Science Explorer
Exploring: San Pedro River
Ken Bagstad is a Research Economist working with the USGS’ Geosciences & Environmental Change Science Center in Denver. He uses GIS and modeling to quantify, map, and value ecosystem service flows across the United States and internationally. Ken is co-leading work to construct natural capital accounts in the United States...
Dr. Dickinson is a PI and groundwater specialist for hydrologic and climate research in the Southwest Region. Jesse's research focus is the impacts of climate change and variability on hydrologic systems and water resources nationwide. He develops and applies novel modeling and statistical approaches to develop physically-based...
Bruce Gungle is a hydrologist with the United States Geological Survey in Tucson. He spent the 1980s and early 1990s teaching creative writing and literature as a graduate student at the University of Arizona and as a high school teacher in Nagoya, Japan. He then returned to the University of Arizona as a student, earning a Master's degree in...
Jim O’Connor majored in Geological Science at University of Washington and earned M.S. and Ph.D. degrees at University of Arizona. Since 1991, he has worked at the U.S. Geological Survey, intent on improving understanding of the processes and events that shape the remarkable and diverse landscapes of the Pacific Northwest. 1....
Darius received a B.S. in Geology from The University of Minnesota (1995), an M.S. in Geology (emphasis in Geomorphology) from Northern Arizona University (1998), and a Ph.D. in Watershed Management (minor in Remote Sensing and Spatial Analysis) from The University of Arizona (2004). From 2004-2007, he was a postdoctoral fellow with the U.S....
Wayne R. Premo is a member of the Geosciences and Environmental Change Science Center in Denver, Colorado. Wayne obtained his undergraduate degree in Geology from the University of Colorado, Boulder in 1977 and his Master's Degree in Geology at the University of Kansas, Lawrence in 1984. Hired by the US Geological Survey in 1984, he...
I study geomorphology, soils and Quaternary stratigraphy to reconstruct paleoclimates over the past two and a half million years of geologic time. My main study areas are in the central and western USA (Mississippi Valley, Great Plains, Rocky Mountains, desert Southwest, Pacific Coast and Alaska), but I have also worked in the Caribbean,...
The Rim Fire has burned over 400 square miles of the Tuolumne River and Merced River watersheds in central California and is now the 3rd largest wildfire in state history. The burn area is largely on the Tuolumne between Hetch Hetchy Reservoir and Don Pedro Reservoir, both of which serve as critical sources of drinking water and irrigation water...
Jim joined the USGS Arizona Water Science Center in 2000. Since 2007, Jim has served as the Center’s Associate Director and Investigations Section Chief. Between 2000 and 2007, Jim worked first on a project in the Upper San Pedro Basin to quantify the groundwater and surface-water requirements of the riparian vegetation and later...
My research focuses on measuring and interpreting small changes in gravity as they relate to the hydrology of alluvial basins in the southwestern U.S. Current projects focus on the hydrology of the lower Colorado River, namely the lining of the All American Canal and environmental flood releases in the Colorado River Delta related to Minute...
PublicationsNorman, L., Brinkerhoff, F., Gwilliam, E., Guertin, D., Callegary, J., Goodrich, D.C., Nagler, P., Gray, F. 2015. Hydrologic response of streams restored with check dams in the Chiricahua Mountains. River Research and Applications. 1: 1-11. [Link]Callegary, J.B., Kikuchi, C.P., Koch, J.C., Lilly, M.R., and Leake, S.A., 2013,...
More than 22 million people live along Southern California’s coast, and many more migrate there every year. Faults and earthquake threats in this region have been heavily studied on land. USGS aims to boost our knowledge about faults on the seafloor, so they can be included in hazard assessments.
Protecting endangered species while managing economically important species is an ongoing naturalresource management challenge, especially in rivers. The USGS develops tools like biological/economic models to identify optimal strategies and economic and biological tradeoffs when adding nonnative species to rivers where endangered native species...
The USGS Community for Data Integration (CDI) funded Data at Risk (DaR) project preserved and released migratory bird survey data from 1989-1994 from the San Pedro River in Arizona.
We are working to investigate the most cost-efficient way to recharge the Sierra Vista sub-basin aquifer using rainwater harvesting in the tributaries of the San Pedro River using low-technology methods. Research is being conducted on the Babacomari Ranch, property of the Brophy family. The Walton Family Foundation (WFF) is supporting our research...
This is a release of data presented in the report "Binational Study of the Transboundary San Pedro Aquifer", Callegary and others, 2016: Callegary, J.B., Minjárez Sosa, I., Tapia Villaseñor, E.M., dos Santos, P., Monreal Saavedra, R., Grijalva Noriega, F.J., Huth, A.K., Gray, F., Scott, C.A., Megdal, S.B., Oroz Ramos, L.A.,...
Terry Slonecker is a Research Geographer with the USGS/Eastern Geographic Science Center. He specializes in remote sensing and other geospatial analyses of hazardous waste and other fugitive contaminants. His current research interest include VIS/NIR/FTIR spectroscopy and imaging spectroscopy, especially as it relates to hazardous substances...
Research geophysicist working on electrical imaging of volcanoes; mineral resource assessments in Central Asia and Venezuela; geologic mapping in Venezuela and Mexico; oil pollution tracking in the deep ocean, below the seafloor, and river bottom Superfund sites; geophysical archeological prospection, and...
As one of the largest and oldest science organizations in the world, USGS has produced more than a century of earth science data, much of which is currently unavailable to the greater scientific community due to inaccessible or obsolescent media, formats, and technology. Tapping this vast wealth of “dark data” requires 1) a complete inventory of...
Core Science Systems, Science Analytics and Synthesis (SAS), Community for Data Integration (CDI), Fort Collins Science Center, Great Lakes Science Center
Data files in this data series represent migrating bird count and habitat information collected during 1989, 1991, 1993, and 1994 field seasons at 13 riparian sites along the San Pedro River and its tributaries in southeastern Arizona, USA. At each site observations were made at up to 20 points, separated by 100 m arrayed along the riparian zone....