Trenberth, K. E. 1999. Conceptual framework for changes of extremes of the hydrological cycle with climate change. Climatic Change 42:327–339.
Trenberth, K. E. 2011. Changes in precipitation with climate change. Climate Research 47:123–138.
U.S. Army Corps of Engineers. 2011. Fargo-Moorhead Metropolitan Area Flood Risk Management Supplemental Draft Feasibility Report and Environmental Impact Statement, April 2011.
USGS (U.S. Geological Survey). 2005. Streamflow Trends in the United States. USGS Fact Sheet 2005-3017. Reston, VA. http://pubs.usgs.gov/fs/2005/3017/ (March 2010).
Vörösmarty, C. J., C. Leveque, C. Revenga. 2005. Chapter 7: Fresh water. In: Millennium Ecosystem Assessment, Volume 1: Conditions and Trends Working Group Report (with R. Bos, C. Caudill, J. Chilton, E. M. Douglas, M. Meybeck, D. Prager, P. Balvanera, S. Barker, M. Maas, C. Nilsson, T. Oki, and C. A. Reidy). Island Press, Washington, D.C. 966 pp.