Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes
Study Region: The present study was conducted in 24 watersheds located in the region of Galicia, in the northwest of Spain, covering an extension of approximately 13,000 km2.Study focus: This study is focused on the application and evaluation of different schemes for streamflow Prediction in Ungauge...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Journal of Hydrology: Regional Studies |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214581823001143 |
| _version_ | 1797801754527531008 |
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| author | Juan F. Farfán Luis Cea |
| author_facet | Juan F. Farfán Luis Cea |
| author_sort | Juan F. Farfán |
| collection | DOAJ |
| description | Study Region: The present study was conducted in 24 watersheds located in the region of Galicia, in the northwest of Spain, covering an extension of approximately 13,000 km2.Study focus: This study is focused on the application and evaluation of different schemes for streamflow Prediction in Ungauged Basins (PUB). The MHIA model (Spanish acronym for Modelo HIdrológico Agregado), is first used to reproduce the observed time series of discharge in several gauged basins. Then, six different regionalisation schemes are applied to transfer the hydrological model parameters to ungauged catchments. For that purpose, we explore and compare two physical similarity, two spatial proximity and two regression-based regionalisation schemes. Output averaging (also known as ensemble modelling) as well as parameter averaging implementations of the physical similarity and spatial proximity methods are analysed.New hydrological insights: The most efficient methods are those based on output averaging, with acceptable success rates (SR) in 88% of the cases. On the other hand, the parameter averaging-based methods have the lowest SR. The methods based on spatial proximity output averaging provide the best performance when the receptor basin has a sufficient number of nearby donor basins. On the other hand, the methods based on physical similarity output averaging show a better performance in areas where there is a low density of donor catchments. The regression-based methods showed the lowest performance in all cases. The existence of correlations between the performance of the regionalisation schemes and the area of the receptor catchments was observed, with higher performances in large basins than in small basins. |
| first_indexed | 2024-03-13T04:55:18Z |
| format | Article |
| id | doaj.art-1fcc4254e0f04d43bec28cb8ecc7538e |
| institution | Directory Open Access Journal |
| issn | 2214-5818 |
| language | English |
| last_indexed | 2024-03-13T04:55:18Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Hydrology: Regional Studies |
| spelling | doaj.art-1fcc4254e0f04d43bec28cb8ecc7538e2023-06-18T05:02:04ZengElsevierJournal of Hydrology: Regional Studies2214-58182023-06-0147101427Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemesJuan F. Farfán0Luis Cea1Corresponding author.; Universidade da Coruña, Water and Environmental Engineering Group, Center for Technological Innovation in Construction and Civil Engineering (CITEEC), Elviña, 15071 A Coruña, SpainUniversidade da Coruña, Water and Environmental Engineering Group, Center for Technological Innovation in Construction and Civil Engineering (CITEEC), Elviña, 15071 A Coruña, SpainStudy Region: The present study was conducted in 24 watersheds located in the region of Galicia, in the northwest of Spain, covering an extension of approximately 13,000 km2.Study focus: This study is focused on the application and evaluation of different schemes for streamflow Prediction in Ungauged Basins (PUB). The MHIA model (Spanish acronym for Modelo HIdrológico Agregado), is first used to reproduce the observed time series of discharge in several gauged basins. Then, six different regionalisation schemes are applied to transfer the hydrological model parameters to ungauged catchments. For that purpose, we explore and compare two physical similarity, two spatial proximity and two regression-based regionalisation schemes. Output averaging (also known as ensemble modelling) as well as parameter averaging implementations of the physical similarity and spatial proximity methods are analysed.New hydrological insights: The most efficient methods are those based on output averaging, with acceptable success rates (SR) in 88% of the cases. On the other hand, the parameter averaging-based methods have the lowest SR. The methods based on spatial proximity output averaging provide the best performance when the receptor basin has a sufficient number of nearby donor basins. On the other hand, the methods based on physical similarity output averaging show a better performance in areas where there is a low density of donor catchments. The regression-based methods showed the lowest performance in all cases. The existence of correlations between the performance of the regionalisation schemes and the area of the receptor catchments was observed, with higher performances in large basins than in small basins.http://www.sciencedirect.com/science/article/pii/S2214581823001143Ungauged basinRegionalisationSpatial proximityPhysical similarityArtificial Neural NetworksHydrological model |
| spellingShingle | Juan F. Farfán Luis Cea Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes Journal of Hydrology: Regional Studies Ungauged basin Regionalisation Spatial proximity Physical similarity Artificial Neural Networks Hydrological model |
| title | Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes |
| title_full | Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes |
| title_fullStr | Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes |
| title_full_unstemmed | Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes |
| title_short | Regional streamflow prediction in northwest Spain: A comparative analysis of regionalisation schemes |
| title_sort | regional streamflow prediction in northwest spain a comparative analysis of regionalisation schemes |
| topic | Ungauged basin Regionalisation Spatial proximity Physical similarity Artificial Neural Networks Hydrological model |
| url | http://www.sciencedirect.com/science/article/pii/S2214581823001143 |
| work_keys_str_mv | AT juanffarfan regionalstreamflowpredictioninnorthwestspainacomparativeanalysisofregionalisationschemes AT luiscea regionalstreamflowpredictioninnorthwestspainacomparativeanalysisofregionalisationschemes |