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Follow Region 4 activities on social media, get contact information for Region 4 USGS centers, and meet Region 4's staff and center directors. 


Athena P Clark

Science Advisor & Tribal Liaison / USGS Coastal Storm Coordinator

Shelby Hunter

Safety & Occupational Health Specialist

Nathan A Smiley, CSP

Southeast Region Safety Manager

Gregory Steyer, Ph.D.

Science Adviser - Gulf of Mexico

Employee Directory

Job Title Name Email Phone
Regional Science Advisor - South Florida Nicholas Aumen 954-377-5917
Science Advisor & Tribal Liaison / USGS Coastal Storm Coordinator Athena P Clark 334-395-4141
Deputy Regional Director, Southeast Dianna M Hogan, Ph.D. 703-648-7240
Safety & Occupational Health Specialist Shelby Hunter 405-626-0295
Budget Analyst Susan W Jones 813-498-5009
Hydrologic Technician Evan Kilburn 217-328-9723
Physical Scientist Gregory (Everett) Lasher, Ph.D. 217-752-2031
Hydrologic Technician Sara Mitchell 712-323-8024
Regional Management Officer R. Scott Padgett 813-498-5026
Physical Scientist Isabelle (Izzy) Sophia Seten 217-328-9742
Southeast Region Safety Manager Nathan A Smiley, CSP 727-502-8071
Science Adviser - Gulf of Mexico Gregory Steyer, Ph.D. 225-939-5115
Physical Scientist Christina N Tenison 217-328-9715
Deputy Director for Science Kelly L Warner 217-328-9727
Regional Director, Southeast Holly Weyers 703-715-7020