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   status_code: 200
   timestamp: '2023-09-30T17:05:30.124254'
   url: https://www.usgs.gov/staff-profiles/david-j-dean
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   education:
   - 'M.S., 2006-2009: Utah State University, Logan, UT.  Thesis: "A River Transformed:
     Historic Geomorphic Changes of the Lower Rio Grande in the Big Bend Region of
     Texas, Chihuahua, and Coahuila"'
   - 'B.A., 1997-2001: University of St. Thomas, St. Paul, MN, majors in geology
     and geography'
   email: djdean@usgs.gov
   expertise_terms:
   - hydrology
   - geomorphology
   - sediment transport
   - dams
   - sedimentation and erosion
   - sedimentology
   - sediment grain size
   - sediment supply
   - sand storage
   - sandbar deposition
   - sand budgets
   - Colorado River
   - Little Colorado River
   - Moenkopi Wash
   - Rio Grande
   - Green River
   - Chippewa River
   - Yampa River
   - Grand Canyon
   - Marble Canyon
   - Canyonlands National Park
   - Dinosaur National Monument
   honors: []
   intro_statements:
   - David Dean studies hydrology, geomorphology, and sediment transport of rivers
     in arid and semi-arid ecosystems.
   name: David J Dean
   name_qualifier: null
   orcid: 0000-0003-0203-088X
   organization_link: https://www.usgs.gov/centers/southwest-biological-science-center
   organization_name: Southwest Biological Science Center
   personal_statement: 'As a research hydrologist with the GCMRC and SBSC, I conduct
     original research linking hydrology and sediment transport to fluvial geomorphic
     processes.  My research is conducted in the Rio Grande in the Big Bend region
     of far west Texas, the Green and Yampa Rivers in Dinosaur National Monument,
     the Green and Colorado Rivers in Canyonlands National Park, the Little Colorado
     River and its tributaries in northern Arizona, and the Colorado River in Grand
     Canyon National Park. My research aims to quantify how hydrologic and geomorphic
     processes respond to factors such as climate change, large-scale water development
     and management, the widespread establishment of non-native riparian plants,
     and anthropogenic modifications to fluvial bottomlands. All of these perturbations
     directly affect how water and sediment are routed through fluvial drainage networks,
     which controls the geomorphic behavior, and biologic processes of these river
     systems.Much of my work incorporates the use of acoustic instrumentation to
     passively monitor suspended-sediment transport processes on rivers with high
     suspended-sediment loads.  This work is paired with measurements of geomorphic
     change using a variety of data and techniques including: high-resolution topographic
     data collected with real-time-kinematic GPS and LIDAR, aerial imagery, and analysis
     of historical hydrologic and geomorphic data. My work is directly relevant to
     the primary scientific understanding of the hydrologic and geomorphic behavior
     of these rivers, as well as the management actions that may help mitigate fluvial
     perturbations that have occurred.  My work also focuses on the biogeomorphic
     interactions between stream flow, sediment transport, and riparian vegetation,
     and how those interactions can result in negative and/or positive feedbacks
     of geomorphic change.'
   professional_experience:
   - '2014 - present: Research Hydrologist, USGS Southwest Biological Science Center,
     Grand Canyon Monitoring and Research Center'
   - '2009 - 2014: Research Associate/Lab Manager, Department of Watershed Sciences,
     Geomorphology Lab, Utah State University'
   - '2006: Staff Scientist, StreamLab 2006, National Center for Earth Surface Dynamics,
     Saint Anthony Falls Laboratory, University of MN'
   - '2005: Laboratory Instructor, Environmental Geology, University of Saint Thomas,
     St. Paul, MN'
   - '2002, 2004, 2006: Instructor, Geologic Field Camp in Southeastern U.S., University
     of Saint Thomas, St. Paul, MN'
   - '2002 - 2004: Staff Geologist, Meisch & Associates, Ltd., Environmental Consultants,
     Oakdale, MN'
   title: Research Hydrologist