Michael E. Wieczorek Andrew E. LaMotte 2010 tabular digital data Digital Data Series DS-491-01 Reston, Virginia U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?mrb_e2rf1_adrain This tabular data set represents the estimated area of artifical drainage for the year 1992 and irrigation types for the year 1997 compiled for every MRB_E2RF1 catchment of Major River Basins (MRBs, Crawford and others, 2006). The source data sets were derived from tabular National Resource Inventory (NRI) data sets created by the National Resources Conservation Service (NRCS, U.S. Department of Agriculture, 1995, 2000). Artificial drainage is defined as subsurface drains and ditches. Irrigation types are defined as gravity and pressure. Subsurface drains are described as conduits, such as corrugated plastic tubing, tile, or pipe, installed beneath the ground surface to collect and/or convey drainage. Surface drainage field ditches are described as graded ditches for collecting excess water. Gravity irrigation source is described as irrigation delivered to the farm and/or field by canals or pipelines open to the atmosphere; and water is distributed by the force of gravity down the field by: (1) A surface irrigation system (border, basin, furrow, corrugation, wild flooding, etc.) or (2) Sub-surface irrigation pipelines or ditches. Pressure irrigation source is described as irrigation delivered to the farm and/or field in pump or elevation-induced pressure pipelines, and water is distributed across the field by: (1) Sprinkle irrigation (center pivot, linear move, traveling gun, side roll, hand move, big gun, or fixed set sprinklers), or (2) Micro irrigation (drip emitters, continuous tube bubblers, micro spray or micro sprinklers). NRI data do not include Federal lands and are thus excluded from this dataset. The tabular data for drainage were spatially apportioned to the National Land Cover Dataset (NLCD, Kerie Hitt, U.S. Geological Survey, written commun., 2005) and the tabular data for irrigation were spatially apportioned to an enhanced version of the National Land Cover Dataset (NLCDe, Nakagaki and others, 2007). 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 areas of artifical drainage for the 1992 time period and areas of irrigation for 1997 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. 1992 1997 publication date Complete None planned -127.910792 -65.327751 51.657387 23.243486 None Artificial drainage and irrigation 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 Michael E. Wieczorek U.S. Geological Survey mailing address

5522 Research Park Drive

Baltimore MD 21228 USA 443-498-5550 443-498-5510 mewieczo@usgs.gov http://water.usgs.gov/GIS/browse/mrb_e2rf1_adrain.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 The values of the items were verified for computational accuracy by the author and reviewers. Current at Time of Release 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 unknown publication date ERF1_2 The source provided a reach network to construct reach catchments for selected MRBs. 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_E2RF1WS 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_E2RF1 The source data provided reach catchments for MRBs and subsequent processing. U.S. Department of Agriculture Natural Resources Conservation Service 2000 tabular digital data Ames, Iowa Natural Resources Conservation Service and Statistical Laboratory http://www.ncgc.nrcs.usda.gov/products/nri/order.html online 1997 publication date NRI (National Resource Inventory) The NRI data provided artificial drainage information. U.S. Department of Agriculture Natural Resources Conservation Service 1995 tabular digital data Ames, Iowa Natural Resources Conservation Service and Statistical Laboratory U.S. Department of Agriculture. May 1995 (Reissued). 1992 National Resources Inventory, Natural Resources Conservation Service and Statistical Laboratory, Iowa State University, Ames, Iowa, CD-ROM. http://www.ncgc.nrcs.usda.gov/products/nri/order.html online 1992 publication date NRI (National Resource Inventory) TThe NRI data provided artificial drainage information. Nakagaki, Naomi Price, Curtis V. Falcone, James A. Hitt, Kerie J. Ruddy, Barbara C. November 2007 raster digital data Sacramento, CA U.S. Geological Survey http://water.usgs.gov/lookup/getspatial?nlcde92 online 2001 publication date NLCD (National Land Cover Dataset) THE NLCD provided the spatial component for approtioning the NRI values. The reason for creating this data set was to summarize and provide refined spatial detail to attributes from the NRI data set to support hydrologic modeling. This data set was derived by summarizing NRI attributes to the county level then apportioning these county values to the NLCD and the NLCDe land-use classifications. The value of each grid cell represents the area of each 30-meter grid cell that is covered by or subject to an individual NRI land use practice. The process for summarizing and distributing NRI attributes involved the following 4 steps: 1) Aggregate NRI agricultural land-use categories into corresponding NLCD and NLCDe land-cover categories. 2) Sum the area of the new NRI land-cover category and NRI land practice variable by land-cover category for each county in the conterminous United States. 3) Calculate a NRI intensity value for a county by dividing NRI land practice variable by land-cover category per county by the NRI land-cover category per county. 4) Transfer this intensity value by aggregated land-cover categories in NRI to the corresponding NLCD/NLCDe categories by county and multiplying by 900 (square meters in a 30-meter grid cell). Federal lands are masked out and not used. For example: in a hypothetical county NRI lists: 10 acres with Conservation Practice (CP) 312 on row crops, and total cropland in the county is 100 (using the codes selected out for NRI cropland listed below). This would yield: CP600crop = 0.1 (10/100). For every cell in the hypothetical county where NLCD/NLCDe equals row crop, that cell's NRI practice value will be 0.1 * 900 or 90, which is defined as 90 square meters of that cell is estimated to have CP312 practiced in that cell. 5) Summarize total NRI practice by MRB_E2RF1 catchment using the ZONALSUM command in GRID. 6) Export results into a dbf file format. The following is a crosswalk from NRI land cover categories to NLCD/NLCDe categories. NRI CODE-- NRI DEFINITION-- NLCDe/NLCD CODE-- NLCD/NLCDe DEFINITION 1-- Fruit, Horticultural-- 61-- Orchards 2-- Nut-Horticultural-- 61-- Orchards 3-- Vineyard-Horticultural-- 61-- Orchards 4-- Bush Fruit-Horticultural-- 61-- Orchards 5-- Berry-Horticultural-- 61-- Orchards 6-- Other-Horticultural-- 61-- Orchards 11-- Corn-Row Crops-- 82-- Row Crops 12-- Sorghum-Row Crops-- 82-- Row Crops 13-- Soybeans-Row Crops-- 82-- Row Crops 14-- Cotton-Row Crops-- 82-- Row Crops 15-- Peanuts-Row Crops-- 82-- Row Crops 16-- Tobacco-Row Crops-- 82-- Row Crops 17-- Beets-Row Crops-- 82-- Row Crops 18-- Potatoes-Row Crops-- 82-- Row Crops 19-- Other Vegetable and Truck Crops--Row Crops-- 82-- Row Crops 20-- All Other Row Crops-- 82-- Row Crops 21-- Sunflowers-Close Grown Cropland-- 82-- Row Crops 111-- Wheat-Close Grown Cropland-- 82-- Row Crops 112-- Oats-Close Grown Cropland-- 82-- Row Crops 113-- Rice-Close Grown Cropland-- 82-- Row Crops 114-- Barley-Close Grown Cropland-- 82-- Row Crops 116-- All other Close Grown Cropland-- 82-- Row Crops 141-- Grass-Hayland-- 81-- Pasture/Hay 142-- Legume-Hayland-- 81-- Pasture/Hay 143-- Legume-Grass-Hayland-- 81-- Pasture/Hay 170-- Summer Fallow-Other Cropland-- 81-- Pasture/Hay 171-- Aquaculture in a Crop Rotation-Other Cropland-- 81-- Pasture/Hay 180 --Other Cropland-- Not Planted 81-- Pasture/Hay 211-- Grass-Pastureland-- 81-- Pasture/Hay 212-- Legume-Pastureland-- 81-- Pasture/Hay 213 --Grass-Forbs-Legumes Mixed-Pastureland --81-- Pasture/Hay 400-- Farmsteads and Ranch Headquarters-Other Farm Land-- 81-- Pasture/Hay 401-- Other Land in Farms-Other Farm Land-- 81-- Pasture/Hay 650-- All Other Rural--81-- Pasture/Hay 2008 adrain_rf1 dbf tabular data file Arc/Info (R) GIS software OID Internal feature number ESRI Sequential unique whole numbers that are automatically generated RF1ID Unique ID to relate to the modified ERF1_2 catchment and reach coverages. U.S. Geological Survey Sequential unique whole numbers that are automatically generated TILES Estimated area of tile drains in square meters for reach catchment (based on 1992 NRI data) Michael E. Wieczorek 100 2066510700 DITCHES Estimated area subject to the practice of ditches in square meters for reach catchment (based on 1992 NRI data) Michael E. Wieczorek 100 2066510700 ADRAIN Estimated area subject to artificial drainage practices in square meters for reach catchment (based on 1992 NRI) defined as ditches and tiles Michael E. Wieczorek 100 2066510700 IRRIG Estimated area subject to the practice of irrigation in square meters for reach catchment (based on 1997 NRI) Michael E. Wieczorek 100 2066510700 U.S. Geological Survey Ask USGS -- Water Webserver Team mailing address

445 National Center

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 65 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb1.zip dbf Full coverage zipped 88 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb2.zip dbf Full coverage zipped 170 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb3.zip dbf Full coverage zipped 125 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb4.zip dbf Full coverage zipped 84 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb5.zip dbf Full coverage zipped 46 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb6.zip dbf Full coverage zipped 100 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_mrb7.zip dbf Full coverage zipped 28 KB http://water.usgs.gov/GIS/dsdl/mrb_e2rf1_adrain_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

445 National Center

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_adrain FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998