Application of a modified conceptual rainfall-runoff model to simulation of groundwater level in an undefined watershed

作者：Hong Nian; Hama Takehide; Suenaga Yuichi; Aqili Sayed Waliullah; Huang Xiaowu; Wei Qiaoyan; Kawagoshi Yasunori^*

来源：Science of the Total Environment, 2016, 541: 383-390.

DOI：10.1016/j.scitotenv.2015.09.026

• Groundwater level
• Rainfall
• Tank model
• Kumamoto City

Groundwater level simulation models can help ensure the proper management and use of urban and rural water supply. In this paper, we propose a groundwater level tank model (GLTM) based on a conceptual rainfall-runoff model (tank model) to simulate fluctuations in groundwater level. The variables used in the simulations consist of daily rainfall and daily groundwater level, which were recorded between April 2011 and March 2015 at two representative observation wells in Kumamoto City, Japan. We determined the best-fit model parameters by root-mean-square error through use of the Shuffled Complex Evolution-University of Arizona algorithm on a simulated data set. Calibration and validation results were evaluated by their coefficients of determination, Nash-Sutcliffe efficiency coefficients, and root-mean-square error values. The GLTM provided accurate results in both the calibration and validation of fluctuations in groundwater level. The split sample test results indicate a good reliability. These results indicate that this model can provide a simple approach to the accurate simulation of groundwater levels.

• 出版日期2016-1-15