Dal Lake डल झील
Dal Lake and the shikaras
Location	Srinagar, Jammu and Kashmir, India
Coordinates	34°07′N 74°52′E / 34.117°N 74.867°E / 34.117; 74.867Coordinates: 34°07′N 74°52′E / 34.117°N 74.867°E / 34.117; 74.867
Lake type	Warm monomictic
Primary inflows	Inflow Channel Telbal from Jhelum River -291.9 million cubic metres
Primary outflows	Regulated, two channels (Dal Gate and Nalla Amir) - 275.6 million cubic metres
Catchment area	316 square kilometres (122 sq mi)
Basin countries	India
Max. length	7.44 km (4.62 mi)
Max. width	3.5 km (2.2 mi)
Surface area	18–22 square kilometres (6.9–8.5 sq mi)
Average depth	1.42 metres (4.7 ft)
Max. depth	6 m (20 ft)
Water volume	983 million cubic metres
Residence time	22.16 days
Shore length1	15.5 km (9.6 mi)
Surface elevation	1,583 m (5,194 ft)
Frozen	During severe winter
Islands	Two (Sona Lank and Rupa Lank (or Char Chinari)
Settlements	Hazratbal, Srinagar
1 Shore length is not a well-defined measure.

Dal Lake is a lake in Srinagar, the summer capital of Jammu and Kashmir. The urban lake, which is the second largest in the state, is integral to tourism and recreation in Kashmir and is nicknamed the "Jewel in the crown of Kashmir"^[1] or "Srinagar's Jewel".^[2] The lake is also an important source for commercial operations in fishing and water plant harvesting.^[3][4][5]

The shore line of the lake, about 15.5 kilometres (9.6 mi), is encompassed by a boulevard lined with Mughal era gardens, parks, houseboats and hotels. Scenic views of the lake can be witnessed from the shore line Mughal gardens, such as Shalimar Bagh and Nishat Bagh built during the reign of Mughal Emperor Jahangir) and from houseboats cruising along the lake in the colourful shikaras.^[6] During the winter season, the temperature sometimes reaches −11 °C (12 °F), freezing the lake.^[5][7]

The lake covers an area of 18 square kilometres (6.9 sq mi) and is part of a natural wetland which covers 21.1 square kilometres (8.1 sq mi), including its floating gardens. The floating gardens, known as "Rad" in Kashmiri, blossom with lotus flowers during July and August. The wetland is divided by causeways into four basins; Gagribal, Lokut Dal, Bod Dal and Nagin (although Nagin is also considered as an independent lake). Lokut-dal and Bod-dal each have an island in the centre, known as Rup Lank (or Char Chinari) and Sona Lank respectively.^[7][8]

At present, the Dal Lake and its Mughal gardens, Shalimar Bagh and the Nishat Bagh on its periphery are undergoing intensive restoration measures to fully address the serious eutrophication problems experienced by the lake. Massive investments of around US $275 million (Rs 1100 crores) is being made by the Government of India to restore the lake to its original splendour.^{[5][7][8][9][10]}

History[link]

Dal Lake Srinagar

Dal lake is mentioned as Mahasarit (Sanskrti-महासरित्) in ancient Sanskrit texts. Ancient history records mention that a village named Isabar to the east of Dal Lake was the residence of goddess Durga.^[11] This place was known as Sureshwari on the bank of the lake, which was sourced by a spring called the Satadhara.^[11]

During the Mughal period, the Mughal rulers of India designated Kashmir, Srinagar in particular, as their summer resort.^[2][12] They developed the precincts of the Dal lake in Srinagar with sprawling Mughal-type gardens and pavilions as pleasure resorts to enjoy the salubrious cool climate.^[2] After the death of Aurangzeb in 1707, which led to the disintegration of the Mughal Empire,^[13] Pashtun tribes in the area around the lake and city increased, and the Durrani Empire ruled the city for several decades.^[14] In 1814 a significant part of the Kashmir valley, including Srinagar, was annexed by Raja Ranjit Singh to his kingdom, and the Sikhs grew in influence in the region for 27 years.^[15][16]

Nishat Bagh Mughal Gardens

During the British Raj, the British also made Srinagar their capital during the summer months, attracted by the cool climate of the Kashmir valley, amidst the back drop of the majestic snow covered Himalayan ranges. The lake precincts experience temperatures in the range of 1–11 °C (34–52 °F) during winter and 12–30 °C (54–86 °F) during the summer season. The lake freezes when temperatures drop to about −11 °C (12 °F) during severe winter.^[5] Although the Dogra Maharaja of Kashmir restricted the building of houses in the valley, the British circumvented this rule by commissioning lavish houseboats to be built on the Dal Lake. The houseboats have been referred to as, "each one a little piece of England afloat on Dal Lake."^[2]

After the independence of India, the Kashmiri Hanji people have built, owned and maintained these houseboats, cultivating floating gardens and producing commodities for the market, making them the centre of their livelihoods. The houseboats, closely associated with Dal Lake also provide accommodation in Srinagar. Following the Mughal and British rule, the place has became a haven for tourists and earned the epithet, "Jewel in the tourist crown".^[17][18][19]

Physical properties[link]

Topography[link]

A sunset view

The lake is located within a catchment area covering 316 square kilometres (122 sq mi) in the Zabarwan mountain valley, in the foothills of the Himalayan range, which surrounds it on three sides. The lake, which lies to the east and north of Srinagar city covers an area of 18 square kilometres (6.9 sq mi), although including the floating gardens of lotus blooms, it is 21.2 square kilometres (8.2 sq mi) (an estimated figure of 22–24 square kilometres (8.5–9.3 sq mi) is also mentioned).^[4][5][20] The main basin draining the lake is a complex of five interconnected basins with causeways; the Nehru Park basin, the Nishat basin, the Hazratbal basin, the Nagin basin and the Barari Nambad basin. Navigational channels provide the transportation links to all the five basins.^[4][5][20]

The average elevation of the lake is 1,583 metres (5,194 ft). The depth of water varies from 6 metres (20 ft) at its deepest in Nagin lake to 2.5 metres (8.2 ft), the shallowest at Gagribal. The depth ratio between the maximum and minimum depths varies with the season between 0.29 and 0.25, which is interpreted as flat bed slope.^[4][5][21] The length of the lake is 7.44 kilometres (4.62 mi) with a width of 3.5 kilometres (2.2 mi).^[4][5][21] The lake has a shore length of 15.5 kilometres (9.6 mi) and roads run all along the periphery. Irreversible changes through urban expansion and road building have been made along the shore line to accommodate for dramatic tourist growth. Two islands built in the basin have placed further restrictions on the flow of the lake and as a result, marshy lands have emerged on the peripheral zones, notably in the foothill areas of the Shankaracharya and Zaharbwan hills. These marshy lands have since been reclaimed and converted into large residential complexes.

Geology[link]

Two theories for the formation of the lake have been formulated. One version is that it is the remnants of a post-glacial lake, which has undergone drastic changes in size over the years and the other theory is that it is of fluvial origin from an old flood spill channel or ox-bows of the Jhelum River.^[6][21] The dendritic drainage pattern of the catchment signifies that its rock strata have low levels of porosity. Lithologically, a variety of rock types have been discerned namely, igneous, metamorphic and sedimentary. The Dachigam Telbal Nallah system is conjectured to follow two major lineaments. Discontinuous surfaces seen in the terrain are attributed to the angular and parallel drainage pattern. The water table cuts the hill slopes, which is evidenced by the occurrence of numerous springs in the valley. Seismic activity in the valley is recorded under Zone V of the Seismic Zoning Map of India, the most severe zone where frequent damaging earthquakes of intensity IX could be expected. In the year 2005, Kashmir valley experienced one of the severe earthquakes measured at 7.6 on the Richter's scale, which resulted in deaths and the destruction of many properties, leaving many homeless.^[10][22]

Hydrology[link]

The shallow, open-drainage lake is fed by Dachigam-Telbal Nallah (with perennial flow), Dara Nallah ('Nallah' means "stream") and many other small streams. The lake is classified as 'warm monomictic' under the sub-tropical lake category. Spring sources also contribute to the flow, although no specific data is available to quantify their contribution. To address this, water balance studies to analyse and assess the characteristics of flow have been conducted in order to approximate the discharge contributed by the springs in the lake bed. The complex land use pattern of the valley is reflected in the urbanised Srinagar in its north, with rice fields, orchards and gardens in the lower slopes, and barren hills beyond steep sloping hills. The flat topography also has an impact on drainage conditions. It receives an average annual rainfall of 655 millimetres (25.8 in) in the catchment, but during the summer, snow melt from the higher ranges of the catchment results in large inflows into the lake.^[4][5][23] The maximum flood discharge of Telbal Nallah has been assessed as 141.5 metres³/s for a one in hundred return period; the 1973 observed flood in Telbal Nallah has been estimated as 113 metres³/s.^[24] The average annual flow, according to discharge measurements, has been estimated as 291.9 million cubic metres, with Telbal Nalah accounting for 80% of the total and 20% contributed by other sources. There are two outlets from the lake, namely the Dalgate and Amir Khan Nallah that connects the lakes of Nagin and Anchar. Dalgate is controlled by a weir and lock system. The outflow from these two outlets has been estimated as 275.6 million cubic metres. Further, the silt load has been estimated at 80,000 tonnes per year with 70% contribution from the Telabal nallah, with 36,000 tonnes recorded as settling in the lake.^[23]

Flora and fauna[link]

Left: Dal Lake lily pads. Right: Nelumbo nucifera widely grown in the floating gardens of Dal Lake

The ecosystem of Dal Lake is ecologically rich in macrophytes, submerged macrophytes, floating macrophytes and phytoplankton.^[4][25][26] Macrophyte flora recorded in the lake's aquatic and marshland environment consists of 117 species, belonging to 69 genera and 42 families.^[27] The lake is noted in particular for its Nelumbo nucifera (lotus flowers) which bloom in July and August. The prolific growth of Ceratophyllum demersum in the eutrophic zones has been reported, with Myriophyllum spicatum and Potemogetton lucens cited as dominant species. Other macrophytes discerned in different zones of the lake include Typho angustata, Phragmites australis, Myriophyllum, Sparganium evectum and Myriophyllum verticillatum, which contribute to the production of macrophites. The rooted variety of the floating leaf type consists of Neelambium nucifera, Nymphaea alba, N.Tertagonia, N.Candida, Nymphoides peltatum, Salvinia natans, Hydrocharis dubia, Nymphaea sp. and Potamogeton natans, all of which occupy 29.2% of the lake.^[4][28] Phytoplanktons include Navicula radiosa, Nitzschia accicularis, Fragilaria crotonensis, Diatoma elongatum, Scenedesmus bijuga, Pediastrum duplex, Tetraedron minimum, Microcystis aeruginosa and Merismopedia elegans.

Since 1934, some important changes have been observed in the lake's biota, including a reduction in the number of Chara species, and an increase in the area covered by Salvinia since 1937. Analysis of the lake has also revealed the tendency for it to develop monospecific communities of submerged macrophytes such as Ceratophyllum and Myriophyllum.

		Left: Floating gardens in Dal Lake. Right: Char Chinar (Four Chinar Trees) seen on an island in Dal Lake
Left: Floating gardens in Dal Lake. Right: Char Chinar (Four Chinar Trees) seen on an island in Dal Lake

Woody vegetation in the catchment of the lake consists of Melia, Ailanthus, Robinia, Daphne, Celtis, Rose, Ephedra, Pinus roxburghii, Pinus halepensis, Pinus gerardiana, Cupressus torulosa and Cupressus arizonica. The valley also has a rich cultivation of crops such as paddy, wheat and fodder.^[4]

Floating gardens, labelled the 'Rad' in tye Kashmiri language are a special feature of the lake. They basically constitute of matted vegetation and earth, but are floating. These are detached from the bottom of the lake and drawn to a suitable place (generally to the north west of the houseboats' location) and anchored. Given its rich nutrient properties, tomatoes, cucumbers and melons are grown with noteworthy results.^[26]

The faunal distribution consists of Zooplanktons, Benthos and Fish.^[4] Zooplankton found in the lake include Keratella cochlearis, K. serrulata, Polyactis vulgaris, Brachionus plicatilis, Monostyla bulla, Alona monocantha, Cyclops ladakanus and Mesocyclops leukarti. Benthos include Chironomus sp. and Tubifex sp. and fish include Cyprinus carpio specularis (economically important), C. carpio communis, Schizothorax niger, S. esocinus, S. curviformis and Crossochelius latius. It is also reported that Cyprinus, introduced during early sixties, is dominant and that the indigenous species Schizothorax is showing a declining trend.^[4]

Fishing resources

The fishing industry on Dal Lake is the second largest industry in the region and is central to many of the people's livelihoods who reside on the lake's periphery.^[29] Dal lake's commercial fisheries are particularly reliant on carp fish species, which were introduced into the lake in 1957. As a result, carp constitutes 70% of all the fish caught in the lake while the schizothonax constitutes 20% and other species account for 10%. Fishermen use a locally manufactured cast net which comprises six parts with a diameter of 6 metres. It is operated from a wooden fishing boat made out of deodar, typically 20ftx4ft in size. The gradual decline in quality of the lake water through pollution has resulted in lower fish stocks and the extinction of endemic varieties of fish. The causes for such deterioration have been identified and remedial actions have been initiated.^[30]

Environmental issues[link]

The lake is warm monomictic (mixing type) and the pH value recorded has varied from a minimum of 7.2 to a maximum of 8.8 on the surface over a yearly period.^[4] The Dissolved oxygen [mg l⁻¹] value has varied from a minimum of 1.4 to a maximum of 12.3 on the surface within a year. The Recorded maximum nitrogen concentration (NH₄-N [micro l⁻¹] has been recorded as 1315 on the surface and 22 at the bottom of the lake.^[4] Phosphorus concentration expressed in Total-P [micro l⁻¹] has varied from a high of 577 to a low of 35 during the 12 months of the year.^[4] The lake water temperature has varied from a minimum of 3 °C (37 °F) in January to 26 °C (79 °F) in June at the surface. Transparency, expressed as depth in metres, has varied from a maximum of 1.95 metres (6.4 ft) in July to a minimum of 0.53 metres (1.7 ft) in March, over the 12 months period.^[4]

Studies of the water quality of the lake in 1983–84 indicate a decline in quality since the 1965–66 analysis.^[4] Scientific research over the years also reveal that Telbal, Botkal, and sewage drains are responsible for a substantial influx of nitrogen and phosphorus into the lake. Quantitatively, fifteen drains and several other sources have released a total of 156.62 tonnes (56.36 tonnes by drains alone) of phosphorus, and 241.18 tonnes of inorganic nitrogen into the lake from a discharge of 11.701 million cubic metres /year.^[31] Non-point sources, such as seepage and diffused runoff, also add to this pollution and have been recorded as further adding 4.5 tonnes of total phosphates and 18.14 tonnes of nitrogen (NO₃–N and NH₄–N) to the lake.^[31] Based on the values mentioned above, it has been inferred that the water quality of the lake has deteriorated.

Panoramic view of the Dal Lake

The major environmental problem facing the lake is eutrophication, which has required immediate remedial measures to combat it. Alarmingly, the size of the lake has shrunk from its original area of 22 square kilometres (8.5 sq mi) to the present area of 18 square kilometres (6.9 sq mi), and there is a concerning rate of sediment deposition due to catchment area degradation.^[4] The water quality has also deteriorated due to intense pollution caused by the untreated sewage and solid waste that is fed into the lake from the peripheral areas and from the settlements and houseboats. Besides, some experts like Dr. A.A. Kazmi (Associate Professor, IIT Roorkee and in charge of the Environmental Engineering Lab) believe that deforestation in the catchment of Dal Lake and Telbal stream may have led to more nitrogen and phosphorus-rich run-off, further aiding eutrophication. Encroachments of water channels and consequent clogging has diminished the circulation and inflows into the lake, so with the building up of phosphates and nitrogen, this has led to extensive weed growth and consequences on the biodiversity of the lake.^[4][6]

Public Interest Litigations and restoration works[link]

Identifying the above major issues as causes for the deterioration of the lake, a multidisciplinary team of experts have prepared a Detailed Project Report (DPR), a responsible management plan entitled "Conservation and Management of Dal Lake", which has the objective of achieving environment compatibility, cost effectiveness and sustainability, ecological improvement with minimum interventions and displacement and balancing the conflicts of interest. This plan is now under implementation with the financial assistance of the Government of India.^[4][6]

The serious nature of the environmental problems the lake has been experienced has been widely publicised and has been brought to the attention of the Supreme Court of India. Public Interest Litigations (PILs) have been filed in court demonstrating the environmental dangers posed to the lake by sewage, wastes and effluents. The PILs have sought injunctions of the court for setting up of an integrated ring sewage system encircling the Lake; release of funds by the Government of India to undertake measures to check pollution and to inaugurate a High Powered Committee to monitor proper utilisation of the allotted funds. The committee is under obligation to post feedback of progression developments from time to time, directly to the Supreme Court. The PIL, filed in 2001, has resulted in a number of directives from the court to the funding and implementing agencies and the case is continuing. Consequently, under the National Lake Conservation Plan of the Ministry of Environment and Forests of the Government of India, funds to the extent Rs 298.76 crore were sanctioned in September 2005 for the conservation of the lake.^[9] The restoration and rehabilitation measures envisaged under the "Conservation and Management of Dal Lake" are under various stages of implementation with the funds allocated by the Government of India for the purpose. Some of the measures undertaken for rehabilitating the lake to bring it to its original eutrophication free status involved measures such as construction of siltation tanks, mechanical deweeding, regrouping of houseboats, deepening of outflow channel and removal of bunds and barricades, including some floating gardens.^[4] In addition, a moratorium has been imposed on new construction works close to the lakefront, including the building of new house boats. Resettlement plans for migrating the population from the lakefront have also evolved.^[4] The long-term development plans also deal with the reafforestation of catchment area to reduce erosion movement and movement of silt and to regulate grazing by livestock. Recent reports indicate that, as of 2010, 40% of the measures have been implemented.^[8]

Dal Lake is a busy commercial spot

Uses and attractions[link]

The lake is popular as a visitor attraction and a summer resort. Fisheries and the harvesting of food and fodder plants are also important on Dal Lake.^[4] Weeds from the lake are extracted and converted into compost for the gardens. It also serves as a flood lung of the Jhelum River.^[26] Swimming, boating, snow skiing (particularly when the lake is frozen during the severe winter), and canoeing are amongst some of the water sports activities practised on the lake.

The lake has numerous sites and places of interest, many of which are important to the cultural heritage of Srinigar. Aside from the Shalimar Bagh and Nishat Bagh, some of the other places frequented by tourists are the Shankaracharya temple, the Hari Parbat, the Nagin Lake, the Chashme Shahi, the Hazratbal Shrine, the famous Kashmir houseboat and the shikara (boat) called the Gandola of Kashmir.

Island of Char Chinar[link]

A famous landmark in Srinagar is an island on Dal Lake where four Chinar (Platanus orientalis) trees stand, named "Char Chinar". Char in Hindi and Urdu means four.

Nagin Lake[link]

		Left: Nagin Lake. Right: Chasme Shahi under renovation
Left: Nagin Lake. Right: Chasme Shahi under renovation

Nagin Lake, though sometimes referred to as a separate lake, is actually part of Dal Lake, being linked through a causeway which permits only bikers and walkers to enter the lake precincts. The caseway carries the water supply pipeline to the Srinagar city in the east. The lake is bounded by the Shankaracharya hill (Takht-e-Suleiman) on the south and Hari Parbat on the west and is located at the foot of the Zabarwan hills. Willow and poplar trees flank the edges of the lake.^[26][32]

Chashme Shahi[link]

Cheshme Shahi Garden Srinagr

Chashme Shahi, meaning "Royal Spring", is a fresh water spring and garden known for its medicinal properties. Its source located above the Nehru Memorial Park. It is the smallest of all the Mughal gardens in Srinagar, measuring 108 metres (354 ft) x 38 metres (125 ft) and it has three terraces, an aqueduct, waterfalls and fountains.^[32] Ali Mardan Khan built the garden in 1632, and is built in a such a way that the spring water is the source of fountains. From the fountains, water flows along the floor of the pavilion and cascades to a lower terrace over a drop of 5 metres (16 ft) along a polished black stone chute. A small shrine, known as the Chasma Sahibi, is located in the vicinity of the gardens and has a fresh water spring.^[32]

Shankaracharya Temple[link]

Left: Shankaracharya Temple built in 220 BC. as seen in 1868. Right: Shankaracharya temple as seen now -Overlooks Dal Lake

The sacred Shankaracharya temple, also known as Jyeshteswara, occupies the top of the hills (about 1,000 feet (300 m) above the surrounding Takht-I-Sulaiman plains in the south-east of Srinagar. The site, initially named Gopadri, dates back to 250 BC as a Buddhist monument, probably built by Emperor Ashoka's son Jhaloka. In the 7th century it was replaced by the present temple by King Lalitaditya. The philosopher Shankaracharya is documented as having stayed at this place when he visited Kashmir ten centuries ago to revive Sanātana Dharma.^[32][33]

Built on a high octagonal plinth (20 feet (6.1 m) high) on solid rock and approached by a flight of steps with side walls that once bore inscriptions, the main surviving shrine consists of square building with a circular cell. It overlooks the Srinagar valley and can be approached by car. A modern ceiling covers the inner sanctum and a Persian inscription traces its origin to the reign of Emperor Shah Jahan. There is also a Shiva Linga coiled by a serpent, located in a basin inside the sanctum. The original ceiling was dome-shaped and the current brick roof is said to be about a century old.^[32][33]

Hari Parbat[link]

		Left: Hari Parbat as seen from Badam Weer (Almond Garden), Srinagar. Right: View of the temple from the stairs
Left: Hari Parbat as seen from Badam Weer (Almond Garden), Srinagar. Right: View of the temple from the stairs

Hari Parbat, also known as the Mughal fort, is a hill fort on Sharika hill that provides panoramic views of the Srinagar city and the Dal Lake. It was first established by Mughal Emperor Akbar in 1590. However, he only erected the outer wall of the fort and his plans to build a new capital called Naga Nagor within it did not materialise. The fort in its current state was built much later in 1808 under the reign of Shuja Shah Durrani. Within the fort's precincts are temples, Muslim shrines, and a sikh Gurudwara. The hill is the subject of many legends in Hindu mythology, and was said to have once been a large sea, inhabited by a demon known as Jalobhava and that the hill grew from a pebble.^[32][34]

Kashmir houseboat and shikara[link]

		Left: Houseboats, the floating luxury hotels in Dal Lake Right: Houseboats moored to the bank
Left: Houseboats, the floating luxury hotels in Dal Lake Right: Houseboats moored to the bank

Houseboats and the Dal Lake are widely associated with Srinigar and are nicknamed "floating palaces", built according to British customs. The houseboats are generally made from local cedar-wood and measure 24–38 metres (79–125 ft) in length and 3–6 metres (9.8–20 ft) in width and are graded in a similar fashion to hotels according to level of comfort.^[35] Many of them have lavishly furnished rooms, with verandas and a terrace to serve as a sun-deck or to serve evening cocktails. They are mainly moored along the western periphery of the lake, close to the lakeside boulevard in the vicinity of the Dal gate and on small islands in the lake. They are anchored individually, with interconnecting bridges providing access from one boat to the other. The kitchen-boat is annexed to the main houseboat, which also serves as residence of the boatkeeper and his family.

		Left: Shikara on Dal Lake. Right: A florist's shikara boat in Nageen Lake
Left: Shikara on Dal Lake. Right: A florist's shikara boat in Nageen Lake

Each houseboat has an exclusive shikara for ferrying guests to the shore.^[36] A shikara is small paddled taxi boat, often about 15 feet (4.6 m) long) and made of wood with a canopy and a spade shaped bottom. It is the cultural symbol of Kashmir and is used not only for ferrying visitors but is also used for the vending of fruits, vegetables and flowers and for the fishing and harvesting of aquatic vegetation.^[36] All gardens in the lake periphery and houseboats anchored in the lake are approachable through shikaras. The boats are often navigated by two boatmen dressed in "Phiron" (traditional dress) and carry 'Kangris' or portable heaters on the boat. A shikara can seat about six people and have heavily cushioned seats and backrests to provide comfort in Mughul style. All houseboat owners provide shikara transport to their house guests free of charge. The shikara is also used to provide for other sightseeing locations in the valley, notably a cruise along the Jhelum River, offering scenic views of the Pir Panjal mountains and passing through the famous seven bridges and the backwaters enroute.^[35][37]

Hazratbal Shrine[link]

The Hazratbal Shrine Urdu: حضرت بل, literally: Majestic Place), also named Hazratbal, Assar-e-Sharief, Madinat-us-Sani, or simply Dargah Sharif,^[38] is a Muslim shrine situated on the left bank of the Dal Lake and is considered to be Kashmir's holiest Muslim shrine.^[39] It contains a relic believed by many Kashmiri Muslims to be the Moi-e-Muqqadas, a hair from the head of the Islamic prophet Muhammad. According to legend, the relic was first brought to India by Syed Abdullah, a descendant of Muhammad who left Medina and settled in Bijapur, near Hyderabad in 1635. When Syed Abdullah died, his son, Syed Hamid, inherited the relic. Following the Mughal conquest of the region, Syed Hamid was stripped of his family estates. Finding himself unable to care for the relic, he gave it as the most precious gift to his close Mureed and a wealthy Kashmiri businessman, Khwaja Nur-ud-Din Ishbari.

Transport connections[link]

Dal Lake lies in heart of the Srinagar city and is well connected by road and air links. The nearest airport, which connects with other major cities in the country, is about 7 kilometres (4.3 mi) away at Badgam. The nearest railway station is 300 kilometres (190 mi) away at Jammu. The National Highway NH1A connects the Kashmir valley with rest of the country. Shikaras provide a water taxi service available to see the sights in the Dal Lake and to approach the houseboats moored on the lake periphery.^[40]

See also[link]

• Dal in Himachal
• Nishat Bagh
• Gangabal Lake
• Gadsar Lake
• Manasbal Lake
• Shalimar Bagh (Srinagar)
• Wular Lake

References[link]

Notes[link]

Sources[link]

• Pandit, Ashok K. (1999). Freshwater ecosystems of the Himalaya. Informa Health Care. ISBN 1-85070-782-0. http://books.google.com/books?id=pI8YGfLOT7YC&pg=PA72&lpg=PA72&dq=Hydrology+of+Dal+Lake&source=bl&ots=8awwqxKEad&sig=lfKUt0tskm0ARfbmcbqlnB61vJY&hl=en&ei=ccUxS4bVO8GTkAXi4r2ECQ&sa=X&oi=book_result&ct=result&resnum=2&ved=0CA8Q6AEwAQ#v=onepage&q=Hydrology%20of%20Dal%20Lake&f=false. Retrieved 2009-12-27. 

External links[link]

Wikimedia Commons has media related to: Dal Lake

• Dal Lake photoblog from bRaNdSboRg.CoM

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Oeschinen Lake in the Swiss Alps

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land apart from a river, stream, or other form of moving water that serves to feed or drain the lake. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds.^[1][2] Lakes can be contrasted with rivers or streams, which are usually flowing. However most lakes are fed and drained by rivers and streams.

Natural lakes are generally found in mountainous areas, rift zones, and areas with ongoing glaciation. Other lakes are found in endorheic basins or along the courses of mature rivers. In some parts of the world there are many lakes because of chaotic drainage patterns left over from the last Ice Age. All lakes are temporary over geologic time scales, as they will slowly fill in with sediments or spill out of the basin containing them.

Many lakes are artificial and are constructed for industrial or agricultural use, for hydro-electric power generation or domestic water supply, or for aesthetic or recreational purposes.

Etymology, meaning, and usage of "lake"[link]

Lake Tahoe on the border of California and Nevada

The Caspian Sea is either the world's largest lake or a full-fledged sea.^[3]

The word lake comes from Middle English lake ("lake, pond, waterway"), from Old English lacu ("pond, pool, stream"), from Proto-Germanic *lakō ("pond, ditch, slow moving stream"), from the Proto-Indo-European root *leg'- ("to leak, drain"). Cognates include Dutch laak ("lake, pond, ditch"), Middle Low German lāke ("water pooled in a riverbed, puddle"), German Lache ("pool, puddle"), and Icelandic lækur ("slow flowing stream"). Also related are the English words leak and leach.

There is considerable uncertainty about defining the difference between lakes and ponds, and no current internationally accepted definition of either term across scientific disciplines or political boundaries exists.^{[citation needed]} For example, limnologists have defined lakes as water bodies which are simply a larger version of a pond, which can have wave action on the shoreline or where wind-induced turbulence plays a major role in mixing the water column. None of these definitions completely excludes ponds and all are difficult to measure. For this reason there has been increasing use made of simple size-based definitions to separate ponds and lakes. One definition of lake is a body of water of 2 hectares (5 acres) or more in area,^[4]:331[5] however others^[who?] have defined lakes as waterbodies of 5 hectares (12 acres) and above,^{[citation needed]} or 8 hectares (20 acres) and above^{[citation needed]} (see also the definition of "pond"). Charles Elton, one of the founders of ecology, regarded lakes as waterbodies of 40 hectares (99 acres) or more.^[6] The term lake is also used to describe a feature such as Lake Eyre, which is a dry basin most of the time but may become filled under seasonal conditions of heavy rainfall. In common usage many lakes bear names ending with the word pond, and a lesser number of names ending with lake are in quasi-technical fact, ponds.

In lake ecology the environment of a lake is referred to as lacustrine. Large lakes are occasionally referred to as "inland seas," and small seas are occasionally referred to as lakes, such as Lake Maracaibo, which is actually a bay.

Distribution of lakes[link]

The Seven Rila Lakes are a group of glacial lakes in the Bulgarian Rila mountains.

Wayanad District Kerala India

The majority of lakes on Earth are fresh water, and most lie in the Northern Hemisphere at higher latitudes. Canada, with a deranged drainage system has an estimated 63,504 lakes.^[7] Finland has 187,888 lakes of which 60,000 are large.^[8]

Most lakes have at least one natural outflow in the form of a river or stream, which maintain a lake's average level by allowing the drainage of excess water.^[9] Some lakes do not have a natural outflow and lose water solely by evaporation or underground seepage or both. They are termed endorheic lakes.

Many lakes are artificial and are constructed for hydro-electric power generation, aesthetic purposes, recreational purposes, industrial use, agricultural use or domestic water supply.

Evidence of extraterrestrial lakes exists; "definitive evidence of lakes filled with methane" was announced by NASA^{[citation needed]} as returned by the Cassini Probe observing the moon Titan, which orbits the planet Saturn.

Globally, lakes are greatly outnumbered by ponds: of an estimated 304-million standing water bodies worldwide, 91 percent are 1 hectare (2.5 acres) or less in area (see definition of ponds).^[10] Small lakes are also much more numerous than large lakes: in terms of area, one-third of the world's standing water is represented by lakes and ponds of 10 hectares (25 acres) or less.^{[citation needed]} However, large lakes account for much of the area of standing water with 122 large lakes of 1,000 square kilometres (390 sq mi, 100,000 ha, 247,000 acres) or more representing about 29 percent of the total global area of standing inland water.^{[citation needed]}

Origin of natural lakes[link]

A portion of the Great Salt Lake in Utah, United States

Salt crystals, on the shore of Lake Urmia, Iran

There are a number of natural processes that can form lakes. A recent tectonic uplift of a mountain range can create bowl-shaped depressions that accumulate water and form lakes. The advance and retreat of glaciers can scrape depressions in the surface where water accumulates; such lakes are common in Scandinavia, Patagonia, Siberia and Canada. The most notable examples are probably the Great Lakes of North America.

Lakes can also form by means of landslides or by glacial blockages. An example of the latter occurred during the last ice age in the U.S. state of Washington, when a huge lake formed behind a glacial flow; when the ice retreated, the result was an immense flood that created the Dry Falls at Sun Lakes, Washington.

Salt lakes (also called saline lakes) can form where there is no natural outlet or where the water evaporates rapidly and the drainage surface of the water table has a higher-than-normal salt content. Examples of salt lakes include Great Salt Lake, the Aral Sea and the Dead Sea.

Small, crescent-shaped lakes called oxbow lakes can form in river valleys as a result of meandering. The slow-moving river forms a sinuous shape as the outer side of bends are eroded away more rapidly than the inner side. Eventually a horseshoe bend is formed and the river cuts through the narrow neck. This new passage then forms the main passage for the river and the ends of the bend become silted up, thus forming a bow-shaped lake.

Crater lakes are formed in volcanic craters and calderas which fill up with precipitation more rapidly than they empty via evaporation. Sometimes the latter are called caldera lakes, although often no distinction is made. An example is Crater Lake in Oregon, located within the caldera of Mount Mazama. The caldera was created in a massive volcanic eruption that led to the subsidence of Mount Mazama around 4860 BC.

Gloe Lakes are freshwater lakes that have emerged when the water they consists of has been separated, not considerably long before, from the sea as a consequence of post-glacial rebound.

Some lakes, such as Lake Jackson in Florida, USA, come into existence as a result of sinkhole activity.

Lake Vostok is a subglacial lake in Antarctica, possibly the largest in the world. The pressure from the ice atop it and its internal chemical composition mean that, if the lake were drilled into, a fissure could result that would spray somewhat like a geyser.

Most lakes are geologically young and shrinking since the natural results of erosion will tend to wear away the sides and fill the basin. Exceptions are those such as Lake Baikal and Lake Tanganyika that lie along continental rift zones and are created by the crust's subsidence as two plates are pulled apart. These lakes are the oldest and deepest in the world. Lake Baikal, which is 25-30 million years old, is deepening at a faster rate than it is being filled by erosion and may be destined over millions of years to become attached to the global ocean. The Red Sea, for example, is thought to have originated as a rift valley lake.

Types of lakes[link]

Many lakes can have tremendous cultural importance. The West Lake of Hangzhou has inspired romantic poets throughout the ages, and has been an important influence on garden designs in China, Japan and Korea.^[11]

One of the many artificial lakes in Arizona at sunset.

The crater lake of Volcán Irazú, Costa Rica.

These kettle lakes in Alaska were formed by a retreating glacier.

Ephemeral 'Lake Badwater', a lake only noted after heavy winter and spring rainfall, Badwater Basin, Death Valley National Park.

• Periglacial lake: Part of the lake's margin is formed by an ice sheet, ice cap or glacier, the ice having obstructed the natural drainage of the land.
• Subglacial lake: A lake which is permanently covered by ice. They can occur under glaciers, ice caps or ice sheets. There are many such lakes, but Lake Vostok in Antarctica is by far the largest. They are kept liquid because the overlying ice acts as a thermal insulator retaining energy introduced to its underside by friction, by water percolating through crevasses, by the pressure from the mass of the ice sheet above or by geothermal heating below.
• Glacial lake: a lake with origins in a melted glacier, such as a kettle lake.
• Artificial lake: A lake created by flooding land behind a dam, called an impoundment or reservoir, by deliberate human excavation, or by the flooding of an excavation incident to a mineral-extraction operation such as an open pit mine or quarry. Some of the world's largest lakes are reservoirs like Hirakud Dam in India.
• Endorheic lake, terminal or closed: A lake which has no significant outflow, either through rivers or underground diffusion. Any water within an endorheic basin leaves the system only through evaporation or seepage. These lakes, such as Lake Eyre in central Australia or the Aral Sea in central Asia, are most common in desert locations.
• Meromictic lake: A lake which has layers of water which do not intermix. The deepest layer of water in such a lake does not contain any dissolved oxygen. The layers of sediment at the bottom of a meromictic lake remain relatively undisturbed because there are no living aerobic organisms.
• Fjord lake: A lake in a glacially eroded valley that has been eroded below sea level.
• Oxbow lake: A lake which is formed when a wide meander from a stream or a river is cut off to form a lake. They are called "oxbow" lakes due to the distinctive curved shape that results from this process.
• Rift lake or sag pond: A lake which forms as a result of subsidence along a geological fault in the Earth's tectonic plates. Examples include the Rift Valley lakes of eastern Africa and Lake Baikal in Siberia.
• Underground lake: A lake which is formed under the surface of the Earth's crust. Such a lake may be associated with caves, aquifers or springs.
• Crater lake: A lake which forms in a volcanic caldera or crater after the volcano has been inactive for some time. Water in this type of lake may be fresh or highly acidic, and may contain various dissolved minerals. Some also have geothermal activity, especially if the volcano is merely dormant rather than extinct.
• Lava lake: A pool of molten lava contained in a volcanic crater or other depression. Lava lakes that have partly or completely solidified are also referred to as lava lakes.
• Former: A lake which is no longer in existence. Such lakes include prehistoric lakes and lakes which have permanently dried up through evaporation or human intervention. Owens Lake in California, USA, is an example of a former lake. Former lakes are a common feature of the Basin and Range area of southwestern North America.
• Ephemeral lake, intermittent lake, or seasonal lake: A seasonal lake that exists as a body of water during only part of the year.
• Shrunken: Closely related to former lakes, a shrunken lake is one which has drastically decreased in size over geological time. Lake Agassiz, which once covered much of central North America, is a good example of a shrunken lake. Two notable remnants of this lake are Lake Winnipeg and Lake Winnipegosis.
• Eolic lake: A lake which forms in a depression created by the activity of the winds.
• Vlei, in South Africa, shallow lakes which vary considerably with seasons.
• Epitshelf Lakes, unique lakes which exist on top of a dense saltwater body and are surrounded by ice. These are mostly found in the Arctic.

Characteristics[link]

Lake Päijänne is one of tens of thousands of lakes in Finnish Lakeland.

Lake Mapourika, New Zealand

Lakes have numerous features in addition to lake type, such as drainage basin (also known as catchment area), inflow and outflow, nutrient content, dissolved oxygen, pollutants, pH, and sedimentation.

Changes in the level of a lake are controlled by the difference between the input and output compared to the total volume of the lake. Significant input sources are precipitation onto the lake, runoff carried by streams and channels from the lake's catchment area, groundwater channels and aquifers, and artificial sources from outside the catchment area. Output sources are evaporation from the lake, surface and groundwater flows, and any extraction of lake water by humans. As climate conditions and human water requirements vary, these will create fluctuations in the lake level.

Lakes can be also categorized on the basis of their richness in nutrients, which typically affect plant growth. Nutrient-poor lakes are said to be oligotrophic and are generally clear, having a low concentration of plant life. Mesotrophic lakes have good clarity and an average level of nutrients. Eutrophic lakes are enriched with nutrients, resulting in good plant growth and possible algal blooms. Hypertrophic lakes are bodies of water that have been excessively enriched with nutrients. These lakes typically have poor clarity and are subject to devastating algal blooms. Lakes typically reach this condition due to human activities, such as heavy use of fertilizers in the lake catchment area. Such lakes are of little use to humans and have a poor ecosystem due to decreased dissolved oxygen.

Due to the unusual relationship between water's temperature and its density, lakes form layers called thermoclines, layers of drastically varying temperature relative to depth. Fresh water is most dense at about 4 degrees Celsius (39.2 °F) at sea level. When the temperature of the water at the surface of a lake reaches the same temperature as deeper water, as it does during the cooler months in temperate climates, the water in the lake can mix, bringing oxygen-starved water up from the depths and bringing oxygen down to decomposing sediments. Deep temperate lakes can maintain a reservoir of cold water year-round, which allows some cities to tap that reservoir for deep lake water cooling.

Lake Teletskoye, Siberia

Since the surface water of deep tropical lakes never reaches the temperature of maximum density, there is no process that makes the water mix. The deeper layer becomes oxygen starved and can become saturated with carbon dioxide, or other gases such as sulfur dioxide if there is even a trace of volcanic activity. Exceptional events, such as earthquakes or landslides, can cause mixing which rapidly brings the deep layers up to the surface and release a vast cloud of gas which lay trapped in solution in the colder water at the bottom of the lake. This is called a limnic eruption. An example is the disaster at Lake Nyos in Cameroon. The amount of gas that can be dissolved in water is directly related to pressure. As deep water surfaces, the pressure drops and a vast amount of gas comes out of solution. Under these circumstances carbon dioxide is hazardous because it is heavier than air and displaces it, so it may flow down a river valley to human settlements and cause mass asphyxiation.

The material at the bottom of a lake, or lake bed, may be composed of a wide variety of inorganics, such as silt or sand, and organic material, such as decaying plant or animal matter. The composition of the lake bed has a significant impact on the flora and fauna found within the lake's environs by contributing to the amounts and the types of nutrients available.

A paired (black and white) layer of the varved lake sediments correspond to a year. During winter, when organisms die, carbon is deposited down, resulting to a black layer. At the same year, during summer, only few organic materials are deposited, resulting to a white layer at the lake bed. These are commonly used to track past paleontological events.

Limnology[link]

Lake Billy Chinook, Deschutes National Forest, Oregon.

Lake Cugun, Kirsehir, Turkey.

Limnology is the study of inland bodies of water and related ecosystems. Limnology divides lakes into three zones: the littoral zone, a sloped area close to land; the photic or open-water zone, where sunlight is abundant; and the deep-water profundal or benthic zone, where little sunlight can reach. The depth to which light can reach in lakes depends on turbidity, determined by the density and size of suspended particles. A particle is in suspension if its weight is less than the random turbidity forces acting upon it. These particles can be sedimentary or biological in origin and are responsible for the color of the water. Decaying plant matter, for instance, may be responsible for a yellow or brown color, while algae may cause greenish water. In very shallow water bodies, iron oxides make water reddish brown. Biological particles include algae and detritus. Bottom-dwelling detritivorous fish can be responsible for turbid waters, because they stir the mud in search of food. Piscivorous fish contribute to turbidity by eating plant-eating (planktonivorous) fish, thus increasing the amount of algae (see aquatic trophic cascade). The light depth or transparency is measured by using a Secchi disk, a 20-cm (8 in) disk with alternating white and black quadrants. The depth at which the disk is no longer visible is the Secchi depth, a measure of transparency. The Secchi disk is commonly used to test for eutrophication. For a detailed look at these processes, see lentic ecosystems.

A lake moderates the surrounding region's temperature and climate because water has a very high specific heat capacity (4,186 J·kg⁻¹·K⁻¹). In the daytime a lake can cool the land beside it with local winds, resulting in a sea breeze; in the night it can warm it with a land breeze.

How lakes disappear[link]

Lake Chad in a 2001 satellite image, with the actual lake in blue, and vegetation on top of the old lake bed in green.

Lake Badwater, February 9, 2005. Landsat 5 satellite photo.

Badwater Basin dry lake, February 15, 2007. Landsat 5 satellite photo.

The lake may be infilled with deposited sediment and gradually become a wetland such as a swamp or marsh. Large water plants, typically totos, accelerate this closing process significantly because they partially decompose to form peat soils that fill the shallows. Conversely, peat soils in a marsh can naturally burn and reverse this process to recreate a shallow lake. Turbid lakes and lakes with many plant-eating fish tend to disappear more slowly. A "disappearing" lake (barely noticeable on a human timescale) typically has extensive plant mats at the water's edge. These become a new habitat for other plants, like peat moss when conditions are right, and animals, many of which are very rare. Gradually the lake closes and young peat may form, forming a fen. In lowland river valleys where a river can meander, the presence of peat is explained by the infilling of historical oxbow lakes. In the very last stages of succession, trees can grow in, eventually turning the wetland into a forest.

Some lakes can disappear seasonally. These are called intermittent lakes, ephemeral lakes, or seasonal lakes and can be found in karstic terrain. A prime example of an intermittent lake is Lake Cerknica in Slovenia or Lag Prau Pulte in Graubünden. Other intermittent lakes are only the result of above-average precipitation in a closed, or endorheic basin, usually filling dry lake beds. This can occur in some of the driest places on earth, like Death Valley. This occurred in the spring of 2005, after unusually heavy rains.^[12] The lake did not last into the summer, and was quickly evaporated (see photos to right). A more commonly filled lake of this type is Sevier Lake of west-central Utah.

Sometimes a lake will disappear quickly. On 3 June 2005, in Nizhny Novgorod Oblast, Russia, a lake called Lake Beloye vanished in a matter of minutes. News sources reported that government officials theorized that this strange phenomenon may have been caused by a shift in the soil underneath the lake that allowed its water to drain through channels leading to the Oka River.^[13]

The presence of ground permafrost is important to the persistence of some lakes. According to research published in the journal Science ("Disappearing Arctic Lakes", June 2005), thawing permafrost may explain the shrinking or disappearance of hundreds of large Arctic lakes across western Siberia. The idea here is that rising air and soil temperatures thaw permafrost, allowing the lakes to drain away into the ground.

Some lakes disappear because of human development factors. The shrinking Aral Sea is described as being "murdered" by the diversion for irrigation of the rivers feeding it.

Extraterrestrial lakes[link]

Titan's north polar hydrocarbon seas and lakes as seen in a false-color Cassini synthetic aperture radar mosaic.

At present the surface of the planet Mars is too cold and has too little atmospheric pressure to permit the pooling of liquid water on the surface. Geologic evidence appears to confirm, however, that ancient lakes once formed on the surface. It is also possible that volcanic activity on Mars will occasionally melt subsurface ice, creating large lakes.^{[citation needed]} Under current conditions this water would quickly freeze and sublimate unless insulated in some manner, such as by a coating of volcanic ash.

Only one world other than Earth is known to harbor lakes, Saturn's largest moon, Titan. Photographs and spectroscopic analysis by the Cassini–Huygens spacecraft show liquid ethane on the surface, which is thought to be mixed with liquid methane.

Jupiter's small moon Io is volcanically active due to tidal stresses, and as a result sulfur deposits have accumulated on the surface. Some photographs taken during the Galileo mission appear to show lakes of liquid sulfur on the surface.^[14]

There are dark basaltic plains on the Moon, similar to lunar maria but smaller, that are called lacus (singular lacus, Latin for "lake") because they were thought by early astronomers to be lakes of water.

Notable lakes[link]

Round Tangle Lake, one of the Tangle Lakes, located 2,864 feet (873 m) above sea level in interior Alaska

• Lake Michigan-Huron is the largest lake by surface area: 117,350 km². It also has the longest lake coastline in the world: 8,790 km. If Huron and Michigan are considered two lakes, Lake Superior is the largest lake, with 82,414 km². However, Huron still has the longest coastline at 6,157 km (2980 km excluding the coastlines of its many inner islands). The world's smallest geological ocean, the Caspian Sea, at 394,299 km² has a surface area greater than the six largest freshwater lakes combined, and it's frequently cited as the world's largest lake.
• The deepest lake is Lake Baikal in Siberia, with a bottom at 1,637 m. Its mean depth is also the greatest in the world (749 m).
  It is also the world's largest lake by volume (23,600 km³, though smaller than the Caspian Sea at 78,200 km³), and the second longest (about 630 km from tip to tip).
• The longest lake is Lake Tanganyika, with a length of about 660 km (measured along the lake's center line).
  It is also the second largest by volume and second deepest (1,470 m) in the world, after lake Baikal.
• The world's oldest lake is Lake Baikal, followed by Lake Tanganyika (Tanzania).
• The world's highest lake, if size is not a criterion, may be the crater lake of Ojos del Salado, at 6,390 metres (20,965 ft).^[15]
• The highest large (greater than 250 square kilometers) freshwater lake in the world is the 290 km² Pumoyong Tso (Pumuoyong Tso), in the Tibet Autonomous Region of China, at 28-34N 90-24E, 5,018 metres (16,463 ft) above sea level.^[16]
• The world's highest commercially navigable lake is Lake Titicaca in Peru and Bolivia at 3,812 m (12,507 ft). It is also the largest freshwater (and second largest overall) lake in South America.
• The world's lowest lake is the Dead Sea, bordering Israel and Jordan at 418 m (1,371 ft) below sea level. It is also one of the lakes with highest salt concentration.
• Lake Huron has the longest lake coastline in the world: about 2980 km, excluding the coastline of its many inner islands.
• The largest island in a freshwater lake is Manitoulin Island in Lake Huron, with a surface area of 2,766 km². Lake Manitou, located on Manitoulin Island, is the largest lake on an island in a freshwater lake.
• The largest lake located on an island is Nettilling Lake on Baffin Island, with an area of 5,542 km² and a maximum length of 123 km.^[17]
• The largest lake in the world that drains naturally in two directions is Wollaston Lake.
• Lake Toba on the island of Sumatra is located in what is probably the largest resurgent caldera on Earth.
• The largest lake located completely within the boundaries of a single city is Lake Wanapitei in the city of Sudbury, Ontario, Canada. Before the current city boundaries came into effect in 2001, this status was held by Lake Ramsey, also in Sudbury.
• Lake Enriquillo in Dominican Republic is the only saltwater lake in the world inhabited by crocodiles.
• Lake Bernard, Ontario, Canada, claims to be the largest freshwater lake in the world with no islands.
• The largest lake in one country is Lake Michigan, in the U.S.A. However, it is sometimes considered part of Lake Michigan-Huron, making the record go to Great Bear Lake, Northwest Territories, in Canada, the largest lake within one jurisdiction.
• The largest lake on an island in a lake on an island is Crater Lake on Vulcano Island in Lake Taal on the island of Luzon, The Philippines.
• The northernmost named lake on Earth is Upper Dumbell Lake in the Qikiqtaaluk Region of Nunavut, Canada at a latitude of 82°28'N. It is located only 5.2 kilometers southwest of Alert, the northernmost settlement in the world. There are also several small lakes located north of Upper Dumbell Lake, but they are all unnamed and only appear on very detailed maps.

Largest by continent[link]

The largest lakes (surface area) by continent are:

• Australia – Lake Eyre (salt lake)
• Africa – Lake Victoria, also the third-largest freshwater lake on Earth. It is one of the Great Lakes of Africa.
• Antarctica – Lake Vostok (subglacial)
• Asia – Lake Baikal (if the Caspian Sea is considered a lake, it is the largest in Eurasia, but is divided between the two geographic continents)
• Oceania – Lake Eyre when filled; the largest permanent (and freshwater) lake in Oceania is Lake Taupo.
• Europe – Lake Ladoga, followed by Lake Onega, both located in northwestern Russia.
• North America – Lake Michigan-Huron, which is hydrologically a single lake. However, lakes Huron and Michigan are often considered separate lakes, in which case Lake Superior would be the largest.
• South America – Lake Titicaca, which is also the highest navigable body of water on Earth at 3,821 m above sea level. The much larger Lake Maracaibo is considered by some to be the second-oldest lake on Earth, but since it lies at sea level and nowadays is a contiguous body of water with the sea, others consider that it has turned into a bay.

See also[link]

References[link]

External links[link]

Wikimedia Commons has media related to: Lakes

Look up lake in Wiktionary, the free dictionary.

• Lakes Database
• Lake Classification Systems
• World's Most Beautiful Lakes – slideshow by The Huffington Post

On Dal (온달, 溫達, ? ~ 590), referred to by Koreans as babo Ondal ("Ondal the fool"), was a general of the Goguryeo, which was one of the Three kingdoms of Korea. Though simple minded, he rose from common origins to become a remarkable and brave general, died during an attempt to battle of Mt. Acha from Silla army in 590.

See also[link]

• Pyeongwon of Goguryeo
• Princess Pyeonggang

This Korean history-related article is a stub. You can help Wikipedia by expanding it. v t e

This Korean biographical article is a stub. You can help Wikipedia by expanding it. v t e