University of Twente Student Theses
How good is the calibrated steady-state model of the Hollandse Graven catchment for predicting its hydrological system regimes under wet and dry climate conditions?
Asnakew, G.T. (2024) How good is the calibrated steady-state model of the Hollandse Graven catchment for predicting its hydrological system regimes under wet and dry climate conditions?
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| Abstract: | A steady-state groundwater model of the Hollandse graven catchment has been developed using trial-and-error calibration. In the calibration, remarkable agreement between observed and simulated heads has been achieved with ME of zero, MAE, and RMSE of 0.34 and 0.42 meters, respectively. 90.2 % of the piezometers used for the model prediction demonstrated an MAE of ≤ 1.71 and RMSE of ≤ 1.8 meters. In the wet year, 90.9 % of the piezometers demonstrated an MAE of ≤ 1.89 and 96.9% an RMSE of ≤2. On the other hand, 84.8% of the piezometers show an MAE of ≤1.89, and 81.8 % an RMSE of ≤ 1.8. This indicates that the calibrated steady-state model predicts better for the wet year. Unsaturated zone evapotranspiration accounts for the highest percentage: 33.99% and 53.18% of their respective effective precipitation for wet and dry years, respectively. From the analysis of MAE and RMSE error matrices and visual head plots, the main conclusion is that the calibrated steady-state model of the Hollandse graven catchment could be used to predict its hydrological system regimes under wet and dry climatic conditions. Nevertheless, its application for transient prediction encounters challenges in accurately replicating hydraulic heads across stress periods. |
| Item Type: | Essay (Master) |
| Faculty: | ITC: Faculty of Geo-information Science and Earth Observation |
| Subject: | 38 earth sciences, 43 environmental science |
| Programme: | Geoinformation Science and Earth Observation MSc (75014) |
| Link to this item: | https://purl.utwente.nl/essays/98103 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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