Identification_Information: Citation: Citation_Information: Originator: Hitt, Kerie J. Publication_Date: 20040816 Title: NAWQA GIS ancillary data: Overland flow, mean annual recharge, mean annual runoff, slope, topographic wetness index, and subsurface flow contact time for sampling points Online_Linkage: Description: Abstract: This data set consists of percent Dunne overland flow from TOPMODEL, percent Horton overland flow from TOPMODEL, mean annual recharge, mean annual runoff (1951-80), slope from 1-km resolution DEMs, topographic wetness index, and subsurface flow contact time for NAWQA sampling sites. The input grids were prepared by David Wolock. The sampling sites are from the NAWQA data warehouse. Purpose: This is one of the ancillary GIS data layers developed to characterize NAWQA sampling sites for national synthesis of water-quality data. Supplemental_Information: The input data set did not include Alaska and Hawaii. Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 1991 Single_Date/Time: Calendar_Date: 2001 Currentness_Reference: The data set is intended to represent conditions for the early 1990's to late 1990's. Status: Progress: Complete Maintenance_and_Update_Frequency: NAWQA sampling sites are added as their locations become available. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -125 East_Bounding_Coordinate: -66 North_Bounding_Coordinate: 50 South_Bounding_Coordinate: 24 Keywords: Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Ground water Theme_Keyword: Surface water Theme_Keyword: Water quality Theme_Keyword: Overland flow Theme_Keyword: Dunne overland flow Theme_Keyword: Horton overland flow Theme_Keyword: Mean annual recharge Theme_Keyword: Slope Theme_Keyword: Topographic wetness index Theme_Keyword: Subsurface flow contact time Access_Constraints: The data set is for internal USGS access only. Use_Constraints: The data set is for internal USGS use only. Data_Quality_Information: Logical_Consistency_Report: none Completeness_Report: none Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Wolock, D.M. Publication_Date: 2002 Title: Overland flow, runoff, slope, topographic wetness index, and subsurface flow contact time grids Type_of_Source_Media: On line Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 1951 Single_Date/Time: Calendar_Date: 1990 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: None Source_Contribution: 5K grids of percent Dunne overland flow from TOPMODEL and percent Horton overland flow from TOPMODEL. 1K grids of mean annual runoff (1951-80), slope from 1-km resolution DEMs, topographic wetness index, and subsurface flow contact time. Source_Information: Source_Citation: Citation_Information: Originator: Wolock, D.M. Publication_Date: 2003 Title: Estimated mean annual natural ground-water recharge in the conterminous United States Series_Information: Series_Name: U.S. Geological Survey Open-File Report Issue_Identification: 03-311 Publication_Information: Publication_Place: Reston, VA Publisher: U.S. Geological Survey Geospatial_Data_Presentation_Form: raster digital data Online_Linkage: Type_of_Source_Media: On line Source_Time_Period_of_Content: Time_Period_Information: Multiple_Dates/Times: Single_Date/Time: Calendar_Date: 1951 Single_Date/Time: Calendar_Date: 1980 Source_Currentness_Reference: Ground condition Source_Citation_Abbreviation: None Source_Contribution: 1K grid of mean annual recharge created by multiplying BFI by mean annual runoff. Source_Information: Source_Citation: Citation_Information: Originator: Price, C. Publication_Date: 20040528 Title: NAWQA sampling points (NAWQAPT) Edition: May 2004 Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Rapid City, SD Publisher: U.S. Geological Survey Type_of_Source_Media: digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20040528 Source_Currentness_Reference: current Source_Citation_Abbreviation: NAWQAPT Source_Contribution: The location of all of the NAWQA sampling sites. Process_Step: Process_Date: 20020613 Process_Description: Intersected sampling points with each attribute using GRIDSPOT with Nearest option. The station is assigned the value of the grid cell that the point falls in. (March 2002 version of NAWQAPT.) Process_Step: Process_Date: 20020802 Process_Description: Intersected sampling points with each attribute using GRIDSPOT with Nearest option. The station is assigned the value of the grid cell that the point falls in. (July 2002 version of NAWQAPT.) Process_Step: Process_Date: 20030926 Process_Description: Intersected sampling points with each attribute using GRIDSPOT with Nearest option. The station is assigned the value of the grid cell that the point falls in. (July 2003 version of NAWQAPT.) Process_Step: Process_Date: 20040315 Process_Description: Intersected sampling points with each attribute using GRIDSPOT with Nearest option. The station is assigned the value of the grid cell that the point falls in. (March 2004 version of NAWQAPT.) Process_Step: Process_Date: 20040816 Process_Description: Intersected sampling points with each attribute using GRIDSPOT with Nearest option. The station is assigned the value of the grid cell that the point falls in. (May 2004 version of NAWQAPT.) Spatial_Data_Organization_Information: Indirect_Spatial_Reference: The data set is referenced by STAID, the station id of the NAWQA sampling site. Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: The data set is organized by STAID (station id). Missing data is indicated by -9999. The fields are: !STAID Station id !PERDUN Percent Dunne overland flow from TOPMODEL (%) !PERHOR Percent Horton overland flow from TOPMODEL (%) !RECHARGEBFI Mean annual recharge (1961-80) from base-flow analysis ! and Gebert runoff (inches) !RUNOFF Mean annual runoff (1951-80) from Gebert (inches) !SLOPE Slope from 1-km resolution DEMs (%) !TWI Topographic wetness index from 1-km resolution DEM (ln(m)) !CONTACT Subsurface flow contact time (days) Entity_and_Attribute_Detail_Citation: None Distribution_Information: Distributor: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Distribution_Liability: USGS assumes no liability for the use of this data set. Metadata_Reference_Information: Metadata_Date: 20040816 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Kerie Hitt Contact_Organization: USGS NAWQA Nutrients National Synthesis Contact_Address: Address_Type: Mailing address Address: 413 National Center City: Reston State_or_Province: VA Postal_Code: 20192 Country: USA Contact_Electronic_Mail_Address: kjhitt@usgs.gov Contact_Voice_Telephone: 703 648-6854 Contact_Instructions: Contact via email Metadata_Standard_Name: Content standards for digital geospatial metadata Metadata_Standard_Version: FGDC-STD-001-1998