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Water Portal / Rainwater Harvesting / In situ rainwater harvesting

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{{Language-box|english_link=Water Portal / Rainwater Harvesting / In situ rainwater harvesting | french_link=Coming soon La collecte des eaux de pluie in situ | spanish_link=Coming soon Captación de agua de lluvia in situ | hindi_link=Coming soon वाटर पोर्टल / वर्षाजल संचयन / यथास्थान वर्षाजल संचयन | malayalam_link=Coming soon|tamil_link=Coming soon | korean_link=Coming soon 원위치 빗물 집수 | chinese_link=原地集雨 | indonesian_link=Coming soon Panen Air Hujan / Panen Air Hujan Langsung in Situ | japanese_link=Coming soonIn situ雨水貯留}}

[[Image:In situ - rainwater harvesting.jpg|thumb|right|200px|In situ rainwater harvesting in Jodhpur, Rajasthan. Photo: [http://www.retailforsuregreenfieldeco.com/www/photogallery.php Greenfield Eco Solutions Pvt. Ltd]]]In arid and semi-arid regions, where precipitation is low or infrequent during the dry season, it is necessary to store the maximum amount of rainwater during the wet season for use at a later time, especially for agricultural and domestic water supply. One of the methods frequently used in rainwater harvesting is the storage of rainwater '''in situ'''. Topographically low areas are ideal sites for in situ harvesting of rainfall. This technique has been used in the arid and semi-arid regions of northeastern Brazil, Argentina, and Paraguay, primarily for irrigation purposes. The in situ technology consists of making storage available in areas where the water is going to be utilized.

Generally this technology is simple and easy to use. Governmental organizations and the agricultural community generally work together to support and promote the in situ rainwater storage. Educational and information programs should be provided to inform users of the benefits of this technology, and the means of implementing rainwater harvesting while preventing soil loss.

* '''Aderaldo de Souza Silva''', Empresa Brasileira de Pesquisa Agropecuaria (EMBRAPA), Centro Nacional de Pesquisa de Monitoramento e Avaliacao de Impacto Ambientalt (NPMA), Rodovia SP-340 km 127.5, Bairro Tanquinho Velho, Caixa Postal 69, 13820-000 Jaguariuna, São Paulo, Brasil. Tel.(55-4198)67-5633. Fax (55-4198)67-5225.

* Large wiki on water use for agriculture: [http://web.archive.org/web/20151025174729/http://agropedia.iitk.ac.in:80/ Agropedia]

===Acknowledgements===

[http://www.oas.org/dsd/publications/Unit/oea59e/begin.htm#Contents Source Book of Alternative Technologies for Freshwater Augmentation in Latin America and the Caribbean]. 1.2 Rainwater harvesting in situ. UNEP - International Environmental Technology Centre United Nations Environment Programme. Unit of Sustainable Development and Environment General Secretariat, Organization of American States, Washington, D.C., 1997.

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