Decision support system for flood management and plan in Nam Loei Basin, Loei province, Thailand

Name: Winai Wangpimool

LCSH: Kasetsart University -- Dissertations. D.Eng. (Water Resources Engineering) 2017

Classification :.LCCS: TC513.T48

LCSH: Kasetsart University. Department of Water Resources Engineering -- Dissertations

LCSH: Flood control -- Thailand -- Loei

LCSH: Decision support system

Abstract: Floods are natural disasters; they cause the losses and damages to lives, properties and the nature. The main objective of this research is to integrate science of meteorology, hydrology and hydraulics by using an appropriate and effective method in flood management and planning, specifically for evaluating the risk of flooding. Mathematical model of hydrology and hydrodynamics has been applied together to evaluate the characteristics of runoff and flooding. The Soil and Water Assessments Tool (SWAT) model was used for the hydrologic study while the ISIS model was used for hydrodynamic study. Moreover, the models and Geographic Information System (GIS) were applied for flood hazard map and risk assessments by using Nam Loei River Basin, Loei Province, as a case study. This study selected flood events that occurred in the year 2002, the year of the highest record flood. The results show that the average annual runoff of Nam Loei Basin was 1,580 million cubic meter and year 2002 had a flood area of 101 sq km. The simulation was done by using three scenarios to find alternative protection and flood mitigation using (1) improved channel, (2) water diversion and (3) new reservoirs. The results from using new reservoirs can reduce the flow down about 30% in September and the flood risk area is down from 105.62 to 80.13 sq km, or about 24% of the area, and the duration of flooding of the flooded area is reduced as well. Meanwhile, a Land use change scenario was applied by SWAT model to study on hydrological impact. Especially, the Para rubber expansion plantation in North eastern has increased rapidly, particularly in areas with steep slopes and other factors which have significant impacts on hydrology and water balance. The results showed that the displacement of original local field crops and disturbed forest land by Para rubber production resulted in an overall increase of evapotranspiration (ET) of roughly about 3%. The major factors are the rubber canopy and precipitation. Moreover, the water balance results showed an annual reduction of about 3% in the basin average water yield, especially during the dry season. Therefore, Decision Support System has developed to help decision maker for flood management and planning. Also develop the ability of communities in risk areas and to create linkages between communities and implementing agencies, to enable local authorities to have proper facilities to cope with natural disasters.

Kasetsart University. Office of the University Library

Address: Bangkok

Email: tdckulib@ku.ac.th

Name: Kobkiat Pongput

Role: Thesis Advisor

Name: Nipon Tangtham

Role: Thesis Co-Advisor

Created: 2017

Modified: 2023-06-30

Issued: 2023-06-30

วิทยานิพนธ์/Thesis

application/pdf

URL: https://kasetsart.idm.oclc.org/login?url=https://www.lib.ku.ac.th/KUthesis/2560/winai-wan-all.pdf

CallNumber: TC513.T48.W56

eng

Spatial: Thailand

Spatial: Loei

DegreeName: Doctor of Engineering

Level: Doctoral Degree

Descipline: Water Resources Engineering

Grantor: Kasetsart University

©copyrights Kasetsart University

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	winai-wan-all.pdf	22.98 MB	2	2025-03-21 20:07:09

ใช้เวลา

0.037627 วินาที