Thol Lake is an artificial lake near Thol village in Kadi in

Mehsana District Mehsana district (alternate spelling "Mahesana") is one of the 33 districts of Gujarat state in western India. Mehsana city is the administrative headquarters of this district. The district has a population of over 1.8 million and an area of over ...

in the Indian

state State most commonly refers to: * State (polity), a centralized political organization that regulates law and society within a territory **Sovereign state, a sovereign polity in international law, commonly referred to as a country **Nation state, a ...

Gujarat Gujarat () is a States of India, state along the Western India, western coast of India. Its coastline of about is the longest in the country, most of which lies on the Kathiawar peninsula. Gujarat is the List of states and union territories ...

. A fresh water lake surrounded by marshes, it was built as an irrigation tank in 1912. Declared the Thol Bird Sanctuary in 1988, it is a habitat to 150 species of birds, about 60% of them

waterbirds A water bird, alternatively waterbird or aquatic bird, is a bird that lives on or around water. In some definitions, the term ''water bird'' is especially applied to birds in freshwater ecosystems, although others make no distinction from seabi ...

. Many

migratory birds Bird migration is a seasonal movement of birds between breeding and wintering grounds that occurs twice a year. It is typically from north to south or from south to north. Migration is inherently risky, due to predation and mortality. The ...

nest and breed in the lake and its periphery. The two most prominent species of birds recorded in the sanctuary are

flamingoes Flamingos or flamingoes () are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas (including the Caribbe ...

and

sarus crane The sarus crane (''Antigone antigone'') is a large nonmigratory Crane (bird), crane found in parts of the Indian subcontinent, Southeast Asia, and northern Australia. The tallest of the flying birds, standing at a height of up to , they are a c ...

(''Grus antigone''). The sanctuary is also proposed to be declared an

Eco-Sensitive Zone Eco-Sensitive Zones (ESZs) or Ecologically Fragile Areas (EFAs) are areas in India notified by the Ministry of Environment, Forests and Climate Change (MoEFCC), Government of India around Protected Areas, National Parks and Wildlife Sanctuaries ...

, conforming to the Environment (Protection) Act, 1986 (29 of 1986), for which draft notification has been prepared.

Topography

The lake drains a catchment area of . It is in a semi-arid zone of the Mehsana district with dominance of dry

deciduous In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed Leaf, leaves, usually in the autumn; to the shedding of petals, aft ...

vegetation. The climate in the area consists of three seasons:

winter Winter is the coldest and darkest season of the year in temperate and polar climates. It occurs after autumn and before spring. The tilt of Earth's axis causes seasons; winter occurs when a hemisphere is oriented away from the Sun. Dif ...

summer Summer or summertime is the hottest and brightest of the four temperate seasons, occurring after spring and before autumn. At or centred on the summer solstice, daylight hours are the longest and darkness hours are the shortest, with day ...

and

monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in Atmosphere of Earth, atmospheric circulation and precipitation associated with annu ...

. The average annual rainfall in the catchment of the lake is with a minimum of and maximum of . The maximum and minimum temperatures recorded in the area are and . The lake is situated near Thol village from Kalol and north-west of

Ahmedabad Ahmedabad ( ), also spelled Amdavad (), is the most populous city in the Indian state of Gujarat. It is the administrative headquarters of the Ahmedabad district and the seat of the Gujarat High Court. Ahmedabad's population of 5,570,585 ...

, from

Mehsana Mehsana (), also spelled Mahesana, is a city and the headquarters of Mehsana district in the Indian state of Gujarat. Established in 14th century, the city was under Gaekwad dynasty, Gaekwads of Baroda State from 18th century to the independen ...

History

The lake was initially built in 1912 as a tank by the Gaekwad regime to provide irrigation facilities to farmers. This established the user rights of the lake water. The operation and management of the lake is under the dual control of the Forest and Irrigation departments of the Government of Gujarat.

Features

The lake has a storage capacity of . Its water spread area is . Lake's shore length is and water depth is shallow.

Thol Wildlife Sanctuary

Thol Wildlife Sanctuary, a shallow water reservoir, situated 25 km (15 mi) northwest of Ahmedabad and most popular birding place near Ahmedabad after Nal Sarovar Bird Sanctuary which is about 50 km (30 mi) from Thol Wildlife Sanctuary. Geographically Thol Wildlife Sanctuary falls in

district of North

. Kadi, a

taluka A tehsil (, also known as tahsil, taluk, or taluka () is a local unit of administrative division in India and Pakistan. It is a subdistrict of the area within a district including the designated populated place that serves as its administrative ...

headquarters of the district, is just 22 km (14 mi) away from the Sanctuary. Thol Wildlife Sanctuary is a man-made (made by Sayajirao Gayakvad, Ruler of Baroda) irrigation tank built in 1912 with water storage capacity of 84,000,000 m³ (68,000 ac·ft) and command area of 1450 ha (5.6 mi²) and

catchment A drainage basin is an area of land in which all flowing surface water converges to a single point, such as a river mouth, or flows into another body of water, such as a lake or ocean. A basin is separated from adjacent basins by a perimeter, th ...

area of 153 km² (59 mi²

The wetland is predominated by the open water

habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

, which is surrounded by cropland, fallow land and scrub land. Due to its popularity amongst the bird fraternity the area was notified as Sanctuary in November 1988 under Sec. 18 of Wildlife (Protection) Act, 1972. The best time to visit the place is November to February.

Flora

Apart from trees in the peripheral area of the lake, vegetation reported in this wetland consists of emergent and floating aquatic plants of ''

Acacia nilotica ''Vachellia nilotica'', more commonly known as ''Acacia nilotica'', and by the vernacular names of gum arabic tree, babul, thorn mimosa, Egyptian acacia or thorny acacia, is a flowering tree in the family Fabaceae. It is native to Africa, the M ...

'', '' A. leucoploea'', ''

Zizyphus ''Ziziphus'' is a genus of spiny shrubs and small trees in the buckthorn family, Rhamnaceae. It includes 68 species native to tropical and subtropical Africa, Eurasia, and Australia and tropical South America. The leaves are alternate, entire, ...

'', ''

Azadirachta indica ''Azadirachta indica'', commonly known as neem, margosa, nimtree or Indian lilac, is a tree in the mahogany family Meliaceae. It is one of the two species in the genus ''Azadirachta''. It is native to the Indian subcontinent and to parts of Sout ...

'', ''

Ficus ''Ficus'' ( or ) is a genus of about 850 species of woody trees, shrubs, vines, epiphytes and hemiepiphytes in the family (biology), family Moraceae. Collectively known as fig trees or figs, they are native throughout the tropics with a few spe ...

'' sp., ''Salvadora'' sp., ''

Prosopis chilensis ''Neltuma chilensis'' (formerly ''Prosopis chilensis'') is a species of tree in the genus '' Prosopis'', belonging to the family Fabaceae. It is found in parts of central Chile, southern Peru, Bolivia, and Andean (northwestern) Argentina. Its co ...

'', and ''

Capparis ''Capparis'' is a genus of flowering plants in the family Capparaceae. It includes 142 species of shrubs or lianas which are collectively known as caper shrubs or caperbushes. ''Capparis'' species occur over a wide range of habitat in the subtr ...

'' sp. According to the Normal Biological Spectrum (NBS) study of the sanctuary,

drought A drought is a period of drier-than-normal conditions.Douville, H., K. Raghavan, J. Renwick, R.P. Allan, P.A. Arias, M. Barlow, R. Cerezo-Mota, A. Cherchi, T.Y. Gan, J. Gergis, D. Jiang, A. Khan, W. Pokam Mba, D. Rosenfeld, J. Tierney, ...

resistant vegetation in the category of Bio-geographiczone – IV consisting of thorny shrubs and trees are found, and also reported are mixed flora of aquatic and marshy plants.

Fauna

Birds

Thol Lake, as a bird sanctuary, an inland wetland and a

protected area Protected areas or conservation areas are locations which receive protection because of their recognized natural or cultural values. Protected areas are those areas in which human presence or the exploitation of natural resources (e.g. firewood ...

, is known as a very good habitat for

waterfowl Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae (three species of screamers), Anseranatidae (the magpie goose), and Anatidae, the largest family, which i ...

during the

season, extending through the

. According to IBA reports there are 150 species of birds in the sanctuary of which nearly 60% (90 species) are stated to be waterbirds which are mostly wintering birds. The most prominent of these species is the

flamingos Flamingos or flamingoes () are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas (including the Caribbe ...

. At one time 5-6 thousand flamingos were reported here.

Sarus crane The sarus crane (''Antigone antigone'') is a large nonmigratory Crane (bird), crane found in parts of the Indian subcontinent, Southeast Asia, and northern Australia. The tallest of the flying birds, standing at a height of up to , they are a c ...

s (''Grus antigone''), the tallest of the flying birds, nest here in large numbers. The rich bird life of Thol Wildlife Sanctuary encompasses native as well as migratory birds. Many winter visitors like

great white pelican The great white pelican (''Pelecanus onocrotalus'') also known as the eastern white pelican, rosy pelican or simply white pelican is a bird in the pelican family. It breeds from southeastern Europe through Asia and Africa, in swamps and shallow ...

flamingo Flamingos or flamingoes () are a type of wading bird in the family Phoenicopteridae, which is the only extant family in the order Phoenicopteriformes. There are four flamingo species distributed throughout the Americas (including the Caribbe ...

s, a variety of waterfowl including

mallard The mallard () or wild duck (''Anas platyrhynchos'') is a dabbling duck that breeds throughout the temperate and subtropical Americas, Eurasia, and North Africa. It has been introduced to New Zealand, Australia, Peru, Brazil, Uruguay, Arge ...

s and large numbers of

geese A goose (: geese) is a bird of any of several waterfowl species in the family Anatidae. This group comprises the genera '' Anser'' (grey geese and white geese) and ''Branta'' (black geese). Some members of the Tadorninae subfamily (e.g., Egyp ...

s and many other waders are common site at sanctuary. According to the

IUCN The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the status ...

categorization, the birds reported in the area are:

greater flamingo The greater flamingo (''Phoenicopterus roseus'') is the most widespread and largest species of the flamingo family. Common in the Old World, they are found in Northern (coastal) and Sub-Saharan Africa, the Indian Subcontinent (south of the Him ...

(''Phoenicopterus roseus'') of

least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

species;

Dalmatian pelican The Dalmatian pelican (''Pelecanus crispus''), also known as the curly-headed pelican, is the largest member of the pelican family and among the heaviest flying birds in the world. With a wingspan typically ranging between 2.7 and 3.2 meters (8.9� ...

(''Pelecanus crispus''),

greater spotted eagle The greater spotted eagle (''Clanga clanga''), also called the spotted eagle, is a large migratory bird of prey in the family Accipitridae. It is a member of the subfamily Aquilinae, commonly known as "booted eagles".Helbig, A. J., Kocum, A., ...

(''Clanga clanga''),

(''Antigone antigone''), and

Indian skimmer The Indian skimmer or Indian scissors-bill (''Rynchops albicollis'') is one of the three species that belong to the skimmer genus ''Rynchops'' in the family Laridae. They are somewhat tern-like but like other skimmers, have a short upper mandibl ...

(''Rynchops albicollis'') of the vulnerable species; and the

white-rumped vulture The white-rumped vulture (''Gyps bengalensis'') is an Old World vulture native to South and Southeast Asia. It has been listed as Critically Endangered on the IUCN Red List since 2000, as the population severely declined. White-rumped vultures di ...

(''Gyps bengalensis'') and

Indian vulture The Indian vulture or long-billed vulture (''Gyps indicus'') is a bird of prey native to the Indian subcontinent. It is an Old World vulture belonging to the family of Accipitridae. It is a medium-sized vulture with a small, semi-bald head with li ...

(''Gyps indicus'') of the

critically endangered An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. As of December 2023, of t ...

species.

Mammals

Some of the important fauna reported in the area surrounding the lake are:

bluebull The nilgai (''Boselaphus tragocamelus'') (, literally meaning "blue cow") is the largest antelope of Asia, and is ubiquitous across the northern Indian subcontinent. It is the sole member of the genus ''Boselaphus'', which was first scientifica ...

(''Boselaphus tragocamelus''),

golden jackal The golden jackal (''Canis aureus''), also called the common jackal, is a wolf-like canid that is native to Eurasia. The golden jackal's coat varies in color from a pale creamy yellow in summer to a dark tawny beige in winter. It is smaller a ...

(''Canis aureus'') and

blackbuck The blackbuck (''Antilope cervicapra''), also known as the Indian antelope, is a medium-sized antelope native to India and Nepal. It inhabits grassy plains and lightly forested areas with perennial water sources. It stands up to high at the sh ...

(''Antilope cervicapra'').

References

Bibliography

External links

Thol Wildlife Sanctuary
{{commons category, Thol Lake Bird sanctuaries of Gujarat Lakes of Gujarat Mehsana district Tourist attractions in Mehsana district Ramsar sites in India