GeographyEmeritus Faculty - Professor of Emeritus
Physical Geography; Geoarchaeology in U.S. Great Plains and Midwest; Rivers and fluvial geomorphology; Holocene (post-glacial) alluvial stratigraphy and climate changes in U.S. Great Plains
Ph.D. University of Wisconsin-Madison (1986)
M.A. University of California-Davis (1981)
B.G.S. University of Kansas (1978)
Physical Geography (GEOG 1210) every semester
Recent Climate Change (GEOG 2210) every fall semester
Climatology (GEOG 4210/5210) every fall semester
Rivers (GEOG 4230/5230) every spring semester
Senior Seminar/Seminar: Water Resources (GEOG 4550/6550) every spring semester
Paleoindian geoarchaeology in the U.S. central Great Plains (eastern Colorado, Nebraska) and Midwest (Iowa, Wisconsin)
Holocene (post-glacial) climate changes and their impacts on vegetation, sediment-delivery to rivers, and river landforms
Historical climate changes
River landforms, floods, water quality, geoarchaeology in river valleys
Member of Departmental Seven-Year Review Committee (2014); Department of Geography Internship/Coop Coordinator (2010-present); Member of Cedar Falls Floodplain Ordinance Task Force (2010-2011)
May, D.W., and Holen, S.R. (2014). Early Holocene Alluvial Stratigraphy, Chronology, and Paleoindian/Early Archaic Geoarchaeology in the Loup River Basin, Nebraska, U.S.A.Quaternary International 342, 73-90.
Hill, M. G., Loebel, T. J., and May, D. W. (2014). The Carlisle Clovis Cache from Central Iowa. In Clovis Caches: New Discoveries and New Research (Bruce Huckell and David Kirby, Eds.), pp. 79-106. University of New Mexico Press.
May, D. W., Hill, M. G., and Rapson, D. R. 2011. Reinvestigation of the Cape Site, an "Early Man" Locality in Western Nebraska. Current Research in the Pleistocene 28 (28, 60-61).
Hill, M.G., Rapson, D.J., Loebel, T.J., and May, D.W. 2011. Late Paleoindian Site Structure and Activity Organization at a Long Term Residential Occupation in Western Nebraska. American Antiquity 76(4), 1-21.
Holen, S. R., May, D. W., and Mahan, S. A. 2011. The Angus Mammoth: A Decades-Old Scientific Controversy Resolved. American Antiquity 76(3), 487-499.
Oberle, A.P., Joseph, S., and May, D.W. 2010. Geospatial Technologies as a Vehicle for Enhancing Graduate Education and Promoting the Value of Geography in a Comprehensive University. 2010. Journal of Geography in Higher Education 34, 475-492.
Hill, M.G., May, D.W., Rapson, D.J., Loebel, T.J., and Theler, J.L. 2008. 2007 Excavations at the O.V. Clary Site, Ash Hollow, Garden County, Nebraska. Current Research in the Pleistocene 25, 93-95.
Hill, M.G., May, D.W., Rapson, D.J., Boehm, A.R., and Otarola-Castillo, E. 2008. Faunal Exploitation by Early Holocene Hunter/Gatherers on the Great Plains of North America: Evidence from the Clary Ranch Sites. Quaternary International 191, 115-130.
May, D.W., Hill, M.G., Holven, A.C., Loebel, T.J., Rapson, D.J., Semken, H.A., Jr., and Theler, J.L. 2008. Geoarchaeology of the Clary Ranch Paleoindian Sites, Western Nebraska. In Roaming the Rocky Mountains and Environs: Geological Field Trips: Geological Society of America Field Guide 10 (Robert G. Raynolds, Ed.), pp. 265-293. The Geological Society of America, Boulder.
Hill, M.G., May, D.W., Rapson, D.J., Loebel, T.J., and Theler, J.L. 2007. 2006 Investigations at the O.V. Clary Site, Ash Hollow, Garden County, Nebraska. Current Research in the Pleistocene 24, 100-102.
Johnson, W.C., Willey, K.L., Mason, J.A., and May, D.W. 2007. Stratigraphy and Environmental Reconstruction at the Middle Wisconsin Gilman Canyon Formation Type Locality, Buzzard’s Roost, Southwestern Nebraska, U.S.A. Quaternary Research 67, 474-486.
May, D. W. 2007. Landforms, Alluvial Stratigraphy, and Radiocarbon Chronology at Selected Paleoindian Sites Around Medicine Creek Reservoir. In The Allen Site: A Paleoindian Campsite in Southwestern Nebraska (Douglas Bamforth, Ed.), pp. 17-46. University of New Mexico Press, Albuquerque.
Muniz, M.P., Holen, S.R., and May, D.W. 2007. Results of Recent Survey Along the Arikaree River Drainage, Eastern Colorado. Southwestern Lore 73, 1-37.
Hill, M.G., May, D.W., and Rapson, D.J. 2006. A New, Stratified Late-Paleoindian Locality on the Clary Ranch, Ash Hollow, Garden County, Nebraska. Current Research in the Pleistocene 23, 124-125.
Johnson, W.C., May, D.W., Holen, S.R., and Willey, K.L. 2006. Magnetic Expression of the Late Pleistocene La Sena Mammoth Site, Southwestern Nebraska. Current Research in the Pleistocene 23, 187-189.
May, D. W., and Holen, S. R. 2005. Stratigraphy at the Jensen Mammoth Site in the Central Platte River Valley, Dawson County, Nebraska. Current Research in the Pleistocene 22, 87-89.
Splinter, D. K., Dahms, D. E., and D. W. May 2005. Soils and geomorphology of the lower Little Cedar River Valley, Northeast Iowa. Physical Geography 26, 52-68.
May, D. W. 2004. Age of Peoria Loess and Sand in Todd Valley, Lower Platte River Basin, Nebraska. Current Research in the Pleistocene 21, 122-124.
May, D. W. 2003. Properties of a 5500-year-old flood plain in the Loup River Basin, Nebraska. Geomorphology 56, 243-254.
May, D. W., and Holen, S. R. 2003. Late-Wisconsin and Holocene eolian stratigraphy at a buried Paleoindian site along the South Platte River Valley, Nebraska, U.S.A. Geoarchaeology: An International Journal 18, 145-159.
Hill, M. G., Hill, M. E., Jr., May, D. W., Myers, T. P., Rapson, D. J., Sellet, F., Theler, J. L., and Todd, L. C. 2003. 2001 investigations at the Clary Ranch site, Nebraska. Current Research in the Pleistocene 19, 32-34.
May, D.W. 2002. Stratigraphic studies at Paleoindian sites around Medicine Creek Reservoir. In Seventy Years of Archaeology in the Medicine Creek Valley of Nebraska (D. C. Roper, Ed.), pp. 37-53. University of Alabama Press, Tuscaloosa.
Holen, S. R. and May, D. W. 2002. The La Sena and Shaffert mammoth sites: History of investigations 1987-1998. In Seventy Years of Archaeology in the Medicine Creek Valley of Nebraska (D. C. Roper, Ed.), pp. 20-36. University of Alabama Press, Tuscaloosa.
Hill, M. G., Hill, M. E., Jr., May, D. W., Myers, T. P., Rapson, D. J., Sellet, F., Theler, J. L., and Todd, L. C. 2002. Paleoindian subsistence behavior at the Clary Ranch site, Nebraska, USA. Antiquity 76, 311-312.
May, D. W. 2000. Geoarchaeological research in Nebraska: A historical perspective. In Geoarchaeology in the Great Plains (Rolfe D. Mandel, Ed.), pp. 166-198. University of Oklahoma Press, Norman.