# Suranga

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Traditional water management system in Kerala and Karnataka, south India

For other uses, see [Suranga (disambiguation)](/source/Suranga_(disambiguation)).

Face of a Surangam

View of Suranga from inside, towards its face

***Suranga*** (also ***Surangam*** or ***thurangam***) (English: Tunnel well) is a traditional [water management](/source/Water_management) system used to provide a reliable supply of water for human settlements and [irrigation](/source/Irrigation) in [Kasargod district](/source/Kasargod_district) of [Kerala](/source/Kerala) and [Dakshin Kannada](/source/Dakshin_Kannada) district of [Karnataka](/source/Karnataka), [India](/source/India).[1][2][3] A *suranga* is basically a horizontal tunnel dug in the slope of a [laterite](/source/Laterite) hill for about 30 metres (98 ft) to 40 metres (130 ft), which uses [gravitational force](/source/Gravitational_force) for extraction of the underground water and collect into a storage tank.[2] As both the areas are covered by uneven and steep laterite hill which makes boring of traditional [bore well](/source/Water_well#Dug_wells) hard and expensive, *surangas* are considered as a relatively cheap option.[1]: 659

## History

While the exact origin of the *surangas* in the area is not known, the *surangas* which are still in use are not older than a century.[2] Similar structures, known as [qanats](/source/Qanat) can still be seen in parts of [Iran](/source/Iran).[1]: 660[2] It is believed that, the traders who used to travel along the [Silk Route](/source/Silk_Route) had spread the technique of the construction of quanat from ancient [Persia](/source/Persia) to India, [China](/source/China), [Saudi Arabia](/source/Saudi_Arabia), North Africa, [Spain](/source/Spain), [Cyprus](/source/Cyprus) and [Canary Islands](/source/Canary_Islands).[1]: 660[4] Most of the *surangas* in the area were constructed during the 1950s.[1]: 664[5] According to studies, there are around 5000 *surangas* in [Kasargod district](/source/Kasargod_district) of [Kerala](/source/Kerala) and [Dakshin Kannada](/source/Dakshin_Kannada) district of [Karnataka](/source/Karnataka).[2]

## Types

There are two types of surangas - 1) dug in the hillocks with the help of galvazined pipes in a horizontal direction, from where the water percolates out (known as *addaboru* in [Kannada](/source/Kannada))[6] and 2) horizontally dug tunnel like structures which are as high as the height of a man, from where the water percolates out and collects into a water tank.[3]

## Construction

The construction of *surangas* are carried out by people who have this indigenous knowledge, which is passed on from one generation to another.[1]: 659 Detection of the water flow is done by taking into account the slope and elevation, growth of certain [hydrophilic](/source/Hydrophile) plants like, *dhoopada mara* (*Vateria indica*), *basari mara* (*Ficus virens*) and *uppalige mara* (*Macranga indica*),[7] termite mounds and the texture of the soil.[1]: 662[3] The flow of the water can also be detected with the help of skilled workers, who press their ear to the soil at night to understand the direction and presence of the flow.[1]: 662 [Water dowsing](/source/Dowsing) and use of [witchcraft](/source/Witchcraft) is also prevalent for detection of the water flow.[1]: 662[3]

Once the flow is detected, the digging of the *surangas* is carried out by manual labourers or by the villages themselves with the help of improvised digging tools like pick axes and wedges.[5] The digging takes places mainly during the dry season, in between February and May, to prevent collapsing of wall due to presence of moisture in the soil.[8] The tunnels are generally rectangular or dome-shaped with an optimal height and width which allows a man to work and pass comfortably.[1]: 662 The tunnels are made with a downward slope to use the gravitational force for collection of the water percolating outside.[9] During construction, lining of walls is provided to prevent collapsing of wall due to loose or soft soil.[1]: 662 While an average *suranga* is 26 metres (85 ft) meters deep,[1]: 662 *surangas* up to 250 metres (820 ft) meters deep have also been recorded.[10] [Air shafts](/source/Underground_mine_ventilation) are constructed in longer *surangas* to supply fresh air and to expel poisonous gases.[1]: 662

The *surangas* can be independent or can be connected with each other.[1]: 662 The water can then be collected by using a temporary small barrier or dam with mud, which then can flow through a plastic or bamboo pipe into a storage pit or tank.[1]: 662–63 After collection of the water in the storage pit, the water is taken to the farms by siphon methods, by creating aqueducts, or by drip or other irrigation methods.[3][8]

## See also

Wikimedia Commons has media related to [Surangams](https://commons.wikimedia.org/wiki/Category:Surangams).

- [Aryk](/source/Aryk) – Irrigation canal of central Asia

- [Acequia](/source/Acequia) – Community-operated watercourse

- [Qanat](/source/Qanat) – Water supply system developed in ancient Iran

- [Aflaj Irrigation Systems of Oman](/source/Aflaj_Irrigation_Systems_of_Oman)

- [History of water supply and sanitation](/source/History_of_water_supply_and_sanitation)

- [Menara gardens](/source/Menara_gardens) – Public garden in Marrakesh, MoroccoPages displaying short descriptions of redirect targets

- [Traditional water sources of Persian antiquity](/source/Traditional_water_sources_of_Persian_antiquity) – Aspect of Iranian history

- [Shushtar Historical Hydraulic System](/source/Shushtar_Historical_Hydraulic_System) – Irrigation system in Shushtar, Iran (Iran)

- [Tank cascade system](/source/Tank_cascade_system) – Ancient irrigation system in Sri Lanka

- [Johad](/source/Johad) – Traditional rainwater-storage wetland in India (Northern India)

- [Subak](/source/Subak_(irrigation)) - Irrigation system of Bali

## References

1. ^ [***a***](#cite_ref-watermngmnt_1-0) [***b***](#cite_ref-watermngmnt_1-1) [***c***](#cite_ref-watermngmnt_1-2) [***d***](#cite_ref-watermngmnt_1-3) [***e***](#cite_ref-watermngmnt_1-4) [***f***](#cite_ref-watermngmnt_1-5) [***g***](#cite_ref-watermngmnt_1-6) [***h***](#cite_ref-watermngmnt_1-7) [***i***](#cite_ref-watermngmnt_1-8) [***j***](#cite_ref-watermngmnt_1-9) [***k***](#cite_ref-watermngmnt_1-10) [***l***](#cite_ref-watermngmnt_1-11) [***m***](#cite_ref-watermngmnt_1-12) [***n***](#cite_ref-watermngmnt_1-13) [***o***](#cite_ref-watermngmnt_1-14) Balooni, Kulbhushan; Kalro, Amar H; Ambili G. Kamalamma (2010). ["Sustainability of tunnel wells in a changing agrarian context: A case study from South India"](http://dspace.iimk.ac.in/bitstream/2259/630/1/article.pdf) (PDF). *[Agricultural Water Management](https://en.wikipedia.org/w/index.php?title=Agricultural_Water_Management&action=edit&redlink=1)*. **97** (5): 659–65. [doi](/source/Doi_(identifier)):[10.1016/j.agwat.2009.12.006](https://doi.org/10.1016%2Fj.agwat.2009.12.006). Retrieved 13 February 2012.

1. ^ [***a***](#cite_ref-telegraph_2-0) [***b***](#cite_ref-telegraph_2-1) [***c***](#cite_ref-telegraph_2-2) [***d***](#cite_ref-telegraph_2-3) [***e***](#cite_ref-telegraph_2-4) Jayan, T.V. (13 February 2012). ["Water at the end of the tunnel"](http://www.telegraphindia.com/1120213/jsp/knowhow/story_15126817.jsp). *[The Telegraph](/source/The_Telegraph_(Calcutta))*. Retrieved 13 February 2012.{{[cite news](https://en.wikipedia.org/wiki/Template:Cite_news)}}: CS1 maint: deprecated archival service ([link](https://en.wikipedia.org/wiki/Category:CS1_maint:_deprecated_archival_service))

1. ^ [***a***](#cite_ref-suranga_3-0) [***b***](#cite_ref-suranga_3-1) [***c***](#cite_ref-suranga_3-2) [***d***](#cite_ref-suranga_3-3) [***e***](#cite_ref-suranga_3-4) Halemane, Harish (2007). ["Suranga - A Sustainable Water Resource"](http://www.indiawaterportal.org/sites/indiawaterportal.org/files/Surangana%20_%20A%20sustainable%20water%20resource%20_%20Paper%20presented%20at%20a%20national%20seminar%20on%20water%20and%20culture%20(2007).pdf) (PDF). *National Seminar on Water & Culture- Hampi,Bellary District*. Retrieved 13 February 2012 – via India Water Portal.

1. **[^](#cite_ref-4)** Motiee, H.; et al. (2006). "Assessment of the contributions of traditional qanats in sustainable water resources management". *Water Resources Development*. **22** (4): 575–588. [doi](/source/Doi_(identifier)):[10.1080/07900620600551304](https://doi.org/10.1080%2F07900620600551304).

1. ^ [***a***](#cite_ref-deccan_5-0) [***b***](#cite_ref-deccan_5-1) ["Borewells without a pipe"](http://archive.deccanherald.com/Deccanherald/jul192005/spectrum1411542005718.asp). *Deccan Herald*. 19 July 2005. Retrieved 14 February 2012.

1. **[^](#cite_ref-6)** Padre, Shree (20 April 2006). ["Don't dig down"](http://www.indiatogether.org/2006/apr/env-addabore.htm). India Together. Retrieved 13 February 2012.

1. **[^](#cite_ref-7)** Padre, Shree (26 February 2008). ["A 'Gurukula' for surangas"](http://www.indiatogether.org/2008/feb/env-suranga.htm). India Together. Retrieved 13 February 2012.

1. ^ [***a***](#cite_ref-shreepadre_8-0) [***b***](#cite_ref-shreepadre_8-1) Padre, Shree (2010). ["Farming without pumps"](http://www.agriculturesnetwork.org/magazines/india/3-managing-water-for-sustainable-farming/farming-without-pumps/at_download/article_pdf) (PDF). Leisa India. pp. 34–36. Retrieved 13 February 2012.

1. **[^](#cite_ref-9)** Padre, Shree (2 March 2006). ["Surangas, manmade caves to tap underground water"](http://www.indiatogether.org/2006/mar/env-suranga.htm). India Together. Retrieved 13 February 2012.

1. **[^](#cite_ref-10)** Padre, Shree (18 January 2009). ["The unique water tunnel of Sheni"](http://www.indiatogether.com/2009/jan/env-suranga.htm). [India Together](https://en.wikipedia.org/w/index.php?title=India_Together&action=edit&redlink=1). Retrieved 13 February 2012.

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Adapted from the Wikipedia article [Suranga](https://en.wikipedia.org/wiki/Suranga) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Suranga?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.