MODFLOW-2005 Models for Revisiting "An Exercise in Groundwater Model Calibration and Prediction"

Hypothetical two-dimensional, steady-state groundwater flow models of a previously
published 1988 model calibration exercise were developed using the finite-difference
computer code, MODFLOW-2005, to demonstrate the power of modern parameter
estimation and uncertainty approaches. For this study, an initial run recreated the
1988 "truth" model. The true model was then simplified to account for information
not provided the participants in the 1988 calibration exercise. Increasing sophistication
was brought to bear to demonstrate how problems identified in 1988 were overcome
using modern software approaches. This USGS data release contains all of the input
and output to run the model simulations described in the associated journal article
(https://doi.org/10.1111/gwat.12907).