Real-time flow meter installed on a center-pivot irrigation well in Mississippi County, Arkansas as part of a cooperative project conducted between USGS and the Arkansas Natural Resources Commission. The meter will measure water use for irrigation, providing data which will help improve water-use information in other locations as well.
Drew A Westerman
Drew Westerman is a hydrologist for the U.S. Geological Survey Lower Mississippi-Gulf Water Science Center at Little Rock.
He has worked in water resource investigations of groundwater and surface water that have included multiple states and six countries. Project responsibilities have included web-application design, Python programing, water resource computer modeling, and a full range of Geographic Information Systems endeavors. Drew graduated from University of Arkansas at Little Rock with a Bachelors of Science in Physics and a Masters in Earth Sciences and GIS. Outside of work, Drew actively contributes to the field of speleology through his caving adventures.
Professional Experience
November 2010 – Present: Hydrologist/ Geographic Information (GIS) Specialist
January 2009 – November 2010: Hydrologist, U.S. Geological Survey
Principal investigator of hydrologic and unsteady-state hydraulic modeling project
Development of a groundwater flow model of the Mississippi River Valley alluvial aquifer of southeastern Arkansas
Development of a preliminary watershed model of the Tigris-Euphrates River system in Iraq using GeoSFM
Development of surface-water and lake hydrodynamics models that include the simulation of suspended sediments and nutrients
Visualization of surface-water model inputs and results
Computer system administration, through software applications assistance and code/script development
Education and Certifications
M.S., Integrated Science and Mathematics, University of Arkansas at Little Rock (UALR), 2009
Graduate Certificate, in Geospatial Technology, University of Arkansas at Little Rock, 2009
B.S., Physics with Geology minor, University of Arkansas at Little Rock, 2007
Science and Products
Challenges for creating a site-specific groundwater-use record for the Ozark Plateaus aquifer system (central USA) from 1900 to 2010
Hydrogeology and hydrologic conditions of the Ozark Plateaus aquifer system
Altitudes and thicknesses of hydrogeologic units of the Ozark Plateaus aquifer system in Arkansas, Kansas, Missouri, and Oklahoma
Lithology, hydrologic characteristics, and water quality of the Arkansas River Valley alluvial aquifer in the vicinity of Van Buren, Arkansas
Aquifers of Arkansas: protection, management, and hydrologic and geochemical characteristics of groundwater resources in Arkansas
Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011
Simulation of the June 11, 2010, flood along the Little Missouri River near Langley, Arkansas, using a hydrologic model coupled to a hydraulic model
Enhancements to the Mississippi Embayment Regional Aquifer Study (MERAS) groundwater-flow model and simulations of sustainable water-level scenarios
Analysis and inundation mapping of the April-May 2011 flood at selected locations in northern and eastern Arkansas and southern Missouri
Simulated effects of hydrologic, water quality, and land-use changes of the Lake Maumelle watershed, Arkansas, 2004–10
Simulation of the effects of groundwater withdrawals on water-level altitudes in the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas, 2007-37
Effects of Simulated Land-Use Changes on Water Quality of Lake Maumelle, Arkansas
Arkansas Water-Use Data Program
Arkansas Well Log Archive Database
Status of water resources within the Mississippi Alluvial Plain
Water Budget for the Mississippi Alluvial Plain
Enhanced Characterization of the MAP Groundwater System
Arkansas Water Use Program
Digitized Maps of the Potentiometric Surface of the Sparta Aquifer in North-Central Louisiana, 1886 to 2012 (ver. 1.1, April 2021)
Georeferenced Maps of the Thickness of the Sparta Aquifer in MS, AR, and LA, 1961 to 1996
Mississippi Alluvial Plain Extent, November 2017
Altitudes and Thicknesses of Hydrogeologic Units of the Ozark Plateaus Aquifer System in Arkansas, Kansas, Missouri, and Oklahoma
Groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010

Real-time flow meter installed on a center-pivot irrigation well in Mississippi County, Arkansas as part of a cooperative project conducted between USGS and the Arkansas Natural Resources Commission. The meter will measure water use for irrigation, providing data which will help improve water-use information in other locations as well.
Water Use Site Retrieval - Lower Mississippi Gulf Arkansas
Arkansas Waterwell
Science and Products
Challenges for creating a site-specific groundwater-use record for the Ozark Plateaus aquifer system (central USA) from 1900 to 2010
Hydrogeology and hydrologic conditions of the Ozark Plateaus aquifer system
Altitudes and thicknesses of hydrogeologic units of the Ozark Plateaus aquifer system in Arkansas, Kansas, Missouri, and Oklahoma
Lithology, hydrologic characteristics, and water quality of the Arkansas River Valley alluvial aquifer in the vicinity of Van Buren, Arkansas
Aquifers of Arkansas: protection, management, and hydrologic and geochemical characteristics of groundwater resources in Arkansas
Mean annual, seasonal, and monthly precipitation and runoff in Arkansas, 1951-2011
Simulation of the June 11, 2010, flood along the Little Missouri River near Langley, Arkansas, using a hydrologic model coupled to a hydraulic model
Enhancements to the Mississippi Embayment Regional Aquifer Study (MERAS) groundwater-flow model and simulations of sustainable water-level scenarios
Analysis and inundation mapping of the April-May 2011 flood at selected locations in northern and eastern Arkansas and southern Missouri
Simulated effects of hydrologic, water quality, and land-use changes of the Lake Maumelle watershed, Arkansas, 2004–10
Simulation of the effects of groundwater withdrawals on water-level altitudes in the Sparta aquifer in the Bayou Meto-Grand Prairie area of eastern Arkansas, 2007-37
Effects of Simulated Land-Use Changes on Water Quality of Lake Maumelle, Arkansas
Arkansas Water-Use Data Program
Arkansas Well Log Archive Database
Status of water resources within the Mississippi Alluvial Plain
Water Budget for the Mississippi Alluvial Plain
Enhanced Characterization of the MAP Groundwater System
Arkansas Water Use Program
Digitized Maps of the Potentiometric Surface of the Sparta Aquifer in North-Central Louisiana, 1886 to 2012 (ver. 1.1, April 2021)
Georeferenced Maps of the Thickness of the Sparta Aquifer in MS, AR, and LA, 1961 to 1996
Mississippi Alluvial Plain Extent, November 2017
Altitudes and Thicknesses of Hydrogeologic Units of the Ozark Plateaus Aquifer System in Arkansas, Kansas, Missouri, and Oklahoma
Groundwater withdrawal rates from the Ozark Plateaus aquifer system, 1900 to 2010

Real-time flow meter installed on a center-pivot irrigation well in Mississippi County, Arkansas as part of a cooperative project conducted between USGS and the Arkansas Natural Resources Commission. The meter will measure water use for irrigation, providing data which will help improve water-use information in other locations as well.
Real-time flow meter installed on a center-pivot irrigation well in Mississippi County, Arkansas as part of a cooperative project conducted between USGS and the Arkansas Natural Resources Commission. The meter will measure water use for irrigation, providing data which will help improve water-use information in other locations as well.