MODFLOW-2000 and MODPATH used to evaluate groundwater flow and selected groundwater-management scenarios in the Brunswick area, Georgia, 2004-2015
Dates
Release Date
2019-01-01
Start Date
2004-06-01
End Date
2015-10-31
Publication Date
2023-09-15
Citation
Cherry, G.S., 2019, MODFLOW-2000 and MODPATH used to evaluate groundwater flow and selected groundwater-management scenarios in the Brunswick area, Georgia, 2004-2015: U.S. Geological Survey data release, https://doi.org/10.5066/P9RTSIJJ.
Summary
A previously published groundwater flow model (https://pubs.usgs.gov/sir/2005/5089/) was revised with refined grid spacing and updated hydrogeolgic framework and hydrologic properties (http://doi.org/10.3133/sir20155061) and used in this study to predict the effects of Upper Floridan aquifer (UFA) groundwater pumpage on horizontal hydraulic-head gradients in the upper-water-bearing zone of the UFA in the downtown Brunswick area, Glynn County, Georgia. The model used MOFLOW-2000 and was calibrated using groundwater-use information for October 2015, which was the basis for the 2015 Base Case simulation. A comparison of the 2015 Base Case simulation with seven groundwater-management scenarios evaluated potential changes to the upper-water-bearing [...]
Summary
A previously published groundwater flow model (https://pubs.usgs.gov/sir/2005/5089/) was revised with refined grid spacing and updated hydrogeolgic framework and hydrologic properties (http://doi.org/10.3133/sir20155061) and used in this study to predict the effects of Upper Floridan aquifer (UFA) groundwater pumpage on horizontal hydraulic-head gradients in the upper-water-bearing zone of the UFA in the downtown Brunswick area, Glynn County, Georgia. The model used MOFLOW-2000 and was calibrated using groundwater-use information for October 2015, which was the basis for the 2015 Base Case simulation. A comparison of the 2015 Base Case simulation with seven groundwater-management scenarios evaluated potential changes to the upper-water-bearing zone of the UFA near downtown Brunswick. Particle-tracking analysis, using MODPATH, provided pathlines and time-of-travel for the 2015 Base Case simulation and scenario C. This USGS data release contains all of the input and output files for the simulations described in the associated model documentation report (https://doi.org/10.3133/sir20195035).
This modified groundwater model was created to predict the effect of Upper Floridan aquifer groundwater pumpage on the upper water-bearing zone of the UFA near downtown Brunswick in Glynn County, Georgia. Simulated particle-tracking analyses can be used to identify and calculate time of travel from pumping centers backward toward recharge centers. The development of the model input and output files included in this data release are documented in the U.S. Geological Survey Scientific Investigations Report 2019-5035 (https://doi.org/10.3133/sir20195035).
Preview Image
Image of the model domain and active area of the model.