Watershed delineation and codification in southern Patagonia
Watershed definition is fundamental for integrated management of water resources, considering the social, productive and environmental demands. The watershed spatial delimitation is essential to understand eco-hydrological processes in the territory and management. The object...
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| Autores principales: | , , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
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Departamento de Geografía. Facultad de Humanidades. Universidad Nacional del Comahue
2021
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| Acceso en línea: | https://revele.uncoma.edu.ar/index.php/geografia/article/view/3264 |
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| Sumario: | Watershed definition is fundamental for integrated management of water resources, considering the social, productive and environmental demands. The watershed spatial delimitation is essential to understand eco-hydrological processes in the territory and management. The objective of this work was to delineate and code the hydrographic regions of Southern Patagonia under standardized procedures and new geographic information technologies. The ALOS World 3D model, WorldViewhigh-resolution scenes and QGIS 3.12 free software algorithms were used to carry out automated watershed delineations at various hydrological nesting levels, and subsequent coding and nomenclature. A precise cartographic product was achieved at a scale of1: 25,000 on a territory of 366,357.4 km2. This results in 7,307 hydrographic units distributed in 5 levels, with 14 large hydrographic regions (RH) in the upper level, 46 sub-regions, 249 hydrographic basins, 1,110 sub-basins and 5,888 micro-basins. The cartography achieved improved the resolution and precision of actual available regional products, representing a valuable tool for the sustainable water resources management at different levels of organization and complexity of natural processes. |
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