Subsurface drainage of a three layered soil with slowly permeable top layer

• Published in: Agricultural water management Vol. 42; no. 1; pp. 97 - 109
• Main Authors: Singh, P.K, Singh, O.P, Jaiswal, C.S, Chauhan, H.S
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.1999; Elsevier
• Series: Agricultural Water Management
• Subjects: Gujarat, India
• ISSN: 0378-3774; 1873-2283
• DOI: 10.1016/S0378-3774(99)00027-X

Heavy textured soils are known for the difficulties imposed to subsurface drainage. Field studies on heavy textured soils in the irrigation commands of India have shown that such soils have relatively more pervious soil at depths greater than 1 m from the ground surface. Considering this fact, a performance study of subsurface drainage in heavy textured layered soils of Mahi Right Bank Canal Command of Gujarat (India) was taken up by modifying the drainage equation of de Zeeuw and Hellinga [de Zeeuw, J.W., Hellinga, F., 1958. Neerslag en Afvoer, Land bocwkundig Tidschrift 70, 405–421] for layered soils, which predicted the water table fluctuations and drain discharge corresponding to irrigation or rainfall inputs taking into account the stratification of the soil profile. The equation was tested on the field data obtained from a pilot project of the study area. The study showed that the watertable head gets influenced by the location of interface between the soil layers. The predicted results conformed with the field data.