Leah E. Staub Michael E. Wieczorek Kendall C. Wnuk 20250707 vector digital data https://doi.org/10.5066/P98IG8LO This dataset represents 9,097 basin boundaries (rdews_gages.shp) of select U.S. Geological Survey's (USGS) active and historical stream gages derived from the published datasets of stream gage basins (Wieczorek, 2006), GAGESII (Falcone, 2011), and delineated from digital elevation models found in the NHDPlus version 1 data suite (NHDPlus, 2006). These basins were created to assist in spatial processing of model inputs for the U.S. Geological Survey's (USGS) Data-Driven Drought Prediction Project of the Drought Science Program within the Water Resources Mission Area's Water Resource Availability Program. These data sets were created by the U.S. Geological Survey's (USGS) Data-Driven Drought Prediction Project of the Drought Science Program within the Water Resources Mission Area's Water Resource Availability Program. This project focuses on the development of a regional model prototype for streamflow drought prediction, applying data-driven methods in conjunction with members of the National Drought Prediction project. These data were processed to be used as spatial units to process data sets of natural, climatic, and anthropogenic landscape features to support statistical analysis, map display, and model parameterization. 2011 publication date Complete As needed -127.7587 -65.7104 51.4699 24.6542 ISO 19115 Topic Category inlandwaters None streamgage watersheds NHDPlus GAGESII Alexandria Digital Library Feature Type Thesaurus basins USGS Metadata Identifier USGS:64510406d34eefd5da80a2c7 None conterminous united states None The USGS shall not be held liable for improper or incorrect use of these data, based on the description of appropriate/inappropriate uses described in this metadata document. It is strongly recommended that these data be directly acquired from the distributor and not indirectly through other sources that may have changed the data in some way. These data should not be used at scales greater than 1:24,000 for the purpose of identifying hydrographic watershed boundary feature locations. The USGS makes no claims for the data's suitability for other purposes. The USGS should be acknowledged as the data source in products derived from these data. The dataset is public information and may be interpreted by all organizations, agencies, units of government, or others based on needs; however, they are responsible for the appropriate application of the data. Files are dated, and users are responsible for obtaining the latest version of the data from the source distributor. Basin boundaries are based on the published locations of "USGS Streamgages Linked to the Medium Resolution NHD" (Stewart and others, 2006). Michael E. Wieczorek U.S. Geological Survey, Maryland-Delaware Water Science Center Geographer mailing and physical address

5522 Research Park Drive

Baltimore MD 21228 USA 443-498-5550 443-498-5510 mewieczo@usgs.gov Microsoft Windows 2000 Version 5.2 (Build 3790) Service Pack 2; ESRI ArcCatalog 9.3.1.3000 Falcone, James 20111012 vector digital data Reston, Virginia U.S. Geological Survey https://doi.org/10.5066/P96CPHOT Delineated basin areas were within 15 percent of the basin area reported in the National Water Information System (NWIS). None None USEPA, Horizon Systems Corporation 2006 raster digital data Washington, D.C. U.S. Environmental Protection Agency http://www.horizon-systems.com/nhdplus/ digital raster data 2011 publication date NHDPlus Version 1 The source data provided digital elevation models for watershed processing. Wieczorek, Michael E. 2012 vector digital data Data Series DS-719 Reston, VA U.S. Geological Survey https://www.sciencebase.gov/catalog/item/get/631405ccd34e36012efa32dc digital data 2012 publication date streamgages basins The source data provided basin boundaries of USGS stream gages. James A. Falcone 2011 publication n/a US Geological Survey https://doi.org/10.3133/70046617 Digital and/or Hardcopy 2011 publication date gagesii Source data provided information on USGS stream gage boundaries. David W. Stewart, Alan Rea David M. Wolock 2006 tabular digital data Data Series DS-195 Reston, VA U.S. Geological Survey https://water.usgs.gov/GIS/metadata/usgswrd/XML/streamgages.xml Digital and/or Hardcopy 2006 publication date streamgages The source data provided the locations of USGS stream gages. Basins were delineated only for those gages that did not exist in the streamgage basins (Wieczorek, 2012) but did in GAGESII (Falcone, 2012). An additional 30 stream gages were also included in the Colorado River basin that were not in either dataset. This resulted in 890 gage locations to be delineated. Stream gage locations for these 890 gages were provided from the USGS published dataset, GageLoc (Stewart and others, 2006). Visual inspection and editing were performed to place gage locations in their proper place on NHDPlus Version 1 flow direction and flow accumulation rasters for further processing outlined in Step 2. NHDPlus Version 1 streamgages basins gagesii 20220831 Leah E Staub U.S. Geological Survey, Northeast Region Physical Scientist Technician mailing address

5522 Research Park Drive

Catonsville MD 21228 US 443-498-5591 443-498-5510 lstaub@usgs.gov Basins were delineated for the 890 gages outlined in Step1. Watersheds were delineated using the ESRI WATERSHED function, which uses flow-direction grids from the NHDPlus version 1 data suite (USEPA, 2006) and point locations derived in Step 1. Only the basin boundaries that were delineated within 15 percent of the basin area reported in the National Water Information System (NWIS) were retained and referred to as rdews_basins. This resulted in 632 out 890 basins deemed delineated correctly. The remaining 258 basins were retained from the gagesii dataset and included in the final set of 9,097 stream gage basins. NHDPlus Version 1 streamgages 20220831 Leah E Staub U.S. Geological Survey, Northeast Region Physical Scientist Technician mailing address

5522 Research Park Drive

Catonsville MD 21228 US 443-498-5591 443-498-5510 lstaub@usgs.gov Vector G-polygon 9097 Albers Conical Equal Area 29.5 45.5 -96.0 23.0 0.0 0.0 coordinate pair 0.6096 0.6096 meters North_American_Datum_1983 GRS_1980 6378137.0 298.257222101 rdews_gages.shp Shapefile of 9.097 basin boundaries used in RDEWS modeling, analysis and map display. U.S. Geological Survey FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Shape type of feature. StaID Streamgage Station Identification number assigned by the U.S. Geological Survey. U.S. Geological Survey Unique Identification number assigned by the U.S. Geological Survey. sqm Basin area in square meters. U.S. Geological Survey 211500 624696130812 square meters source Origin of each basin used in this dataset. U.S. Geological Survey streamgage_basins refers to Wieczorek, 2012 basins. U.S. Geological Survey gagesii refers to Falcone, 2011 basins. U.S. Geological Survey rdews refers to Staub, 2023 basins. U.S. Geological Survey U.S. Geological Survey GS ScienceBase mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov 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. Digital Data https://doi.org/10.5066/P98IG8LO None 20250708 Leah E Staub U.S. Geological Survey, Northeast Region Physical Scientist Technician mailing address

5522 Research Park Drive

Catonsville MD 21228 US 443-498-5591 443-498-5510 lstaub@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998