1. Nguyen Kim Loi1, Tran Thong Nhat1, Tran Le Nhu Quynh1,
APPLICATION OF SWAT MODEL TO ASSESS SUB-WATERSHED IN NGHIA TRUNG, BINH PHUOC, VIET NAM
Nguyen Kim Loi1, Tran Thong Nhat1, Tran Le Nhu Quynh1,
Dang Thanh Ha1, Manuel Reyes2, Raghavan Srinivasan3
1Nong Lam University, HCMC, Vietnam
2North Carolina A&T State University (NCA&TSU), Greensboro, NC 27411, USA
3Texas A&M University, College Station, TX 77845, USA
Presented on SWAT-SEA Conference on Jan 7-8, 2009 in ChiangMai, Thailand

2. Content Introduction Study area Data Methodology Results Suggestions
References
Mr. Tran Thong Nhat
5/19/2018

3. Introduction
A part of the SANREM CRSP “Agroforestry and Sustainable Vegetable Production in Southeast Asia Watersheds” project
Coordination: North Carolina A&T State University
Research team: Nong Lam University
Mr. Tran Thong Nhat
5/19/2018

4. Justification The rapid increase of population
The needs for economic growth
Land use changes within the watershed
Pursuing integrated optimal planning
The sustainable uses of these watershed resources
The optimal balance between economic development and environmental quality within a watershed
Mr. Tran Thong Nhat
5/19/2018

5. Objectives
The research attempts to solve sediment yield through the SWAT
To provide decision makers with a scientific tool for supporting them in making decisions on reservation of water and soil resources
To assess the impact of land use practices to sediment yield
To make policy recommendations to policy maker on land use change impact to sediment yield
Mr. Tran Thong Nhat
5/19/2018

6. Study Area
Mr. Tran Thong Nhat
5/19/2018

7. Methodology SWAT Scenario 2 Scenario 1 LU: Agroforestry
LU: Existing Land use
Scenario 2
LU: Agroforestry
System
Comparation
Suggestions to DM
Mr. Tran Thong Nhat
5/19/2018

8. Overlay for HRU definition Sub-watershed delineation
SWAT
Soil parameters
Landuse parameters
Climate data
Results
SWAT
Overlay for HRU definition
ArcSWAT Interface
Sub-watershed delineation
DEM
Drainage Network
Soil Map
RS Image
Image Classification
GIS Data
Landuse Map
SWAT Model in Nghia Trung Sub – Watershed, Vietnam
Mr. Tran Thong Nhat
5/19/2018

9. Data – Topo
Mr. Tran Thong Nhat
5/19/2018

10. Watershed
Mr. Tran Thong Nhat
5/19/2018

11. Overlay – HRU
Mr. Tran Thong Nhat
5/19/2018

12. Climate data Mr. Tran Thong Nhat 5/19/2018 ID NAME XPR YPR 1 DongPhu 2
BuDang 3
PhuocLong
Mr. Tran Thong Nhat
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13. Soil parameters
Mr. Tran Thong Nhat
5/19/2018

14. LU Types Scenario 1: Existing Landuse Scenario 2: Agroforestry System
VALUE
LANDSUE 19
ARGL 41
URBN 52
URLD 55
WATR
VALUE
LANDSUE 20
FRST 41
URBN 52
URLD 55
WATR
Mr. Tran Thong Nhat
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15. Set up SWAT
Mr. Tran Thong Nhat
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16. Results Scenarios Sed Yield (Ton/ha) Surf Q (mm) 1: ARGL 295.31 985.11
2: FRST
27.80
705.38
 Scenario 2 better than Scenario 1
Mr. Tran Thong Nhat
5/19/2018

17. Suggestions Should measure observed data for calibration
Need collecting more data for more perfect research
Water qualitiy
Soil quality
Mr. Tran Thong Nhat
5/19/2018

18. References
1. Stan Aronoff, 2005, Remote Sensing for GIS Managers, ESRI Press
2. Canadian Centre for Remote Sensing, 2007, Fundmentals of Remote Sensing, July
3. Zhilin Li, et. al, 2005, Digital Terrain Modeling, Principles and Methodology, CRC Press
4. S.L. Neitsch, et. al, 2004, Soil and Water Assessment Tool, Input/Output File Documentation
5. M. Winchell, et. al, 2007, ArcSWAT Interface for SWAT2005, User’s Guide
Mr. Tran Thong Nhat
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19. THANK YOU FOR ATTENTION
Mr. Tran Thong Nhat
5/19/2018