- Upper Thracian Plain
The Upper Thracian Plain ( _bg. Горнотракийска низина, "Gornotrakiyska nizina") constitutes the northern part of the historical region of
Thrace. It is located in southern Bulgaria, between the Sredna Goramountains to the north and west; the Rhodopes, Sakarand Strandzhato the south; and the Black Seato the east. A fertile agricultural region, the Upper Thracian Plain proper has an area of 6,032 km² and an average elevation of 168 m.
The plain is part of North Thrace or Northern Thrace (Северна Тракия, "Severna Trakiya") (as opposed to
Western Thraceand Eastern Thraceto the south), which refers to the whole of southern (sub-Balkan) Bulgaria east of the Mesta Riverand Sredna Gora (thus also including hilly or mountainous terrain).
The climate is transitional continental. The highest temperature recorded in Bulgaria occurred here: it was 45.2 °C at
Sadovoin 1916. The precipitation is 550 mm a year. Important rivers are the Maritsaand its tributaries, the Tundzha, the Stryama, the Topolnitsa, and the Vacha.
Important cities include
Plovdiv, Burgas, Stara Zagora, Pazardzhik, Asenovgrad, Haskovo, Yamboland Sliven.
* cite book
last = Collective
year = 2002
title = Balgarska entsiklopediya A-YA
publisher = IK Trud
location = Sofia
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