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Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor

This study aims at developing a GIS aided analysis to generate watershed runoff data. For this purpose, the Sg. Pangsun watershed, a small headwater catchment located in Ulu Langat, Selangor was chosen as an experimental ground. This basin has an area of approximately 2.6 km2 and lies on the sout...

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Main Author: Tan, Teck Hock
Format: Thesis
Language:English
English
Published: 2002
Subjects:
Geographic information systems - Selangor - Ulu Langat - Sungai Pangsun Watershed - Case studies
Online Access:http://psasir.upm.edu.my/id/eprint/10109/1/FH_2002_15.pdf
http://psasir.upm.edu.my/id/eprint/10109/
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spelling my.upm.eprints.101092024-03-13T04:23:50Z http://psasir.upm.edu.my/id/eprint/10109/ Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor Tan, Teck Hock This study aims at developing a GIS aided analysis to generate watershed runoff data. For this purpose, the Sg. Pangsun watershed, a small headwater catchment located in Ulu Langat, Selangor was chosen as an experimental ground. This basin has an area of approximately 2.6 km2 and lies on the southern flank of the Main Range. Two GIS-based software namely ARC/INFO 3.4 and ArcView 3.1 with Spatial Analyst 1.1 a, 3D-Analyst and the Hydrology extensions were applied in this study. The former was employed to create three digital coverages of geographical features, namely, stream, contour and boundary from topographic maps to be used as database by the latter to perform spatial and hydrological analyses which generated three intended themes, namely, grid slope, flow accumulation and stream network. The grid slope theme provided slope values for the calculation of overland and channel flows travel times on cells concerned using continuity-momentum and Manning-continuity principles respectively. The flow accumulation theme on the other hand delineated the main channel of the study watershed whose water on its cells considered as channel flow. The stream network theme provided the flow path of runoff (distance) for computation of the various time units taken by runoff from cells of both overland and channels flows to travel to the watershed outlet. The cells (partial watershed areas) were then categorized based on their travel times to produce the time-area histogram that represents the translation effect of runoff (equilibrium flow) on watershed surface. Clark's Instantaneous Unit Hydrograph method was later used to take into account the storage effect of the study watershed (delay caused by surface detention, saturation of soil profile, etc.) to produce a 15- minute unit hydro graph (UH). 2002-05 Thesis NonPeerReviewed text en http://psasir.upm.edu.my/id/eprint/10109/1/FH_2002_15.pdf Tan, Teck Hock (2002) Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor. Masters thesis, Universiti Putra Malaysia. Geographic information systems - Selangor - Ulu Langat - Sungai Pangsun Watershed - Case studies English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
topic Geographic information systems - Selangor - Ulu Langat - Sungai Pangsun Watershed - Case studies
spellingShingle Geographic information systems - Selangor - Ulu Langat - Sungai Pangsun Watershed - Case studies
Tan, Teck Hock
Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
description This study aims at developing a GIS aided analysis to generate watershed runoff data. For this purpose, the Sg. Pangsun watershed, a small headwater catchment located in Ulu Langat, Selangor was chosen as an experimental ground. This basin has an area of approximately 2.6 km2 and lies on the southern flank of the Main Range. Two GIS-based software namely ARC/INFO 3.4 and ArcView 3.1 with Spatial Analyst 1.1 a, 3D-Analyst and the Hydrology extensions were applied in this study. The former was employed to create three digital coverages of geographical features, namely, stream, contour and boundary from topographic maps to be used as database by the latter to perform spatial and hydrological analyses which generated three intended themes, namely, grid slope, flow accumulation and stream network. The grid slope theme provided slope values for the calculation of overland and channel flows travel times on cells concerned using continuity-momentum and Manning-continuity principles respectively. The flow accumulation theme on the other hand delineated the main channel of the study watershed whose water on its cells considered as channel flow. The stream network theme provided the flow path of runoff (distance) for computation of the various time units taken by runoff from cells of both overland and channels flows to travel to the watershed outlet. The cells (partial watershed areas) were then categorized based on their travel times to produce the time-area histogram that represents the translation effect of runoff (equilibrium flow) on watershed surface. Clark's Instantaneous Unit Hydrograph method was later used to take into account the storage effect of the study watershed (delay caused by surface detention, saturation of soil profile, etc.) to produce a 15- minute unit hydro graph (UH).
format Thesis
author Tan, Teck Hock
author_facet Tan, Teck Hock
author_sort Tan, Teck Hock
title Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
title_short Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
title_full Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
title_fullStr Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
title_full_unstemmed Application of Geographic Information System (GIS) in Watershed Runoff Analysis: Case Study of Sungai Pangsun Watershed, Ulu Langat, Selangor
title_sort application of geographic information system (gis) in watershed runoff analysis: case study of sungai pangsun watershed, ulu langat, selangor
publishDate 2002
url http://psasir.upm.edu.my/id/eprint/10109/1/FH_2002_15.pdf
http://psasir.upm.edu.my/id/eprint/10109/
_version_ 1794564279338270720
score 13.211869

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