Détail document
A rainfall-runoff model for water management in wadi systems based on hydropedological studies
Abdalla, Mohamed Ahmed Ibrahim
Résumé
The main aim of this thesis was to make a water balance in the Agarma sub-basin of the Wadi Kharouba - Egypt. The study area includes a 13 ha area that was reclaimed into cultivated terraces from a previously heavily eroded, abandoned and degraded landscape thanks to the Matrouh Rural Sustainable Development Project (MARSADEV). The study mostly focused on the evaluation of the water volume that can be stored in the soil terraces after reclamation. The first step was to collect rainfall, water content data and soil hydrological characteristics in high temporal-spatial resolution to be used as input for a distributed model. In the study period (October 2015 – February 2016, the rainy season for the area), a total of 230 mm of rain was recorded. Results shows that up to 50,000 m3 of rainwater were stored into the soil terraces after land reclamation.
[...]
As a second step, the rainfall–runoff responses in the basin were predicted by applying the Kineros2 distributed model to four rainfall–runoff events. The first two events were used for a calibration of the model based on a comparison of measured and simulated total water stored in the soil profile of the reclaimed terraces. Model water storage predictions were mostly affected by both the saturated hydraulic conductivity, Ksp, and the maximum saturation of hillslopes, Smax. Once the most sensitive parameters of the model were calibrated, a validation was carried out by using the best parameter vector obtained and two independent data sets coming from the two rainfall events not used in the calibration procedure. Overall, validation results were quite satisfactory by considering the short historical series used in the calibration and validation procedure, which is likely not to include enough information for robust calibration. However, it is expected that by integrating the set of storage measurements with discharge measurements coming from a recently installed ultrasonic instrument to measure the amount of water leaving the watershed, the model predictions will improve significantly.
- Localisation
- Fiche
- Commentaires
Bibliothèque
-
Biblioteca CIHEAM Bari
Biblioteca CIHEAM Bari
Document à consulter sur place uniquement
Cote
M.Sc. 794
Document à consulter sur place uniquement
Cote
M.Sc. 794 A
Document à consulter sur place uniquement
Cote
ARCH M.Sc. 794