MODFLOW-NWT model of a hypothetical stream-aquifer system to assess capture map bias

A MODFLOW-NWT (version 1.0.9) model of a hypothetical stream-aquifer system is presented for
the evaluation and characterization of capture map bias. The hypothetical model is a single-layer
model with 30 rows and 100 columns. The hypothetical model is used to develop methods to create
capture difference maps and to calculate and characterize capture map bias with sensitivity analyses.
The hypothetical stream-aquifer system generally represents the arid western U.S.; however, the
methods developed with this model can be applied to any model used to generate capture maps,
regardless of location. The model simulates a hypothetical 200-year transient stress period after
a steady-state stress period. This time period loosely represents 1960 – 2160; however, actual
time is not represented. The MODFLOW model includes a stream (represented with the
MODFLOW SFR or CHD Packages), mountain block recharge (represented with the MODFLOW
RCH Package), and evapotranspiration (represented with the MODFLOW EVT Package). This
USGS data release contains all of the input and output files for the simulations described in the
associated journal article (https://doi.org/10.1111/gwat.12597).