Eastern Geographic Science Center





 

Team
Contact
Dr. Dianna Hogan
Research Physical Scientist
dhogan@usgs.gov
703-648-7240


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Dianna Hogan


Dianna Hogan, Ph.D., has been a Research Physical Scientist with the USGS EGSC since 2005. Her work focuses on (1) urban land use, stormwater management, and effects on stream hydrology and chemistry; and (2) ecosystem services, including the effects of changing land use on service provision, and the use of ecosystem services concepts in natural resource and land use decision making. Dianna holds a Ph.D. in Environmental Science and Policy and a M.A. in Biology from George Mason University, and a B.S. in Biochemistry from the Wichita State University. During her spare time, Dianna enjoys hiking and biking.

Visit Dianna's USGS Professional Page to learn more about her research.






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Aditi Bhaskar


Aditi Bhaskar, Ph.D., joined the USGS EGSC in the fall of 2014 as a National Science Foundation Earth Sciences Postdoctoral Fellow funded to evaluate the effects of distributed stormwater management on groundwater recharge and stream base flow. Aditi holds a Ph.D. in Environmental Engineering from the University of Maryland, Baltimore County and a B.S. in Geophysics from Brown University.

Visit Aditiís website to learn more about her research.






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Chris Wright


Chris became a part of the USGS EGSC in the spring of 2014. He focuses on an exploration of the human health impacts of the use of GI, and is part of the field team lead for the Great Dismal Swamp (GDS) Carbon Project. Chrisí educational background includes degrees in the History of Science, Medicine, & Technology (B.A.), Nursing (B.S.), and Environmental Sciences and Policy (M.S.), all from Johns Hopkins University. During his spare time, Chris is an avid hiker, biker, and paddler of Marylandís scenic paths and waterways.







Photo of Natalie Hall

Natalie Hall


Natalie joined the USGS EGSC in spring 2014. Her work evaluates the impacts of the use of Green Infrastructure (GI) on stream water quality and flow, and the potential for microbial denitrification. Natalie has a B.A. in Languages and Politics and a M.A. in International Politics (Strategic Studies) from the University of Pretoria in her native South Africa. She is currently a Ph.D. candidate in Environmental Science and Policy at George Mason University.







Photo of Krissy Hopkins

Krissy Hopkins


Krissy Hopkins, Ph.D., has been a Research Physical Scientist with the USGS EGSC since 2016. Her research focuses on understanding the impacts of urbanization on rivers and streams by examining how the intensity and type of development impacts water quality and quantity. Krissy holds a Ph.D. in Geology from the University of Pittsburgh and a B.S. in Biology/Environmental Science and Geography from Syracuse University.

Visit Krissy's USGS Professional Page to learn more about her research.







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Joshua Simon


Josh joined USGS EGSC in June of 2015. He assists in the field and lab with the Best Management Plan (BMP) project and he assists with field work at the Great Dismal Swamp (GDS) Carbon Project. He is currently attending George Mason University for his undergrad in Environmental Science and a minor in Geographic Information Systems. Josh is interested in working in Environmental Restoration and Remediation for a career one day and he also hopes to volunteer in 3rd world countries after college to help develop sustainable agriculture systems. Amongst his many hobbies he is a talented musician playing snare drum in the GMU Fifes and Drums and an avid Outdoors person. You can find him backpacking throughout the George Washington National Forest regularly during the spring, summer, and fall months.





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Stephanie Sparkman


Stephanie has been with the USGS EGSC since 2012 and was appointed a Geographer position in July 2015. Her research is focused on evaluating the cost benefit of conventional (traditional, centralized) stormwater BMP design as compared to low impact development (LID) SW BMP design (novel, green engineering, decentralized). Stephanie holds a M.S. in Geographic and Cartographic Science from George Mason University and a B.S. in Environmental Science from Virginia Tech.

Visit Stephanie's USGS Professional Page to learn more about her research.






Photo of Hilina Tarekegn

Hilina Tarekegn


Hilina joined the USGS EGSC in summer 2015 as a student intern. She has earned a degree in Environmental Science and Technology (B.S.) with a minor in GIS from the University of Maryland, College Park. She supports the BMP team in the field with sample and data collection as well as lab work and data processing. In addition, she is a GIS technician focusing on producing updated Land Use Land Cover (LULC) information for multiple sites under evaluation.








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Brianna Williams


Brianna Williams started as a student intern in the EGSC in May 2011, and currently holds the position of Physical Scientist for several projects. In addition to contributing to field and lab work on the stormwater BMP projects, Brianna is the primary GIS support, focusing on the organization and acquisition of data and imagery, and producing updated Land Use Land Cover (LULC) information for multiple sites under evaluation. She currently resides in Philadelphia and sits at the New Jersey Water Science Center near Princeton. Brianna holds two degrees in Geography with specific focus areas: B.S. - Penn State (GIS); M.S. - Texas A&M (Coastal Geomorphology).






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Photo of Dan Jones

Dan Jones


Dan joined the USGS EGSC in 2012, and has earned degrees in Geography and Environmental Science (B.S. and M.S) from the University of Maryland, Baltimore County. His research explores development-induced topographic modifications and their associated geomorphic and hydrologic impacts. Central to this work is the use of LiDAR data and field surveys to map, model, and track changes through time. Dan also leads work in the Environmental Quality and Contaminants aspect of the USGS Hurricane Sandy science and recovery efforts. Dan spends his off hours hiking and rock climbing.

Visit Dan's USGS Professional Page to learn more about his research.



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