Sunken streambed structure
This practice consists of rectangular excavations in streambeds, named dohs, to provide temporary storage of runoff to enhance groundwater recharge, increasing water yields from shallow wells for supplementary irrigation. They also collect and impound subsurface flow. The technology is used in conjunction with shallow wells (odees), which enable farmers to harvest the increased groundwater for supplementary irrigation of annual crops. In summary, dohs are low cost water recharge alternatives for poorer communities, and in this case study, the extra area brought under production has meant that all families can have access to some water for irrigation.
Auteur: WOCAT (World Overview of Conservation Approaches and Technologies) network
Organisation: The Food and Agriculture Organization of the United Nations FAO TECA
Année: 2020
Pays: India
Couverture géographique: Asie et le Pacifique
Type: Pratiques
Texte intégral disponible à l'adresse: https://www.fao.org/teca/en/technologies/7514
Langue: English