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The main office for the Maryland-Delaware-DIstrict of Columbia Water Science Center is located in Catonsville, MD with field offices in Dover, DE and Frostburg, MD. Our staff consists of scientists, technicians, and support personnel who are committed to providing accurate and timely information to MD, DE, DC, and the Nation.


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Employee Directory

Job Title Name Email Phone
Hydrologist/Water Quality Specialist Scott Ator 443-498-5564
Supervisory Hydrologic Technician Matt Baker 301-707-5491
Supervisory Hydrologic Technician Brian Banks
Hydrologic Field Assistant Nicole Bellmyer 443-498-5500
Hydrologic Technician Eric Boyd 301-687-0919
Deputy Director, Integrated Modeling and Prediction Division John Brakebill 443-498-5557
Hydrologic Technician James Broadwater 301-687-0919
Ext: 13
Hydrologic Technician David Brower 443-498-5547
Research Oceanographer Jenna Brown, PhD 302-213-5071
Hydrologic Technician Michael Brownley 302-213-5055
Hydrologic Technician Michael Clark 301-687-0919
Ext: 11
Hydrologist Cheryl Dieter 443-883-0761
Hydrologist Rosemary M Fanelli, Ph.D. 919-571-4036
Center Director Mary Kay Foley, P.E., PMP 443-498-5501
Hydrologic Technician Michael Geissel 443-498-5522
Research Hydrologist Allen C Gellis, Ph.D. 443-498-5581
Chemist Durga Ghosh 410-267-5750
Physical Scientist Lillian E Gorman Sanisaca 443-498-5546
Hydrologic Technician A.J. Greise 301-687-0919
Ext: 14
Supervisory Geographer Natalie C Hall, PhD
Hydrologist John C. Hammond, PhD 443-498-5568
Pathways Student Hydrologic Technician Logan Jeffries 301-687-0919
Administrative Officer (Acting) Joseph P Jenkins 443-498-5512
Hydrologic Technician Jeffrey E Klein 443-833-5775
Supervisory IT Specialist Gwen Kvech 443-498-5533
Geographer Andrew E LaMotte 443-498-5549
Web Developer/Digital Content Manager Lonnie R. Lanham 443-498-5599
Hydrologic Technician Todd Lester 410-422-2489
Hydrologic Technician Christopher R Lewis 302-213-5056
Research Hydrologist Michelle Lorah 443-498-5601
Hydrologist Emily H Majcher, PE 443-498-5520
Supervisory Hydrologic Technician Brenda Majedi 443-498-5527
Hydrologic Technician Jeremy Malen 443-285-9059
Hydrologic Technician Elizabeth Marchand 443-498-5500
Hydrologic Technician Brett Mcfarland 443-498-5664
Student of Hydrology Kelly McVicker 443-498-5500
Hydrologic Technician Fisseha Mengistu 443-498-5532
Physical Scientist Marina Metes 443-498-5576
Supervisory Geographer Mark R Nardi 302-213-5057
Hydrologist Trevor P Needham, PhD 443-498-5584
Supervisory Hydrologist Matthew G Pajerowski 443-498-5506
Hydrologic Technician Sarah Queen 443-743-0283
Hydrologist/Groundwater Specialist Jeff P Raffensperger, Ph.D. 443-498-5542
Physical Scientist Betzaida Reyes
Hydrologic Technician Ashley M Ryan 443-498-5694
Physical Scientist Andrew Sekellick 443-498-5580
Physical Scientist Alexander Soroka 302-734-2506
Ext: 224
Hydrologic Field Assistant Leah E. Staub 240-470-0870
Physical Scientist Breck M Sullivan 443-498-5500
Supervisory Hydrologic Technician Anthony Tallman 302-213-5061
Chesapeake Bay Monitoring Coordinator/Acting Deputy Director (Detail 2020) Peter Tango, Ph.D. 443-510-0486
Hydrologic Technician John Tapscott 443-498-5500
Associate Director for Data Charles Walker, Ph.D. 443-498-5523
Deputy Center Director Ethan Weikel, P.G. 443-498-5543
Geographer/GIS Specialist Michael E Wieczorek 443-498-5550