Investigating the relationship between groundwater level and river and analyzing its daily flow coefficient

In recent years, the need for integrated management of water resources has made it very important to study the interaction of surface and groundwater. Many research centers around the world are now focused on identifying the mechanisms and consequences of surface and groundwater interactions. Various field methods and modeling have also been developed in line with these efforts. One of the most important types of water exchanges in the catchments of arid and semi-arid regions occurs between rivers (as the most common surface water sources) and groundwater. These water exchanges affect the quantity and quality of water resources. In this study, by examining the daily flow coefficient, the relationship between changes in river flow coefficient and groundwater level in the vicinity of the river has been estimated. In this regard, daily groundwater level, precipitation, and flow data were examined, which showed acceptable results between river flow coefficient and water level level on a daily scale. Also, the relationship between flow and water table level and finally the relationship between flow and precipitation and groundwater level was obtained using a multivariate multivariate nonlinear regression model. Numerical was obtained.