| Tamil Nadu|
Koothanallur is a town in Tiruvarur district in the South Indian state of Tamil Nadu. The town is located at a distance of 20 km (12 mi) from the district headquarters Tiruvarur and 350 km (220 mi) from the state capital Chennai. Koothanallur is known for the Big Mosque.
Koothanallur is believed to have obtained its name from two brothers named Koothan during the early 12th century. Koothanallur was a part of the erstwhile Tanjore district until Indias independence in 1947 and Nagapattinam district until 1991 and subsequently a part of the newly formed Tiruvarur district. The town is a part of the fertile Cauvery Delta and the major profession in the town is agriculture.
Koothanallur is administered by a municipality established in 1994. As of 2011, the municipality covered an area of 12.31 km2 (4.75 sq mi) and had a population of 25,423. Koothanallur comes under the Tiruvarur assembly constituency which elects a member to the Tamil Nadu Legislative Assembly once every five years and it is a part of the Nagappattinam constituency which elects its Member of Parliament (MP) once in five years. Roadways are the major mode of transportation to the town and the nearest railway station is at Mannargudi. The nearest seaport is Nagapattinam Port, located 33 km (21 mi) away, while the nearest airport is the Tiruchirappalli International Airport, located 104 km (65 mi) away from the town.
Koothanallur is believed to have obtained its name from two brothers named Koothan during the early 12th century. "Nallur" is a common term used to indicate the welfare of villages. Koothanallur was a part of the erstwhile Tanjore district until Indias independence in 1947 and Nagapattinam district until 1991 and subsequently a part of the newly formed Tiruvarur district. It is populated predominantly by Muslim community.
Koothanallur is located at 10.718°N 79.519°E? / 10.718; 79.519. Rivers Vennar and Koraiyar, which flows through the heart of the town, keeps the soil fertile. The topography is completely flat and the town is a part of the fertile Cauvery Delta. Koothanallur is situated at a distance of 350 km (220 mi) from the state capital Chennai and 33 km (21 mi) from Tiruvarur, the district headquarters. The type of soil is predominantly clay and sandy, conducive for cultivation. There are no commercial mineral resources in the town. The Ayacut area around the two rivers occupies more than 800 ha (2,000 acres) of land. Like in the rest of the state, the period from November to February in Mannargudi has a climate full of warm days and cool nights. The onset of summer is from March to the end of June. The average temperature range from 37 °C (99 °F) in January to 22.5 °C (72.5 °F) in May and June. Summer rains are sparse and the first monsoon, the South-West monsoon, usually sets in June and continues until September. North-East monsoon usually sets in October and continues until January. The rainfall during North-East monsoon is relatively higher and is beneficial to the district at large because of the heavy rainfall and the Western ghats feeding the river Cauvery. The average rainfall is 1,146.8 mm (45.15 in), most of which is contributed by the North-East monsoon.