IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 4 - HYDRO-ENVIRONMENT : Application and Development of Soil Erosion Models for Lesotho
Application and Development of Soil Erosion Models for Lesotho
Author : Liphapang Khaba and Jim Griffiths
Though critical for the country?s export of water to South Africa and generating power for Lesotho, many reservoirs in Lesotho have been designed using minimal sediment transport and erosion data and suffer from rapid sedimentation. This paper presents initial results fromcatchment-scale erosion modelling usingtheindustry-standard WMS-GSSHA model, in the Nqoe River upland catchment in the Butha-Buthe District in the north of Lesotho. Geology of the catchment is predominantly basalt in the uplands and fine-grained sandstones and siltstones in the lower reaches. Land-cover type is mainly grassland with some cultivation of marginal lands. The model uses freely available digital elevation model (ASTER GDEM), soil and land-cover data with Tropical Rainfall Measuring Mission (TRMM) rainfall data. This study is part of a larger project to assess the utility of a range of soil erosion models that can be used for the assessment of soilerosion in data sparse areas.
File Size : 1,733,289 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Article : THEME 4 - HYDRO-ENVIRONMENT
Date Published : 18/07/2016
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