Michael E. Wieczorek Andrew E. LaMotte 2010 tabular digital data Digital Data Series DS-491-17 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?mrb_e2rf1_nutrients This tabular data set represents the total amount of nitrogen and phosphorus, in kilograms for the year 2002, compiled for every MRB_E2RF1 catchment of the Major River Basins (MRBs, Crawford and others, 2006). The source data set is County-Level Estimates of Nutrient Inputs to the Land Surface of the Conterminous United States, 1982-2001 (Ruddy and others, 2006). The MRB_E2RF1 catchments are based on a modified version of the U.S. Environmental Protection Agency's (USEPA) ERF1_2 and include enhancements to support national and regional-scale surface-water quality modeling (Nolan and others, 2002; Brakebill and others, 2011). Data were compiled for every MRB_E2RF1 catchment for the conterminous United States covering New England and Mid-Atlantic (MRB1), South Atlantic-Gulf and Tennessee (MRB2), the Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy (MRB3), the Missouri (MRB4), the Lower Mississippi, Arkansas-White-Red, and Texas-Gulf (MRB5), the Rio Grande, Colorado, and the Great basin (MRB6), the Pacific Northwest (MRB7) river basins, and California (MRB8). This tabular data set was created and used by the U.S. Geological Survey (USGS) specifically to estimate nitrogen and phosphorus inputs from manure and fertilizer, per watershed segment in the application of the national SPAtially Referenced Regression On Watershed attributes (SPARROW) model . The SPARROW model relates in-stream water-quality measurements to spatially referenced characteristics of watersheds, including contaminant sources and factors influencing terrestrial and stream transport. The model empirically estimates the origin and fate of contaminants in streams, and quantifies uncertainties in these estimates based on model coefficient error and unexplained variability in the observed data. For more information on the USGS SPARROW model please refer to: http://water.usgs.gov/nawqa/sparrow/intro/intro.html. 2002 publication date Complete None planned -127.910792 -65.327751 51.657387 23.243486 None Nutrients Inlandwaters MRB_E2RF1 MRB_E2RF1WS Catchment NAWQA SPARROW None Conterminous United States MRB Major River Basins MRB1 NEMA New England and Mid-Atlantic MRB2 SAGT South Atlantic-Gulf and Tennessee MRB3 GLMR Great Lakes, Ohio, Upper Mississippi, and Souris-Red-Rainy MRB4 MORI Missouri MRB5 LMTG Lower Mississippi, Arkansas-White-Red, and Texas-Gulf MRB6 COGB Rio Grande, Colorado, and Great Basin MRB7 PANW Pacific Northwest MRB8 CALI California None None U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html http://water.usgs.gov/GIS/browse/mrb_e2rf1_nutrients.jpg Illlustration of data set JPG Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 Charles G. Crawford Pixie A. Hamilton Anne B. Hoos October 5, 2006 Reston, Virginia U.S. Geological Survey Prepared by Charlie Crawford, Pixie Hamilton, and Anne Hoos for a NAWQA National Liaison Meeting, Washington D.C., October 5, 2006. http://water.usgs.gov/nawqa/studies/mrb/mrb_factsheet.pdf None None Jacqueline V. Nolan John W. Brakebill Richard B. Alexander Gregory E. Schwarz Febuary 22, 2002 vector digital data USGS Open-File Report USGS Open-File Report 02-40 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?erf1_2 online 2002 publication date ERF1_2 The modified version of the source data provided a reach network to construct reach catchments for MRBs and subsequent processing (J.W. Brakebill, U.S. Geological Survey, written commun., 2008). John W. Brakebill Silvia E. Terziotti 20110222 vector digital data General Information Web Only Baltimore, MD U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?mrb_e2rf1 online 2011 publication date MRB_E2RF1 The source data provided a reach network to construct reach catchments for MRBs and subsequent processing. John W. Brakebill Silvia E. Terziotti 20110222 raster digital data General Information Web Only Baltimore, MD U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?mrb_e2rf1ws online 2011 publication date MRB_E2RF1WS The source data provided reach catchments for MRBs and subsequent processing. LaMotte, Andrew E. 2008 raster digital data Data Series DS-383A Reston, VA U.S. Geological Survey http://water.usgs.gov/GIS/metadata/usgswrd/XML/nlcd01_1.xml online 2008 publication date NLCD01 The source data provided land cover information. LaMotte, Andrew E. 2008 raster digital data Data Series DS-383B Reston, Virginia U.S. Geological Survey http://water.usgs.gov/GIS/metadata/usgswrd/XML/nlcd01_2.xml online 2008 publication date NLCD01 The source data provided land cover information. LaMotte, Andrew E. 2008 raster digital data Data Series DS-383C Reston, Virginia U.S. Geological Survey http://water.usgs.gov/GIS/metadata/usgswrd/XML/nlcd01_3.xml online 2008 publication date NLCD01 The source data provided land cover information. LaMotte, Andrew E. 2008 raster digital data Data Series DS-383D Reston, Virginia U.S. Geological Survey http://water.usgs.gov/GIS/metadata/usgswrd/XML/nlcd01_4.xml online 2008 publication date NLCD01 The source data provided land cover information. Ruddy, Barbara C. Lorenz, David L. Mueller, David K. 2006 tabular digital data Scientific Investigations Report 2006-5012 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/nawqa-only/nuts/data/fertrev08/reports/report_sir2006_5012.pdf online 2006 publication date nuts The source information provided data on nutrients. Acquired fertilizer and manure data tabulated by crop type and county from http://water.usgs.gov/nawqa-only/nuts/data/fertrev08 NLCD 2001 (LaMotte, 2008) was used to spatially apportion the tabular data. The following table describes the NLCD2001 classes used for each nutrient variable category of Nitrogen (N) and Phosphorus (P). Nutrient inputs LU Data Set LU Classes used to apportion nutrient inputs ---------------------------------------------------------------------------------------------- Farm fertilizer NLCD2001 81, 82 ---------------------------------------------------------------------------------------------- Non-farm fertilizer NLCD2001 21, 22, 23 ---------------------------------------------------------------------------------------------- Manure- unconfined NLCD2001 71, 81, 82 ---------------------------------------------------------------------------------------------- Manure-confined NLCD2001 81, 82 Process Steps: 1) Resampled MRB_E2RF1WS catchment GRID to 30-meter to match NLCD01 resolution. 2) A nutrient intensity value was calculated for each county for Nitrogen and Phosphorus for each grouping above. To spatially apportion this value, a Nutrient_Intensity per GRID cell was calculated this way: Nutrient Intensity (kilograms) per GRID cell = Total kilograms of Nitrogen or Phosphorus for county/number of farm, non-farm, confined, or unconfined GRID cells per county. The resulting GRID is 30-meter resolution of nutrients in kilograms per 30-meter grid cell. 3) Summarized total nutrients by catchment using the ZONALSUM command in GRID. 4) Exported results into a dbf file format. 2008 nutrients_rf1 dbf tabular data ESRI OID Internal feature number ESRI Sequential unique whole numbers that are automatically generated RF1ID Unique ID to relate to the item MRB_ID in the MRB_E2RF1WS catchment and MRB_E2RF1 reach coverages. U.S. Geological Survey Sequential unique whole numbers that are automatically generated MANC_N Sum total of Nitrogen from Manure in confined operations in kilograms U.S. Geological Survey 0 17163370 kilograms per year MANC_P Sum total of Phosphorus from Manure in confined operations in kilograms U.S. Geological Survey 0 3644445 kilograms per year MANU_N Sum total of Nitrogen from Manure in unconfined operations in kilograms U.S. Geological Survey 0 6459616 kilograms per year MANU_P Sum total of Phosphorus from Manure in unconfined operations in kilograms U.S. Geological Survey 0 1567027 kilograms per year FARM_N Sum total of Nitrogen from farm areas in kilograms U.S. Geological Survey 0 69899530 kilograms per year FARM_P Sum total of Phosphorus from farm areas in kilograms U.S. Geological Survey 0 12184800 kilograms per year NOFARM_N Sum total of Nitrogen from non-farm areas in kilograms U.S. Geological Survey 0 3712059 kilograms per year NOFARM_P Sum total of Phosphorus from non-farm areas in kilograms U.S. Geological Survey 0 513813 kilograms per year U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://water.usgs.gov/user_feedback_form.html Downloadable Data Although this dataset has been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data and related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. dbf Full coverage zipped 74 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb1.zip dbf Full coverage zipped 323 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb2.zip dbf Full coverage zipped 444 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb3.zip dbf Full coverage zipped 431 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb4.zip dbf Full coverage zipped 311 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb5.zip dbf Full coverage zipped 153 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb6.zip dbf Full coverage zipped 303 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb7.zip dbf Full coverage zipped 74 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_nutrients_mrb8.zip None. This dataset is provided by the USGS as a public service. 20100817 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

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Reston Virginia 20192 USA 1-888-275-8747 (1-888-ASK-USGS) http://answers.usgs.gov/cgi-bin/gsanswers?pemail=h2oteam&subject=GIS+Dataset+mrb_e2rf1_nutrients FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998