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The Noor River (also Nur River) is a river in northern Iran in Mazandaran Province, Noor County. It flows through the Alborz mountain range, generally eastward, past the town of Baladeh into the Haraz River.

Course

The Noor arises in the west at Labashm Pass at an elevation of 3,170 m. It heads generally eastward and enters the Haraz River at an elevation of 700 m.

Part of the course of the Noor River was described in the Scottish Geographical Magazine in 1898 as follows:

"At the Yalu gorge the Nur cuts at right angles through an enormous mass of basalt, forming a rocky defile very remarkable for its gloomy grandeur and dark colouring, so markedly in contrast with the snowwhite precipices of gypsum which rise on either side of the valley at the village of Yalu. The valley is ruggedly picturesque the whole way down to Baladeh, and the river contains trout that took our flies. At Baladeh, the Nur, passing through a defile, turns sharply east to join the Lar river at Panjab;"^[1]

Central Alborz rivers + mountain range map

Map of central Alborz	Peaks:	1 Alam-Kuh
−25 to 500 m (−82 to 1,640 ft) 500 to 1,500 m (1,600 to 4,900 ft) 1,500 to 2,500 m (4,900 to 8,200 ft) 2,500 to 3,500 m (8,200 to 11,500 ft) 3,500 to 4,500 m (11,500 to 14,800 ft) 4,500 to 5,610 m (14,760 to 18,410 ft)	2 Azad Kuh	3 Damavand
	4 Do Berar	5 Do Khaharan
	6 Ghal'eh Gardan	7 Gorg
	8 Kholeno	9 Mehr Chal
	10 Mishineh Marg	11 Naz
	12 Shah Alborz	13 Sialan
	14 Tochal	15 Varavašt
	Rivers:	0
	1 Alamut	2 Chalus
	3 Do Hezar	4 Haraz
	5 Jajrood	6 Karaj
	7 Kojoor	8 Lar
	9 Noor	10 Sardab
	11 Seh Hazar	12 Shahrood
	Cities:	1 Amol
	2 Chalus	3 Karaj
	Other:	D Dizin
	E Emamzadeh Hashem	K Kandovan Tunnel
	* Latyan Dam	** Lar Dam