USGS Water Science Centers are located in each state.
Mississippi Embayment Regional Aquifer Study
Approach
The primary tool used to answer questions about ground-water availability will be a
ground-water flow model that will be constructed using existing data and input information
from each State in the area.
A major part of the project will include refinement of the hydrogeologic framework used
in previous models in the area, incorporating water-use data from each respective state
from predevelopment to present, and calibrating the model with available ground-water
level and streamflow information. Information from surficial geology maps, structure maps,
and geophysical logs of selected borings and wells in the area will be compiled. From these
data, a refined hydrogeologic framework and conceptual model will form the basis of the new
digital ground-water flow model.
Geophysical log showing
Natural gamma (in black)
Spontaneous potential (blue)
Long, short normal resistivity (red, dotted)
Borehole geophysics is one of the tools
hydrologists use to determine the depth
and thickness of aquifers.