# 5.12 - StateMod Formatted Ground Water Pumping File (*.gwp)

The StateMod formatted ground water pumping file (*.gwp) is generated when the variable ddcsw= 1 and isuply= 4 in the model control file (see Section 4.4). This output file contains the estimated monthly ground water pumping for each structure. It is written in the standard StateMod format in calendar year format for time series information.