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Kathmandu is located in the northwestern part of the Kathmandu Valley to the north of the Bagmati River and covers an area of 50.67 km2 (19.56 sq mi). The average elevation is 1,400 metres (4,600 ft) above sea level. The city is directly bounded by several other municipalities of the Kathmandu valley: south of the Bagmati by Lalitpur Sub-Metropolitan City (Patan) with which it today forms one urban area surrounded by a ring road, to the southwest by Kirtipur Municipality and to the east by Madyapur Thimi Municipality. To the north the urban area extends into several Village Development Committees. However, the urban agglomeration extends well beyond the neighboring municipalities, e. g. to Bhaktapur and just about covers the entire Kathmandu valley.
What geographic portion of the Kathmandu Valley houses Kathmandu?
northwestern