Jaisalmer has a middling elevation of 229 metres (751 ft). It is placed near the border of India and Pakistan in West Rajasthan, and covers an area of 5.1 km. The maximum summer temperature is around 41.6 C (106.9 F) while the minimum is 25 C (77 F). The maximum winter temperature is usually around 23.6 C (74.5 F) and the minimum is 7.9 C (46.2 F). The standard rainfall is 150 millimetres (5.9 in).[2] Jaisalmer is almost entirely a sandy waste, forming a part of the Great Indian Desert. The general aspect of the area is that of an perpetual sea of sand hills, of all shapes and sizes, some rising to a height of 150 feet (46 m). Those in the west are covered with log bushes, those in the east with tufts of long grass. Water is scarce, and generally brackish; the average depth of the wells is said to be about 250 feet (76 m). There are no perennial streams, and only one small river, the Kakni, which, after flowing a distance of 28 metres (92 ft), spreads over a large surface of flat ground, and forms Lake Orjhil ("The Bhuj-Jhil"). The climate is dry and healthy. Throughout Jaisalmer only raincrops, such as bajra, jawar, motif, til, etc., are grown; spring crops of wheat, barley, etc., are very rare. Owing to the scant rainfall, irrigation is almost unknown. Distances: Jaipur (558 km), Ahmedabad (626 km), Agra (802 km), New Delhi (864 km), Mumbai (1177 km).