What's New

 USGS WaterAlert

 Data Center

•  Real-time data ()
  • Surface Water ()
  • Ground Water ()
  • Water Quality ()
  • Precipitation ()
  • More Data ()

•  Historical Data
  • Surface Water ()
  • Ground Water ()
  • Water Quality ()
  • Water Use
  • Annual Water Data Reports ()

•  WaterWatch ()
  • Floods | Droughts
  • Water Quality Watch
  • Current Conditions
    

    ---

  • Flood Tracking
  • Drought Watch

•  NWIS Data Services
  • NWIS Mapper ()
  • Water Data Explorer ()

 Information Center

• 2013 Flood Information
• Canoeing North Dakota's Rivers
• Devils Lake Basin
• Discovery Farms
• Education
• Lewis & Clark and the USGS
• Missouri River Basin
• North Dakota Wetlands
• Oil and Gas Resources
• Photo Gallery
• Red River Basin Flood Photos
• Webcams

 USGS in Your State

USGS Water Science Centers are located in each state.

 Connect with USGS

USGSND -

USGSND -

Publications

USGS News Releases

FAQs

 Expertise/Projects/Research Interests:

• Statistical analysis of hydrologic data, including parametric and nonparametric trend analysis, regression analysis, and cluster analysis
• Data mining including automated data retrieval and analysis, outlier detection, and data cleaning
• Web access log analysis including usage patterns and trends, analysis of sessionized logs and navigation paths, data aggregation methods such as the Porter Stemming Algorithm
• Graphical presentation of scientific data
• R - Open Source Statistical Software
• Data munging - converting and processing large amounts of data for analysis and reporting
• Relational database creation and manipulation
• Social Media

 Education:

• In progress, Doctorate of Philosophy, Environmental and Conservation Sciences - Environmental Science Track
  North Dakota State University, Fargo, North Dakota
  • The Honor Society of Phi Kappa Phi
• Master of Science, Statistics, 2006
  Colorado State University, Fort Collins, Colorado
  • Masters Project: Water-Quality Trend Analysis for the Devils Lake Basin, North Dakota, January 1965 through September 2003
• A.A.S, Computer Support Specialist, 2003
  Bismarck State College, Bismarck, North Dakota
• B.A., Mathematics, 1995
  Luther College, Decorah, Iowa
  • The Phi Beta Kappa Society
  • Pi Mu Epsilon - Honorary National Mathematics Society

• Graduate Certificate, Data Mining and Applications, 2008
  Stanford University, Stanford, California
• Certificate, Management, 1996
  University of Mary, Bismarck, North Dakota

 Publications:

• Ryberg, K.R., Lin, W., Vecchia, A.V., online, 2012, Impact of climate variability on runoff in the north central United States: Journal of Hydrologic Engineering, doi: 10.1061/(ASCE)HE.1943-5584.0000775 http://dx.doi.org/10.1061/(ASCE)HE.1943-5584.0000775
• Ryberg, K.R. and Vecchia, A.V., 2012, waterData---An R package for retrieval, analysis, and anomaly calculation of daily hydrologic time series data, version 1.0: U.S. Geological Survey Open-File Report 2012--1168, 8 p. -- URL http://pubs.usgs.gov/of/2012/1168/
• Hirsch, R.M. and Ryberg, K.R., online 2011, print 2012, Has the magnitude of floods across the USA changed with global CO2 levels? Hydrolological Sciences Journal, v. 57(1), http://www.tandfonline.com/doi/abs/10.1080/02626667.2011.621895 and http://www.usgs.gov/newsroom/article.asp?ID=3006
• Ryberg, K.R.; Vecchia, A.V.; Martin, J.D.; Gilliom, R.J., 2010, Trends in pesticide concentrations in urban streams in the United States, 1992-2008: U.S. Geological Survey Scientific Investigations Report 2010-5139, 101 p. -- URL http://pubs.usgs.gov/sir/2010/5139/
• Ryberg, K.R.; Emerson, D.G.; and Macek-Rowland, K.M., 2009, Solid precipitation measurement intercomparison in Bismarck, North Dakota, from 1988 through 1997: U.S. Geological Survey Scientific Investigations Report 2009–5180, 24 p. --URL http://pubs.usgs.gov/sir/2009/5180/.
• Ryberg, K.R.; Hiemenz, Gregory, 2009, Summary and analysis of water-quality data for the Arrowwood National Wildlife Refuge, east-central North Dakota, 1987-2004: U.S. Geological Survey Scientific Investigations Report 2009-5017, 92 p. -- URL http://pubs.er.usgs.gov/usgspubs/sir/sir20095017.
• Ryberg, K.R., 2008, PFReports: A program for systematic checking of annual peaks in NWISWeb: U.S. Geological Survey Open-File Report 2008-1284, 17 p. -- URL http://pubs.usgs.gov/of/2008/1284/.
• Ryberg, K.R., 2007, Continuous water-quality monitoring and regression analysis to estimate constituent concentrations and loads in the Sheyenne River, North Dakota, 1980-2006: U.S. Geological Survey Scientific Investigations Report 2007-5153, 22 p. -- URL http://pubs.usgs.gov/sir/2007/5153/.
• Ryberg, K.R., 2007, Summary and trend analysis of water-quality data for the Oakes Test Area, southeastern North Dakota, 1984-2004: U.S. Geological Survey Scientific Investigations Report 2007-5056, 118 p. -- URL http://pubs.usgs.gov/sir/2007/5056/.
• Ryberg, K.R.; Banse, T.A., 2007, Analysis of Central Region Water Science Center web access logs, August 1, 2006-July 31,2007: U. S. Geological Survey Internal Report, 15 vols, [variously paged].
• Ryberg, K.R.; Macek-Rowland, K.M.; Banse, T.A.; Wiche, G.J., 2007, A history of flooding in the Red River Basin: U.S. Geological Survey General Information Product 55, 1 sheet. -- URL http://pubs.usgs.gov/gip/2007/55/.
• Ryberg, K.R.; Macek-Rowland, K.M.; Wiche, G.J.; Klapprodt, L.A., 2007, 10th anniversary of the 1997 Red River flood: U.S. Geological Survey General Information Product 49, 1 sheet. -- URL http://pubs.water.usgs.gov/gip49/.
• Ryberg, K.R., 2006, Cluster Analysis of water-quality data for Lake Sakakawea, Audubon Lake, and McClusky Canal, Central North Dakota, 1990-2003: U.S. Geological Survey Scientific Investigations Report 2006-5202, 38 p. -- URL http://pubs.water.usgs.gov/sir2006-5202/.
• Ryberg, K.R., 2006, Continuous water-quality monitoring and regression analysis to estimate constituent concentrations and loads in the Red River of the North, Fargo, North Dakota, 2003-05: U.S. Geological Survey Scientific Investigations Report 2006-5241, 35 p. -- URL http://pubs.water.usgs.gov/SIR20065241.
• Ryberg, K.R.; Vecchia, A.V., 2006, Water-quality trend analysis and sampling design for the Devils Lake Basin, North Dakota, January 1965 through September 2003: U.S. Geological Survey Scientific Investigations Report 2006-5238, 64 p. -- URL http://pubs.usgs.gov/sir/2006/5238/.
• Ryberg, K.R.; Damschen, W.C.; Vecchia, A.V., 2005, Graphical user interface for accessing water-quality data for the Devils Lake Basin, North Dakota: U.S. Geological Survey Open-File Report 2005-1419, 15 p. -- URL http://pubs.water.usgs.gov/ofr20051419.
• Macek-Rowland, K.M.; Arntson, A.D.; Ryberg, K.R.; Dahl, A.L.; Leib, A., 2004, Water-use data for the Red River of the North Basin, North Dakota, Minnesota, and South Dakota, 1979-2001: U.S. Geological Survey Open-File Report 2004-1308, 255 p. -- URL http://pubs.water.usgs.gov/ofr20041308/.

 Links:

• Flood Tracking for North Dakota and neighboring basins
• Canoeing North Dakota's Rivers
• Lewis and Clark and the U.S. Geological Survey in North Dakota
• Stanford Data Mining and Applications Graduate Certificate Program
• Colorado State University - Fort Collins - Statistics Department
• North Dakota State University Environmental and Conservation Sciences Program

Organizational Chart