MODFLOW 6 and MODPATH 7 model data sets used to evaluate groundwater flow in the vicinity of Horsham and Warminster, Bucks and Montgomery Counties, Pennsylvania-Preliminary simulations for conditions in 1999, 2010, 2013, 2016, and 2017
Description
In cooperation with the U.S. Navy, USGS developed and calibrated a numerical
MODFLOW 6 model to simulate regional groundwater flow under selected
conditions during 1999-2017 at and near the former Willow Grove Naval Air
Station Joint Reserve Base in Horsham, Montgomery County and the former
Naval Air Warfare Center Warminster in Bucks County, Pennsylvania. The
model simulations provide information on regional groundwater-flow paths
and groundwater/surface-water exchanges, in relation to changes in water
supply pumping and recharge rates. Groundwater flow paths were simulated
using MODPATH 7 from possible PFAS sources at the former bases under
steady-state conditions for years 1999, 2010, 2013, 2016, and 2017. This
USGS data release contains all of the input and output files for the model
calibration and simulations described in the associated report
(https://doi.org/10.3133/ofr20191137).