Prediction of seepage and percolation rate for some irrigated areas of N-E, Thailand | |
| Author | Adhikary, Uddhav Prasad |
| Call Number | AIT Thesis no.AE-79-18 |
| Subject(s) | Soil percolation Seepage |
| Note | A thesis submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | A study to predict seepage and percolation rate was carried out at Huai Sathod, Huaikaeng, Huai Aeng and Lampao irrigation project area in North east of Thailand. Water subsidence technique was adopted to find see page and percolation rate in rice field. However, subsurface water recession rate was estimated by Auger hole technique, and hydraulic conductivity was estimated by double tube method. The study is part of essential activities needed for good water management in the vast agricultural land of Northeast of Thailand. This study gives the physical characterization of some irrigated soils of the North east. These includes hydraulic conductivity, seepage and percolation rate and water recession rate at different locations along with water table record and soil textural analysis at the points of studies. The mean seepage and percolation rate for some irrigated soils of North east Thailand has been estimated as 3.5 mm/day, whereas, the mean evapotranspiration on the area of observation has been estimated as 5.9 mm/day. The mean hydraulic conductivity has been found as 0.37 m/day and subsurface water recession rate from the same locations has been estimated as 0.45 m/ day. The higher value of subsurface water recession rate may be due to seepage component which rarely includes in former one. The mean seepage and percolation rate indicates that about 37% (sample varies from 24% to 50%) of the supplied water will be lost through seepage and percolation only. The seepage and percolation rate in rice field as well as subsurface water recession rate has been correlated with hydraulic conductivity and water table. The multiple non-linear regression with correlation coefficient of 0.9 suits the observed data for the region. The non-linear equation obtained may be used for predicting seepage and percolation rate in the rice field, which is of great concern for better water management of the region by the knowledge of hydraulic conductivity and water table. The seepage and percolation rates are also estimated for some of the locations where water management scheme is going to be started. The predicted values seem to be quite reasonable and can be used for water management studies of the region. |
| Year | 1979 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Apichart Anukularmphai |
| Examination Committee(s) | Eppendorfer, W.H. ;Paiboon Prabuddham |
| Scholarship Donor(s) | Switzerland |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1979 |