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  4. Impacts of Channel Network Type on the Unit Hydrograph

Impacts of Channel Network Type on the Unit Hydrograph




Hidrología, Modelación hidrológica


Autores: Kalsey Czyzyk, Dario Mirossi, Almoatasem Abdoulhak, Sediqa Hassani, Jeffrey Niemann, Jorge Gironás

Publicado en

Revista: Water 2020, 12(3), 669; https://doi.org/10.3390/w12030669


Unit hydrographs (UHs) remain widely used in hydrologic modeling to predict the stormflow that is produced at a basin outlet in response to runoff generated throughout the basin. Numerous studies have demonstrated that a basin’s UH depends on its geomorphic properties, and several methods estimate synthetic UHs using such properties. However, previous studies have not examined whether the channel network type (such as dendritic, parallel, pinnate, rectangular, and trellis) impacts the UH shape. The objectives of this study were to determine: (1) whether those five network types exhibit distinct UHs, and (2) whether knowledge of the network type is sufficient to replace the actual flow path structure in UH estimation.