Runoff in relation to rainfall in northern Thailand | |
| Author | Thongterm Yuktanuntana |
| Call Number | AIT Thesis no. 10 |
| Subject(s) | Runoff|zThailand, Northern Rain and rainfall|zThailand, Northern |
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering in the SEATO Graduate School of Engineering, Bangkok, Thailand. |
| Publisher | Asian Institute of Technology |
| Abstract | Northern Thailand is an area of 163,000 km2 extent drained by tributaties of the Chao Phraya, Mekong and Salween rivers, one-third of which is flood plain and the remainder hilly to mountainous terrain. The entire region has a surface layer of residual or alluvial clay and a dense vegetal cover of forest in the high country and rice and other crops on the lowland. Despite moderately heavy precipitation caused by xposure to the south-west monsson, which lasts from eearly May till late September, runoff is relatively light on account of the high evapo- transpiration losses induced by the luxuriant vegetation and year-round high temperatures. IN the Chao Phraya basin the runoff coefficient varies from 0.13 to 0.29, the lower value with the Upper Nan. The average for the 106, 480 km2 catchment in 0.18. These figures are means for the 8-year period 1952-59: in individual years the variation is greater. With the exception of the Wang and lower Ping the runoff coefficient increases progresively in the upstream direction, The average rainfall-runoff defieir of 1000 mm per annum is abnormally high and practically constant throughout the region. It is higher in NOrthern Thailand than in any of the major river basins of South-easr Asia. |
| Year | 1961 |
| Type | Thesis |
| School | Student Research Before 1979 |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Thesis (Year <=1979) |
| Chairperson(s) | Prof. Alan D. Benham; |
| Examination Committee(s) | Dick Holze;Dean Rober M. Holcomb; |
| Degree | Thesis (M.Eng.) - SEATO Graduate School of Engineering, 1961 |