Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed.
GeoWEPP, an integration of WEPP and TOPAZ within a GIS interface, was used to predict sediment load and runoff at the Lui Watershed, Selangor, Malaysia. Input files for land cover, slope, climate, soil, and management were generated within GeoWEPP and WEPP interfaces and topographic data comprising...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English English |
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Malaysian Society of Soil Science
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/23786/ http://psasir.upm.edu.my/id/eprint/23786/1/Accuracy%20of%20GeoWEPP%20in%20estimating%20sediment%20load%20and%20runoff%20from%20a%20tropical%20watershed.pdf |
| _version_ | 1848844855931830272 |
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| author | Ebrahimpour, M. K. Balasundram, Siva Talib, Jamal Abdul Rahim, Anuar Memarian, Hadi |
| author_facet | Ebrahimpour, M. K. Balasundram, Siva Talib, Jamal Abdul Rahim, Anuar Memarian, Hadi |
| author_sort | Ebrahimpour, M. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | GeoWEPP, an integration of WEPP and TOPAZ within a GIS interface, was used to predict sediment load and runoff at the Lui Watershed, Selangor, Malaysia. Input files for land cover, slope, climate, soil, and management were generated within GeoWEPP and WEPP interfaces and topographic data comprising 1017 hillslopes were parameterized using TOPAZ algorithm. CLImate GENerator (CLIGEN) was used to estimate stochastic climatic parameters. Soil properties such as frequency of soil particles, CEC, OC, and rock fragment were utilised to define a reasonable range of soil parameters. A management file was generated using EPIC algorithm for different land use types and for all hillslopes during the simulation period 1996 - 2008. The results showed an over-estimation of sediment load and an underestimation of runoff compared to measured data. This work shows that GeoWEPP is able to predict runoff more accurately than sediment load. |
| first_indexed | 2025-11-15T08:37:34Z |
| format | Article |
| id | upm-23786 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:37:34Z |
| publishDate | 2011 |
| publisher | Malaysian Society of Soil Science |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-237862015-09-09T04:48:01Z http://psasir.upm.edu.my/id/eprint/23786/ Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. Ebrahimpour, M. K. Balasundram, Siva Talib, Jamal Abdul Rahim, Anuar Memarian, Hadi GeoWEPP, an integration of WEPP and TOPAZ within a GIS interface, was used to predict sediment load and runoff at the Lui Watershed, Selangor, Malaysia. Input files for land cover, slope, climate, soil, and management were generated within GeoWEPP and WEPP interfaces and topographic data comprising 1017 hillslopes were parameterized using TOPAZ algorithm. CLImate GENerator (CLIGEN) was used to estimate stochastic climatic parameters. Soil properties such as frequency of soil particles, CEC, OC, and rock fragment were utilised to define a reasonable range of soil parameters. A management file was generated using EPIC algorithm for different land use types and for all hillslopes during the simulation period 1996 - 2008. The results showed an over-estimation of sediment load and an underestimation of runoff compared to measured data. This work shows that GeoWEPP is able to predict runoff more accurately than sediment load. Malaysian Society of Soil Science 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/23786/1/Accuracy%20of%20GeoWEPP%20in%20estimating%20sediment%20load%20and%20runoff%20from%20a%20tropical%20watershed.pdf Ebrahimpour, M. and K. Balasundram, Siva and Talib, Jamal and Abdul Rahim, Anuar and Memarian, Hadi (2011) Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. Malaysian Journal of Soil Science, 15. pp. 25-33. ISSN 1394-7990 English |
| spellingShingle | Ebrahimpour, M. K. Balasundram, Siva Talib, Jamal Abdul Rahim, Anuar Memarian, Hadi Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title | Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title_full | Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title_fullStr | Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title_full_unstemmed | Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title_short | Accuracy of GeoWEPP in estimating sediment load and runoff from a tropical watershed. |
| title_sort | accuracy of geowepp in estimating sediment load and runoff from a tropical watershed. |
| url | http://psasir.upm.edu.my/id/eprint/23786/ http://psasir.upm.edu.my/id/eprint/23786/1/Accuracy%20of%20GeoWEPP%20in%20estimating%20sediment%20load%20and%20runoff%20from%20a%20tropical%20watershed.pdf |