Kristina Hopkins


Krissy Hopkins studies the impacts of urbanization on rivers and streams, focused on understanding how the intensity and type of development impacts water quality and quantity. This includes examining the impacts of different types of stormwater management strategies, both conventional and infiltration-based (i.e., green infrastructure), on watershed hydrology and nutrient fluxes. Her work also focuses on translating ecosystem functions into ecosystem services and values by applying ecosystem services approaches to floodplain systems and green stormwater infrastructure.

Krissy received an undergraduate degree in biology/environmental science and geography from Syracuse University in 2007. She completed her Ph.D. in geology at the University of Pittsburgh in 2014 and completed a post-doctoral fellowship at the National Socio-Environmental Synthesis Center (SESYNC) in Annapolis, Maryland. She joined the U.S. Geological Survey in 2016 as a Research Physical Scientist.



  • Assessing hydrologic, chemical, and geomorphic changes associated with urban development.
  • Assessing the effectiveness of urban stormwater management practices. 
  • Developing geospatial tools to map stream channel and floodplain characteristics at regional scales.
  • Quantifying and valuing the ecosystem services that floodplains provide to people. 



Ph.D. 2014, Geology and Environmental Science, University of Pittsburgh, Pittsburgh, PA

Dissertation: From small watersheds to regions: Variation in hydrologic response to urbanization

B.S. 2007 Biology/Environmental Science (2nd Major Geography), Syracuse University, Syracuse, NY



2017 - Present, Research Physical Scientist, South Atlantic Water Science Center, U.S. Geological Survey, Raleigh, NC.

2016 - 2017, Research Physical Scientist, Eastern Geographic Science Center, U.S. Geological Survey, Reston, VA.

2014 - 2016, Postdoctoral Fellow, National Socio-Environmental Synthesis Center, University of Maryland, Annapolis, MD.



Bhaskar, A.S., K.G. Hopkins, B.K. Smith, T.A. Stephens, A.J. Miller. 2020. Hydrologic signals and surprises in U.S. streamflow records during urbanization, Water Resources Research, Early View,

Noe, G.B., M. Cashman, K. Skalak, A. Gellis, K. Hopkins, D. Moyer, J. Webber, A. Benthem, K. Maloney, J. Brakebill, A. Sekellick, M. Langland, Q. Zhang, G. Shenk, J. Keisman, C. Hupp, and D. Hogan. 2020. Sediment dynamics and implications for management: state of the science from long-term research in the Chesapeake Bay watershed, USA. WIREs Water; 7:e1454.

Bell, C.D.,  J.M. Wolfand, C.L. Panos, A.S. Bhaskar, R.L. Gilliom, T.S. Hogue, K.G. Hopkins, A.J. Jefferson. 2020. Stormwater control impacts on runoff volume and peak flow: A meta‐analysis of watershed modeling studies. Hydrological Processes, 34 (14): 3134-3152.

Hopkins, K.G., Ahmed, L., Metes, M.J., Claggett, P.R., Lamont, S., and Noe, G.B, 2020, Geomorphometry for Streams and Floodplains in the Chesapeake and Delaware Watersheds: U.S. Geological Survey data release,

Mullins, A.R., D.J. Bain, E. Pfeil-McCullough, K.G. Hopkins, S. Lavin, E. Copeland. 2020. Seasonal drivers of chemical and hydrological patterns in roadside infiltration-based green infrastructure. Science of the Total Environment, 714: 136503.

Hopkins, K.G., A.S. Bhaskar, S.A. Woznicki, R.M. Fanelli. 2020. Changes in event‐based streamflow magnitude and timing after suburban development with infiltration‐based stormwater management. Hydrological Processes, 34 (2): 387-403.

Lamont, S., L. Ahmed, M.J. Metes, P. Claggett, K.G. Hopkins, G.B. Noe. 2019. Floodplain and Channel Evaluation Tool (FACET). Version 0.1.0. [Software release]. U.S. Geological Survey. DOI:

Woznicki, S.A., and Hopkins, K.G., 2019, Land Use Land Cover for Selected Basins in Clarksburg, Montgomery County, MD: U.S. Geological Survey data release:

Bradley,  P.M., C.A. Journey, J.P. Berninger, D.T. Button, J.M. Clark, S.R. Corsi, L.A. DeCicco, K.G. Hopkins, B.J. Huffman, N. Nakagaki, J.E. Norman, L.H. Nowell, S.L. Qi, P.C. VanMetre, I.R. Waite, 2019. Mixed-chemical exposure and predicted effects potential in wadeable southeastern USA streams. Science of the Total Environment, 655: 70-83.

Rowley, T.H., Hopkins, K.G., and Terziotti, S., 2018, Geomorphological Features of North Carolina: U.S. Geological Survey data release,

Hopkins, K.G., G.B. Noe, F. Franco, E.J. Pindilli, S. Gordon, M.J. Metes, P.R. Claggett, A.C. Gellis, C.R. Hupp, D.M. Hogan. 2018. A method to quantify and value floodplain sediment and nutrient retention ecosystem services. Journal of Environmental Management, 220: 65-76.

Hopkins, K.G., Lamont, S., Claggett, P.R., Noe, G.B., Gellis, A.C., Lawrence, C.B., Metes, M.J., Strager, M.P., and Strager, J.M., 2018, Stream Channel and Floodplain Metric Toolbox: U.S. Geological Survey data release,

Hopkins, K.G., N.B. Grimm, A.M. York. 2018. Influence of governance structure on green stormwater infrastructure investment. Environmental Science and Policy, 84: 124-133.

Hopkins, K.G. and D.J. Bain. 2018. Mapping spatial patterns in sewer age, material, and proximity to surface waterways to infer sewer leakage hotspots. Landscape and Urban Planning, 170: 320-324.

Jefferson, A.J., A.S. Bhaskar, K.G. Hopkins, R. Fanelli, P.M. Avellaneda, S.K. McMillan. 2017. Stormwater management network effectiveness and implications for urban watershed function: A critical review. Hydrological Processes, 31 (23): 4056-4080.

Hopkins, K.G., J.V. Loperfido, L.S. Craig, G.B. Noe, D.M. Hogan. 2017. Comparison of sediment and nutrient export and runoff characteristics from watersheds with centralized versus distributed stormwater management. Journal of Environmental Management, 203 (1): 286–298.

Sparkman, S.A., D.M. Hogan, K.G. Hopkins, J.V. Loperfido. 2017 Modeling watershed-scale impacts of stormwater managment with traditional versus low impact development design. Journal of the American Water Resources Association,  53 (5): 1081-1094.

A.Y. Chan and K.G. Hopkins. 2017. Case study: Associations between socio-demographics and green infrastructure placement in Portland, Oregon. Journal of Sustainable Water in the Built Environment. 3 (3).

Utz, R.M., K.G. Hopkins, L. Beesley, D.B. Booth, R.J. Hawley, M.E. Baker, M.C. Freeman, K.L. Jones. 2016. Ecological resistance in urban streams: the role of natural and legacy attributes. Freshwater Science, 35 (1): 380-397.

Hopkins K.G., N.B. Morse, D.J. Bain, N.D. Bettez, N.B. Grimm, J.L. Morse, M.M. Palta, W.D. Shuster, A.R. Bratt, A.K. Suchy. 2015. Assessment of variation in stream flow responses to urbanization and the persistence of physiographyEnvironmental Science and Technology, 49 (5): 2724-2732.

Hopkins K.G., N.B. Morse, D.J. Bain, N.D. Bettez, N.B. Grimm, J.L. Morse, M.M. Palta. 2015. Type and timing of stream flow changes in urbanizing watersheds in the Eastern U.S. Elementa: Science of the Anthropocene, 3 (56): 1-14.

Hopkins, K.G., D.J. Bain, and E.M. Copeland. 2014. Reconstruction of a century of landscape modification and hydrologic change in a small urban watershed in Pittsburgh, PALandscape Ecology, 29 (3): 413 – 424. 

D.J. Bain, E. Copeland, M. Divers, M. Hecht, K.G. Hopkins, J. Hynicka, M. Koryak, M. Kostalos, L. Brown, E. Elliott, J. Fedor, M. Gregorich, B. Porter, B. Smith, C. Tracey, M. Zak. 2014. Characterizing a Major Urban Stream Restoration Project: Nine Mile Run (Pittsburgh, PA, USA)Journal of the American Water Resources Association, 50 (6): 1608-1621.