MODFLOW-2000 model files used to simulate wellbore flow and evaluate aquifer properties and heterogeneity in wells at Fort Irwin National Training Center, San Bernardino County, California

MODFLOW-2000 was used within the AnalyzeHOLE program--an integrated wellbore flow
analysis tool (https://doi.org/10.3133/tm4F2)--to simulate the 2-D radial flow to each of six
wells within three basins at the Fort Irwin National Training Center in San Bernardino County,
California. Wellbore flow was simulated for each well by using AnalyzeHOLE to evaluate
aquifer properties and heterogeneity. Horizontal layers within the model (hydrogeologic units)
were defined based on lithologic and geophysical logs from each well and adjusted during
calibration. The majority of the wells were installed in previously underdeveloped or minimally
developed groundwater basins. The information gathered from the models provides a basis
for developing and constraining basin-scale hydrogeologic-framework and groundwater-flow
models that will be used to further evaluate water resources in each groundwater basin. This
USGS data release contains all of the input and output files for the AnalyzeHOLE analysis of
six wells described in the associated U.S. Geological Survey Scientific Investigations Report
2019-5091 (https://doi.org/10.3133/sir20195091).