page_title: Man Sagar Lake
section_title: Topography
hierarchical_section_title: Man Sagar Lake / Topography
caption_attribution_description: English: Own pic
context_page_description: Man Sagar Lake is an artificial lake, situated in Jaipur, the capital of the state of Rajasthan in India. It is named after Raja Man Singh, the then ruler of Amer, who constructed it in c. 1610 by damming the Dravyavati river. The Jal Mahal is situated in the middle of the lake.
context_section_description: The lake, situated to the north of Jaipur city lies between Amer, the historic city and Jaipur, the provincial headquarters of Rajasthan state. It has a water spread area of 300 acres (121 ha) and is enclosed by the Aravalli hills on the north, west and eastern sides, while the southern side consists of plains that are intensely inhabited. There is the Nahargarh Fort (Nahargarh meaning home of tigers) in the hills that provides a commanding view of the Man Sagar Lake and the Jal Mahal palace, in addition to a beautiful view of the city of Jaipur. The lake was created by constructing a dam across the Darbhawati River, between Khilagarh hills and the hilly areas of Nahargarh, in the 16th century. The catchment area (watershed) for the lake is 23.5 square kilometres (9.1 sq mi) contributed by a semi-urban area as to 50% (generating in heavy rains unpaved street erosion) and hilly terrain accounting for the balance, being the largely-deforested or precipitous Aravalli hills, which also creates siltation. It is believed such deposition did not have to be fixed with dredging and filtration before the 20th century. Rainfall averages 657.4 millimetres (25.88 in) per year (90% of which occurs during June to September). The outlet end of the dam feeds a large irrigation system (obligatory water demand for this is reported to be 2,410,000 cubic metres during the five months from November to March). Two large nalas (streams) that also drain the surrounding Nahargarh hills and Jaipur are the Brahmpuri and Nagtalai, which bring in untreated sewage, in addition to sediment run-offs of unpaved streets.
  The Aravalli hills surrounding the lake area, towards the north east of Jaipur, have quartzite rock formations (with a thin layer of soil cover). Rock exposures on the surface in some parts of the project area have also been utilised for constructing buildings. From the north east, the Kanak Vrindavan valley, where a temple complex sits, the hills slope gently towards the lake edge. Within the lake area, the ground area is made up of a thick mantle of soil, blown sand and alluvium. Forest denudation, particularly in the hilly areas, has caused soil erosion, compounded by wind and water action. Due to these human factors silt built-up in the lake raises the bed level of the lake annually by many centimetres.
caption: Aravalli hills in Jaipur
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