The GWFM discretizes the study area using 25,536 blocks that are 200 feet long by 200 feet wide by 100 feet high (Figure 2). This rather fine discretization interval serves several purposes: (1) it enables the model to accommodate proposed alternatives such as drains at the very localized scale without having to reconstruct/redescretize the model domain; (2) it allows for analysis of localized phenomena such as flow in the vicinity of the pits; and (3) it results in a more realistic model capable of utilizing structural and geomorphic information. The 200 foot horizontal discretization interval is used instead of 100 foot interval to save computation time.
