Coast and third-largest in Bulgaria after Sofia and Plovdiv, with a population of 334,870 inhabitants according to Census 2011...

, Rousse

Rousse

Ruse is the fifth-largest city in Bulgaria. Ruse is situated in the northeastern part of the country, on the right bank of the Danube, opposite the Romanian city of Giurgiu, from the capital Sofia and from the Bulgarian Black Sea Coast...

, Pleven

Pleven

Pleven is the seventh most populous city in Bulgaria. Located in the northern part of the country, it is the administrative centre of Pleven Province, as well as of the subordinate Pleven municipality...

, Dobrich

Dobrich

Dobrich is a town in northeastern Bulgaria, the administrative centre of Dobrich Province. With 91,030 inhabitants, as of February 2011, Dobrich is the ninth most populated town in Bulgaria, being the centre of the historical region of Southern Dobruja...

, Shumen

Shumen

Shumen is the tenth-largest city in Bulgaria and capital of Shumen Province. In the period 1950–1965 it was called Kolarovgrad, after the name of the communist leader Vasil Kolarov...

, Veliko Tarnovo

Veliko Tarnovo

Veliko Tarnovo is a city in north central Bulgaria and the administrative centre of Veliko Tarnovo Province. Often referred to as the "City of the Tsars", Veliko Tarnovo is located on the Yantra River and is famous as the historical capital of the Second Bulgarian Empire, attracting many tourists...

, Vratsa

Vratsa

Vratsa is a city in northwestern Bulgaria, at the foothills of the Balkan Mountains. It is the administrative centre of the homonymous Vratsa Province. As of February 2011, the town has a population of 60,482 inhabitants....

, Vidin

Vidin

Vidin is a port town on the southern bank of the Danube in northwestern Bulgaria. It is close to the borders with Serbia and Romania, and is also the administrative centre of Vidin Province, as well as of the Metropolitan of Vidin...

, Montana

Montana, Bulgaria

- Elite High Scools :*Foreign Language HS "Petar Bogdan". Emphasis on English and German language proficiency. Recognized and praised for its scholars' academic accomplishments worldwide. http://gpchemont.com/sitegpche/...

, Lom, Silistra

Silistra

Silistra is a port city of northeastern Bulgaria, lying on the southern bank of the lower Danube at the country's border with Romania. Silistra is the administrative centre of Silistra Province and one of the important cities of the historical region of Southern Dobrudzha...

, Targovishte

Targovishte

Targovishte is a city in Bulgaria, capital of Targovishte Province. It is situated at the northern foot of the low mountain of Preslav on both banks of the Vrana River. The town is 335 km away to the north-east from the capital Sofia and about 125 km to the west from the city of Varna...

, and Razgrad

Razgrad

Razgrad is a city in northeastern Bulgaria, administrative and industrial centre of the homonymous Razgrad Province. As of February 2011, it has a population of 33,238 inhabitants.-History:...

.

Minerals

In the Dunavskata ravnina has a wide variety of minerals, some of them here:

• Lignite(Lomski and Mareshki basein)
• Fireproof clay (Plevensko)
• Oil,petrol (Dolen and Goren Dabnik, Pleven; s.Tyulenovo to Shabla)
• Manganese (Obrochishte, Carkva, Ignatievo)
• Copper ore (Belogradchik)