Study of Water Budget for the Yom River in Sukhothai-Phitsanulok Floodplain
Dr. Sombat Chuenchooklin (1)
(1) Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000, Thailand, Phone: 66-55-261061-65 ext. 4003 to 4006, Fax: 66-55-261062, E-mail : sombatck@hotmail.com
0.767-0.976. Flood reducing was great amount between the reach of Srisamrong (Y33) to Sukhothai (Y4) while the excess flood was increased more in the end of the studied area in Bangrakam (Y16). Due to the reduction of shape of the Yom, it could not carry of existing flood and it will be flooded over the area in both banks of the river and go to natural storage areas in 259.7 km2. The crop water requirement was calculated by CROPWAT (FAO) by using crop data in 1995-1997 with 1.19 of crop intensity. The total amount of crop water needs 472.88 million cubic meters annually plus some water for consuming, evaporating and deep percolating is totally 530.21 million cubic meters per year. From the water balance, total flood amount about 600-700 million cubic meters had flown to the lowest area in 255.3 km2 and in natural streams and ponds 67.8 km2 with the mean depth was 2.57 m. The other reason for the reduction of flood is clearly seen from the recharging water to groundwater. It is the evident of using many tube-well pumps in the studied area with total 331 number of wells and 204 deep wells neighbor of the bound. This reason shown by the using water budget principle that if the water table is not declined, so that the amount of water recharge will be assumed to be equal to flood reduction.
Submittal Information
Name :
Date :
Dr. Sombat Chuenchooklin
29-May-01-12:06:58
Organization :
Theme :
Department of Civil Engineering, Faculty of Engineering, Naresuan University
Theme 1
Address :
Presentation :
Department of Civil Engineering, Faculty of Engineering, Naresuan University, Phitsanulok 65000
