“…In GFLOW modeling, the analytic elements are two-dimensional and are used only to simulate steady-state conditions (that is, groundwater levels do not vary with time). Comparisons of analytic element to finite-difference numerical modeling techniques are given in Hunt and Krohelski (1996); . MODFLOW-2000 (Harbaugh andothers, 2000), a USGS block-centered, finite-difference code, was used to simulate the three-dimensional flow system in the regional and inset models.…”