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Giertz, Simone; Diekkrüger, Bernd (2003): Discharge data derived from five water level gauges and discharge measurements in the Aguima and Niaou catchment, Benin, West Africa. PANGAEA,, Supplement to: Giertz, S; Diekkrüger, B (2003): Analysis of the hydrological processes in a small headwater catchment in Benin (West Africa). Physics and Chemistry of The Earth, 28(33-36), 1333-1341,

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This paper analyzes the hydrological processes and the impact of soil properties and land use on these processes in tropical headwater catchment in the sub-humid part of Benin (West-Africa), the Aguima catchment. The presented study is integrated in the GLOWA IMPETUS project, which investigates the effects of global change on the water cycle and water availability on a regional scale in Morocco and Benin. The lack of field investigations concerning soil and surface hydrology in the Benin research area necessitates detailed field measurements including measurements of discharge, soil water dynamics, soil physical properties etc. on the local scale in order to understand the dominant runoff generation processes and its influencing factors. This is a pre-requisite to be able to forecast the effects which global change has on hydrological processes and water availability in the region.
The paper gives an overview over the hydrologic measuring concept of the IMPETUS-Benin project focusing on measurements concerning the soil saturated conductivity ksat and discharge behaviour of two different sub-catchment of the Aguima catchment. The results of ksat measurements revealed that interflow is the dominant runoff process on the hillslopes of the investigated catchment. Concerning the impact of land use on the hydrological processes infiltration experiments showed that infiltration rates were reduced on cultivated land compared to natural land cover. This results in significant differences in runoff behaviour and runoff ratios while comparing natural and agricultural used catchments.
Related to:
Giertz, Simone (2004): Analyse der hydrologischen Prozesse in den sub-humiden Tropen Westafrikas unter besonderer Berücksichtigung der Landnutzung am Beispiel des Aguima-Einzugsgebietes in Benin. PhD Thesis, Universität Bonn, Germany, 267 pp, hdl:10013/epic.43295.d001
Median Latitude: 9.124855 * Median Longitude: 1.936015 * South-bound Latitude: 9.106010 * West-bound Longitude: 1.911490 * North-bound Latitude: 9.134590 * East-bound Longitude: 1.959510
Date/Time Start: 2001-06-18T00:00:00 * Date/Time End: 2003-11-14T00:00:00
Datasets created by IMPETUS subproject A2. IMPETUS data set ID: 74
4 datasets

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