SPARROW: SPAtially Referenced Regressions on Watershed Attributes

National SPARROW Applications

SPARROW Fact Sheet

Nutrient Applications in the Chesapeake Bay Watershed

National data applied to the Chesapeake Bay watershed

Version 1.0, late 1980s TN & TP

• Preston, S.D., and Brakebill, J.W., 1999, Application of Spatially Referenced Regression Modeling for the Evaluation of Total Nitrogen Loading in the Chesapeake Bay Watershed. U.S. Geological Survey Water-Resources Investigations Report 99-4054 12p.

• Brakebill, J.W., and Preston, S.D., 1999, -Digital Data Used to Relate Nutrient Input to Water Quality in the Chesapeake Bay Watershed, Version 1.0. U.S. Geological Survey Open-File Report 99-60

• 1987 Nutrient-Input Source Data
  Late 1980s Nutrient Yield Estimates (Under Construction)

Version 2.0, early 1990's, TN & TP

• Brakebill, J.W., Preston, S.D., and Martucci, S.K., 2001, Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay, Version 2.0. U.S. Geological Survey Open-File Report OFR-01-251, accessed at URL http://md.usgs.gov/publications/ofr-01-251/index.htm

• 1992 Nutrient-Input Source Data

• Early 1990s Nutrient Estimates

• Brakebill, J.W., and Preston, S.D., A Hydrologic Network Supporting Spatially Referenced Regression Modeling in the Chesapeake Bay Watershed, EPA's EMAP Symposium 2001: Coastal Monitoring Through Partnerships, Environmental Monitoring and Assessment [81:1-3] 73-84 403p.

Version 3.0, late 1990s, TN & TP

• Brakebill, J.W., Preston, S.D., 2004, Digital Data Used to Relate Nutrient Inputs to Water Quality in the Chesapeake Bay, Version 3.0. U.S. Geological Survey Open-File Report OFR-2004-1433, accessed at URL http://md.water.usgs.gov/publications/ofr-2004-1433/

• 1997 Nutrient-Input Source Data

• Late 1990s Nutrient Estimates

• Late 1990's Nutrient Watershed Mapper

Version 4.0, Early 2000s, TN & TP

• Ator, S.W., Brakebill, J.W., and Blomquist, J.D., 2011 Sources, Fate, and Transport of Nitrogen and Phosphorus in the Chesapeake Bay Watershed: An Empirical Model, accessed at URL http://pubs.usgs.gov/sir/2011/5167/

• Total Nitrogen Decision Support

• Total Phosphorus Decision Support

Suspended Sediment Applications in the Chesapeake Bay Watershed

• Brakebill, John W., Scott W. Ator, and Gregory E. Schwarz, 2010. Sources of Suspended-Sediment Flux in Streams of the Chesapeake Bay Watershed: A Regional Application of the SPARROW Model. Journal of the American Water Resources Association (JAWRA) 46(4): 757-776. DOI: 10.1111/j.1752-1688.2010.00450.x

• Ator, Scott W., John W. Brakebill, and Gregory E. Schwarz, 2010. Mapping Vulnerability to Upland Erosion in the Chesapeake Bay Watershed. 2nd Joint Federal Interagency Conference, Las Vegas, NV., June 27 - July 1, 2010.

Maintainer: jwbrakeb@usgs.gov
Last modified: 18-July-2011 (jwb)