Watershed Delineation On A Hexagonal Mesh Grid

Journal Article · Mon Jun 01 04:00:00 EDT 2020 · Environmental Modelling & Software

DOI:https://doi.org/10.1016/j.envsoft.2020.104702· OSTI ID:1617355

Liao, Chang ^[1]; Tesfa, Teklu K. ^[1]; Duan, Zhuoran ^[1]; Leung, Lai-Yung ^[1]

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1. BATTELLE (PACIFIC NW LAB)

Spatial discretization is the cornerstone of all spatially-distributed numerical simulations including watershed hydrology. Traditional square grid spatial discretization inevitably suffers from several drawbacks. In this study, we developed a watershed delineation model for the hexagon grid spatial discretization. We applied this model to different types of watershed in the US. Then we evaluated its performance against the traditional method. The comparisons show that results from hexagon grid spatial discretization exhibit many advantages over the tradition method. We suggest spatially distributed hydrological simulation should consider hexagon grid spatial discretization.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1617355
• Report Number(s): PNNL-SA-146861
• Journal Information: Environmental Modelling & Software, Journal Name: Environmental Modelling & Software Vol. 128
• Country of Publication: United States
• Language: English

Related Subjects

Hexagon
watershed deliniation