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C David Guzman


Assistant Professor 

Civil and Environmental Engineering

University of Massachusetts, Amherst

OFFICE:  21 Marston Hall

EMAIL: cdguzman AT


My research focuses on the soil and water resources at various scales within watersheds that contribute food, energy, water, and societal needs. Along with collaborators from a variety of disciplines, I am interested in soil surface dynamics, surface water quality degradation, and socio-hydrological development. I have a special interest in pursuing scholarship with a socio-hydrological perspective that benefits the local community, nation, and the world, including marginalized and underserved communities.


I have previously been involved in several projects at Washington State University in Professor Jan Boll's Laboratory. Research in Professor Boll's lab focuses on many scales and themes in hydrology from modeling catchment hydrology in the Palouse Region of Eastern Washington and Northern Idaho to characterizing stable isotopes in Costa Rica. 

The Soil and Water Lab of the Department of Biological and Environmental Engineering, Cornell University is an integrated, collaborative group of researchers with whom I conducted research in Ethiopia, Colombia, and Ithaca, NY under supervision of Professor Tammo Steenhuis. These projects entailed field research campaigns, soil sampling, hydrological modeling, and erosion risk mapping in the Amhara Region of Ethiopia with Bahir Dar University and Valle Del Cauca in Colombia with the International Center for Tropical Agriculture (CIAT)


  • Ph.D., Biological and Environmental Engineering, 2016, Cornell University

  • M.S., Biological and Environmental Engineering, 2011, Cornell University

  • B.S., Agricultural and Biological Engineering, 2009, University of Florida



Assessing Social Vulnerability and Understanding the Flood Risk Factors in Massachusetts 2021-2022 (UMass Amherst Institute of Diversity Sciences): PI: Christian Guzman, Co-PIs: Şalap-Ayça, Eve Vogel, Christine Hatch, Cielo Sharkus.

VIC-SNiP: Assimilating remotely sensed data to model water, Sediment, Nitrogen, and Phosphorous transport at continental scales 2021-2023 (National Aeronautics and Space Administration): PI: Dongmei Feng, Co-PIs: Christian Guzman, Colin Gleason. 

Water Quality in DCR Reservoirs 2020-2022 (Massachusetts Department of Conservation and Recreation, Division of Water Supply Protection): PI: Emily Kumpel, Co-PIs: Christian Guzman, John Tobiason

Understanding changing natural and human-altered watersheds in the Inland Pacific Northwest through isotope hydrology and urban-ecological resiliency 2020-2023 (US Department of Agriculture): PI: Christian Guzman 


  • 2018 USDA NIFA Postdoctoral Fellowship

  • 2016 CUAHSI Pathfinder Fellow Travel Support (Biennial Science Colloquium)

  • 2016 Cornell University Graduate School Diversity Advisory Council Member

  • 2015 Degree Marshal at the 147th Cornell University Commencement Ceremony

  • 2015 College of Agriculture and Life Science Alumni Grant

  • 2015 Cornell Diversity Programs in Engineering, Graduate Student of the Year

  • 2014 NSF GROW/USAID Research and Innovation Fellowship

  • 2013 US Borlaug Fellows in Global Food Security Program Award

  • 2013 Edward A. Bouchet Graduate Honor Society Inductee

  • 2012 CUAHSI Pathfinder Graduate Student Fellowship 

  • 2012 Cornell University Graduate School Research Travel Grant 

  • 2010 Food Systems and Poverty Reduction IGERT Fellow 

  • 2010 NSF Graduate Research Fellowship Program 

Cielo Sharkus


Doctoral Candidate

Civil and Environmental Engineering

University of Massachusetts, Amherst


EMAIL:  csharkus AT

Cielo is an imaginative engineer focused on combining her passion for environmental justice with analytical chemistry in order to expand the field of environmental engineering. She is focused on investigations into environmental degradation and water quality that aim to create novel bioremediation techniques. She earned her Bachelors of Science in Biochemistry with a minor in Environmental Studies from Worcester Polytechnic Institute. Recently, Cielo received an award from the National Academy of Engineers, where she was recognized as a grand challenge scholar, for her work on the grand challenge of providing clean water to the world. Cielo was given personal recognition by Worcester Polytechnic Institute (WPI) and WPI's president for her efforts intersecting science & engineering with multicultural perspectives and community work. You can find information about this program here and about Cielo's work here.


When she is not in the lab, Cielo enjoys being an active leader in the National Society of Black Engineers and mentoring undergraduate students. As an active outdoorswoman, Cielo also enjoys hiking, scuba diving, and swimming.


Petróleo en Ecuador: Crisis de Agua Limpia October 2018-Present
Yachana Foundation, Napo Ecuador

Fluorescent Colorants & Biomarker Technology June 2018-October 2018
Zürich University of Applied Sciences, Wädenswil, Switzerland.

Environmental Stewardship and Stormwater Education January 2018-May 2018
Department of Public Works, Fitchburg Massachusetts


  • B.S., Biochemistry , 2019, Worcester Polytechnic Institute (WPI)

  • M.S. Civil and Environmental Engineering, 2021, UMass Amherst


  • 2021 NSF NRT ELEVATE Fellow

  • 2021 Agents of Change Fellow

  • 2020 NECASC Fellow

  • National Academy of Engineers, Grand Challenge Scholar (2019)

  • 2019 UMass Graduate School Spaulding-Smith Fellow (2019)

  • Gilman International Scholar (2018)

  • GEM Fellowship Finalist (2018)

  • Louis Stokes Alliance for Minority Participation Scholar (2017)

  • Martin Luther King Scholar (2015)

  • African American Unity Scholar (2015)

Amanda Carneiro Marques 


Doctoral Candidate co-advised with Prof. Emily Kumpel

Civil and Environmental Engineering

University of Massachusetts, Amherst

OFFICE:  42 Marston Hall

EMAIL:  acarneiromar AT

Amanda Marques is currently pursuing her PhD in Environmental and Water Resources Engineering at the University of Massachusetts, Amherst. She received her Bachelor of Science in Water Resources and Environmental Engineering from Federal Fluminense University, Brazil, with a Minor Degree in Sustainability Studies from Roger Williams University. Amanda received her Master of Science in Civil and Environmental Engineering from Rio de Janeiro Federal University, Brazil. Her work there as a graduate research assistant was to investigate water demand and supply projections under climate change scenarios, aiming to come up with sustainable ways to manage multiple water uses within one of Brazil’s most challenging watershed. She started her PhD at UMass Amherst in the Spring of 2020. Her research will focus on water quality in the Wachusett and Quabbin reservoirs of the Commonwealth of Massachusetts. Amanda enjoys traveling, outdoor activities, cooking, and photography.


Wachusett Reservoir Water Quality Modeling, 2020-Present

Department of Conservation and Recreation, United States


Paraíba do Sul Watershed Management under Climate Change Scenarios, 2018-2020

Rio de Janeiro Federal University, Brazil


Paraíba do Sul River Environmental Flow Analyses, 2016-2017

Federal Fluminense University, Brazil


Scituate Reservoir Nutrient Runoff Project, 2016

Northern Rhode Island Conservation District, United States


Hydrological Behavior of the Mountainous Region of Rio de Janeiro, 2014-2015

Federal Fluminense University, Brazil


  • M.S., Civil and Environmental Engineering, Rio de Janeiro Federal University, Brazil

  • B.S., Water Resources and Environmental Engineering, Federal Fluminense University, Brazil

    • Minor in Sustainability Studies, Roger Williams University (RWU)


  • Sisson Fellow (2020-2021)

  • Graduate Fellowship (2018-2020, CAPES, Brazil)

  • Science Without Borders Scholarship (2015-2016, CAPES/Fulbright, United States)

  • Dean’s List (2015, Roger Williams University, United States)

  • Undergraduate Research Assistantship (2014-2015, CAPES, Brazil)

  • Youth Talents for Science Fellowship (2012-2013, CAPES, Brazil)

Tim Nsubuga


MS/PhD Student

Civil and Environmental Engineering

University of Massachusetts, Amherst

OFFICE:  42 Marston Hall

EMAIL:  tnsubuga AT

Timothy will be pursuing his MS and PhD in Environmental and Water Resources Engineering at the University of Massachusetts, Amherst starting Fall 2021. He received his Bachelor of Arts in Physics with a Minor Degree in Geoscience from the College of the Holy Cross, Worcester, Massachusetts. He became interested in Environmental and Water Resources Engineering after taking Introductory Physics 1,  Watershed Hydrology and desiring to apply his educational background. His research will focus on water quality modeling in the Connecticut River Floodplain. Timothy enjoys reading graphic novels, drawing, basketball, and football.



In June-July 2019, Timothy attended the National Science Foundation Research Experience for Undergraduates (NSF REU) program at Purdue University in West Lafayette, Indiana. He conducted research on analysis of Acoustic Waves during Simulation of Hydraulic Fracturing.



  • B.A, Physics, 2020, College of the Holy Cross

    • Minor in Geoscience



  • UMass Graduate School Spaulding-Smith Fellow (2021)

  • Sigma Pi Sigma (2020)

  • Physics Department Certificate of Recognition (2019)

  • John and Abigail Adams Scholarship (2015)

Amira Spikes


MS/PhD Student

Civil and Environmental Engineering

University of Massachusetts, Amherst

OFFICE:  42 Marston Hall

EMAIL:  aspikes AT

Amira received her Bachelor of Science degree from The Pennsylvania State University in Environmental Systems Engineering with a concentration in Health and Safety with a minor in Watersheds and Water Resourcing.  Her passion for water remediation began with Water Resource Engineering during an Upward Bound Math and Science (UBMS) field trip to a Wastewater treatment facility. She believes in collaborative and multidisciplinary research as the best approach in locating sustainable solutions within methods of water filtration in urban environments and is working to build connective systems that include stakeholder engagement. 
Amira is currently a member of the American Water Works Association (AWWA), National Society of Black Engineers (NSBE), and pursuing her Professional Engineering (PE) licensing. She enjoys reading, creative writing, tending to her garden, and endurance running in her free time.


•    Sustainable Solution System for Reduction of Food Waste
•    EME Summer Research Assistant Internship in the Department of Earth and Mineral Engineering
•    Solar Ecology & Solar Utility Laboratory Researcher
•    Feminist and Anti-Colonial Science Chair


  • B.S., Environmental Systems Engineering (ENVHS), The Pennsylvania State University, University Park

    • Minor in Watersheds and Water Resources


  • Perrell Felowship 2022

  • UMass Amherst College of Engineering Fellowship 2021

  • Rodney A. Erickson Discovery Grant (01/2019 - 08/2019)

  • Mary and Anthony Fiedorek Trustee Scholarship (08/2019 - 05/2020)

  • William and Estelle Turney Open Doors Scholarship (05/2020 – 05/2021)

  • Bill & Melinda Gates Foundation- Scholar (2015-Present)