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Table 1 The default model parameters (Def) and the calibrated ones (Cal). The default model parameters represent only saturated subsurface and surface runoff, while the calibrated ones used only in the Kanto Region for T19 represent also the effect of unsaturated subsurface flow

From: Ensemble flash flood predictions using a high-resolution nationwide distributed rainfall-runoff model: case study of the heavy rain event of July 2018 and Typhoon Hagibis in 2019

Parameters Def Cal
n [m−1/3s] 0.4 0.4
da [m] 0.471 0.471
dm [m] 0.05
ka [m/s] 0.1 0.03
β [-] 7.0
nriver [m−1/3s] 0.03