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Intermittent rivers and ephemeral streams are ubiquitous globally (Datry et al., 2017). Most research on intermittent rivers and ephemeral streams has focused on dryland areas, including hyper-arid, arid, semi-arid, and dry-subhumid regions, because low precipitation and high evaporation rates are a major driver of streamflow intermittency (Datry et al., 2017;Tooth, 2000). In temperate and humid regions, ephemeral streams are primarily found in headwaters, whereas, middle and lower reaches are often perennial (