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| DOI | 10.1007/s40808-024-01977-6 |
| Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia | |
| 发表日期 | 2024 |
| ISSN | 2363-6203 |
| EISSN | 2363-6211 |
| 英文摘要 | Estimation of streamflow in ungauged catchments is receiving broad research attention for water resources planning and management. Therefore, regionalization of model parameters and spot streamflow measurements have their importance in filling such data gaps. In this study, a regionalization model was established for the estimation of streamflow in ungauged catchments of the Rift Valley Lakes basin in Ethiopia. The Hydrologiska Byrans Vattenbalansavdelning-Integrated Hydrological Modeling System (HBV-IHMS) was calibrated for 14 gauged catchments using bias-corrected satellite rainfall data as model input. Out of which, 8 catchments were selected to develop a regional model due to a similar cluster with spot flow measured catchments and was found that the model performance was acceptable. In these catchments, the calibrated model reproduced the overall pattern and base flow of the observed hydrograph. To establish the regional model, 9 Model Parameters and 32 Physical Catchment Characteristics were used in multiple regression. Daily streamflow data were recorded for three spot measurement rivers sites (Kulfo, Hare, and Hamessa) to serve as validation data for the regionalization model. The validation result showed that the regional model can be applied for ungauged flow estimation in the basin since the Nash-Sutcliffe Coefficient (NSE) is greater than 0.50 and the Relative Volume Error (RVE) is within - 10 to 10%. The combined use of regionalization and spot streamflow measurements is a feasible approach for overcoming data gaps. This study is vital to the Rift Valley Lakes basin authority, scientific community, and decision-makers to undertake spot streamflow measurement in ungauged catchments for water resources management. |
| 英文关键词 | Regionalization; Spot stream flow measurements; HBV; Ungauged catchments |
| 语种 | 英语 |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| WOS记录号 | WOS:001183628400001 |
| 来源期刊 | MODELING EARTH SYSTEMS AND ENVIRONMENT
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/299295 |
| 作者单位 | Arba Minch University |
| 推荐引用方式 GB/T 7714 | . Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia[J],2024. |
| APA | (2024).Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia.MODELING EARTH SYSTEMS AND ENVIRONMENT. |
| MLA | "Evaluation of regionalization parameters for stream flow prediction in ungauged catchments of Rift Valley Lakes Basin, Ethiopia".MODELING EARTH SYSTEMS AND ENVIRONMENT (2024). |
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