Identification_Information:
  Citation:
    Citation_Information:
      Originator: John Mullaney
      Publication_Date: not published
      Title: hu8time: runoff from Dave Wolock, written commun. 2006
      Geospatial_Data_Presentation_Form: raster digital data
      Online_Linkage: none
  Description:
    Abstract: This data set was used to help with calculating chloride in surface water and groundwater 1994-2002.  The original data were obtained from Dave Wolock and covers the time period 1900-2002.  The average runoff 1994-2002 was caclulated specifically for this report and was used to create the cl_ro_clip raster data set.	Mullaney, J.R., Lorenz, D.L., Arntson, A.D., 2009, Chloride in groundwater and surface water in areas underlain by the glacial aquifer system, northern United States: U.S. Geological Survey Scientific Investigations Report 2009-5086, 41 p. http://pubs.usgs.gov/sir/2009/5086/
  Time_Period_of_Content:
    Time_Period_Information:
      Single_Date/Time:
        Calendar_Date: 2002
    Currentness_Reference: unknown
  Status:
    Progress: complete
    Maintenance_and_Update_Frequency: none planned
  Spatial_Domain:
    Bounding_Coordinates:
      West_Bounding_Coordinate: -127.887748
      East_Bounding_Coordinate: -65.346810
      North_Bounding_Coordinate: 51.608770
      South_Bounding_Coordinate: 22.860749
  Keywords:
    Theme:
      Theme_Keyword_Thesaurus: none
      Theme_Keyword: REQUIRED: runoff
  Access_Constraints: for internal use only -- data has not been reviewed or published. user must verify accuracy
  Use_Constraints:  for internal use only -- data has not been reviewed or published. user must verify accuracy
  Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.0.1770
Data_Quality_Information:
  Lineage:
    Process_Step: obtain data set from Dave Wolock 
      Process_Description: 
          Below is the email John Mullaney got from Dave Wolock regarding the
          hu8time data.  

          John,
          There is no metadata report. The only description is this blurb 
          which has been on the web. 
          
          USGS daily streamflow data for water-years 1900-2002 were used to 
          estimate runoff (streamflow per unit area) for the hydrologic 
          cataloging units in the conterminous United States following the 
          approach of Krug et al. (1987). This was accomplished by first 
          identifying streamgages with the following characteristics: 
          (1) complete data for each water-year, (2) drainage basins 
          contained entirely within a cataloging unit and (3) drainage 
          areas that did not overlap with the drainage basins of other 
          streamgages in the same cataloging unit. The average daily flow 
          for the water-year then was divided by the drainage basin area for 
          each streamgage to calculate runoff, and a drainage-basin-area 
          weighted average runoff value was computed for each cataloging 
          unit. An adequate number of streamgages were identified using the 
          above criteria for only for some cataloging units during some years.
          For the remainder of the cataloging units, the runoff estimates 
          were based on (1) streamgages with small drainage basins with an 
          unknown degree of overlap, (2) runoff values for neighboring 
          cataloging units, and (3) average runoff values for larger 
          accounting units.
          
          Reference
          
          Krug, W.R., Gebert, W.A., and D.J. Graczyk, 1987, Preparation of
          average annual runoff map of the United States, 1951-80. 
          U.S. Geological Survey Open-File Report 87-535, 414 pp. 
          
          The dataset you have will soon be replaced by an updated 
          version. The updated version uses a somewhat different 
          method runs much faster and provides similar estimates. The 
          new dataset runs through 2008.
          
          Dave

      Source_Used_Citation_Abbreviation: personal communication, 2006
      Process_Date: 2006

    Process_Step: calculate average runoff 1994-2002.
      Process_Description: In Arc workstation, add a new item to the 
           hu8time.vat to hold the average runoff from 1994-2002.
           Arc: additem hu8time.vat hu8time.vat runav94_02 8 8 i

           get into tables and calculate the average runoff 1994-2002 for 
           the hu8time grid.

           tables
           Tables: sel hu8time.vat
           2108 Records Selected.
           Tables: calc runav94_02 = ( RUN1994 + RUN1995 + RUN1996 + RUN1997 +                RUN1998 + RUN1999 + RUN2000 + RUN2001 + RUN2002 ) / 9
           Tables: q
 Source_Used_Citation_Abbreviation: none
      Process_Date: 2007
Spatial_Data_Organization_Information:
  Direct_Spatial_Reference_Method: Raster
  Raster_Object_Information:
    Raster_Object_Type: Grid Cell
    Row_Count: 2905
    Column_Count: 4614
    Vertical_Count: 1
Spatial_Reference_Information:
  Horizontal_Coordinate_System_Definition:
    Planar:
      Map_Projection:
        Map_Projection_Name: Albers Conical Equal Area
        Albers_Conical_Equal_Area:
          Standard_Parallel: 29.500000
          Standard_Parallel: 45.500000
          Longitude_of_Central_Meridian: -96.000000
          Latitude_of_Projection_Origin: 23.000000
          False_Easting: 0.000000
          False_Northing: 0.000000
      Planar_Coordinate_Information:
        Planar_Coordinate_Encoding_Method: row and column
        Coordinate_Representation:
          Abscissa_Resolution: 1000.000000
          Ordinate_Resolution: 1000.000000
        Planar_Distance_Units: meters
    Geodetic_Model:
      Horizontal_Datum_Name: North American Datum of 1983
      Ellipsoid_Name: Geodetic Reference System 80
      Semi-major_Axis: 6378137.000000
      Denominator_of_Flattening_Ratio: 298.257222
Entity_and_Attribute_Information:
  Detailed_Description:
    Entity_Type:
      Entity_Type_Label: hu8time.vat
    Attribute:
      Attribute_Label: Rowid
      Attribute_Definition: Internal feature number.
      Attribute_Definition_Source: ESRI
      Attribute_Domain_Values:
        Unrepresentable_Domain: Sequential unique whole numbers that are automatically generated.
    Attribute:
      Attribute_Label: VALUE
    Attribute:
      Attribute_Label: COUNT
    Attribute:
      Attribute_Label: HU8
    Attribute:
      Attribute_Label: HU8AREAMI2
    Attribute:
      Attribute_Label: RUN1901
    Attribute:
      Attribute_Label: RUN1902
    Attribute:
      Attribute_Label: RUN1903
    Attribute:
      Attribute_Label: RUN1904
    Attribute:
      Attribute_Label: RUN1905
    Attribute:
      Attribute_Label: RUN1906
    Attribute:
      Attribute_Label: RUN1907
    Attribute:
      Attribute_Label: RUN1908
    Attribute:
      Attribute_Label: RUN1909
    Attribute:
      Attribute_Label: RUN1910
    Attribute:
      Attribute_Label: RUN1911
    Attribute:
      Attribute_Label: RUN1912
    Attribute:
      Attribute_Label: RUN1913
    Attribute:
      Attribute_Label: RUN1914
    Attribute:
      Attribute_Label: RUN1915
    Attribute:
      Attribute_Label: RUN1916
    Attribute:
      Attribute_Label: RUN1917
    Attribute:
      Attribute_Label: RUN1918
    Attribute:
      Attribute_Label: RUN1919
    Attribute:
      Attribute_Label: RUN1920
    Attribute:
      Attribute_Label: RUN1921
    Attribute:
      Attribute_Label: RUN1922
    Attribute:
      Attribute_Label: RUN1923
    Attribute:
      Attribute_Label: RUN1924
    Attribute:
      Attribute_Label: RUN1925
    Attribute:
      Attribute_Label: RUN1926
    Attribute:
      Attribute_Label: RUN1927
    Attribute:
      Attribute_Label: RUN1928
    Attribute:
      Attribute_Label: RUN1929
    Attribute:
      Attribute_Label: RUN1930
    Attribute:
      Attribute_Label: RUN1931
    Attribute:
      Attribute_Label: RUN1932
    Attribute:
      Attribute_Label: RUN1933
    Attribute:
      Attribute_Label: RUN1934
    Attribute:
      Attribute_Label: RUN1935
    Attribute:
      Attribute_Label: RUN1936
    Attribute:
      Attribute_Label: RUN1937
    Attribute:
      Attribute_Label: RUN1938
    Attribute:
      Attribute_Label: RUN1939
    Attribute:
      Attribute_Label: RUN1940
    Attribute:
      Attribute_Label: RUN1941
    Attribute:
      Attribute_Label: RUN1942
    Attribute:
      Attribute_Label: RUN1943
    Attribute:
      Attribute_Label: RUN1944
    Attribute:
      Attribute_Label: RUN1945
    Attribute:
      Attribute_Label: RUN1946
    Attribute:
      Attribute_Label: RUN1947
    Attribute:
      Attribute_Label: RUN1948
    Attribute:
      Attribute_Label: RUN1949
    Attribute:
      Attribute_Label: RUN1950
    Attribute:
      Attribute_Label: RUN1951
    Attribute:
      Attribute_Label: RUN1952
    Attribute:
      Attribute_Label: RUN1953
    Attribute:
      Attribute_Label: RUN1954
    Attribute:
      Attribute_Label: RUN1955
    Attribute:
      Attribute_Label: RUN1956
    Attribute:
      Attribute_Label: RUN1957
    Attribute:
      Attribute_Label: RUN1958
    Attribute:
      Attribute_Label: RUN1959
    Attribute:
      Attribute_Label: RUN1960
    Attribute:
      Attribute_Label: RUN1961
    Attribute:
      Attribute_Label: RUN1962
    Attribute:
      Attribute_Label: RUN1963
    Attribute:
      Attribute_Label: RUN1964
    Attribute:
      Attribute_Label: RUN1965
    Attribute:
      Attribute_Label: RUN1966
    Attribute:
      Attribute_Label: RUN1967
    Attribute:
      Attribute_Label: RUN1968
    Attribute:
      Attribute_Label: RUN1969
    Attribute:
      Attribute_Label: RUN1970
    Attribute:
      Attribute_Label: RUN1971
    Attribute:
      Attribute_Label: RUN1972
    Attribute:
      Attribute_Label: RUN1973
    Attribute:
      Attribute_Label: RUN1974
    Attribute:
      Attribute_Label: RUN1975
    Attribute:
      Attribute_Label: RUN1976
    Attribute:
      Attribute_Label: RUN1977
    Attribute:
      Attribute_Label: RUN1978
    Attribute:
      Attribute_Label: RUN1979
    Attribute:
      Attribute_Label: RUN1980
    Attribute:
      Attribute_Label: RUN1981
    Attribute:
      Attribute_Label: RUN1982
    Attribute:
      Attribute_Label: RUN1983
    Attribute:
      Attribute_Label: RUN1984
    Attribute:
      Attribute_Label: RUN1985
    Attribute:
      Attribute_Label: RUN1986
    Attribute:
      Attribute_Label: RUN1987
    Attribute:
      Attribute_Label: RUN1988
    Attribute:
      Attribute_Label: RUN1989
    Attribute:
      Attribute_Label: RUN1990
    Attribute:
      Attribute_Label: RUN1991
    Attribute:
      Attribute_Label: RUN1992
    Attribute:
      Attribute_Label: RUN1993
    Attribute:
      Attribute_Label: RUN1994
    Attribute:
      Attribute_Label: RUN1995
    Attribute:
      Attribute_Label: RUN1996
    Attribute:
      Attribute_Label: RUN1997
    Attribute:
      Attribute_Label: RUN1998
    Attribute:
      Attribute_Label: RUN1999
    Attribute:
      Attribute_Label: RUN2000
    Attribute:
      Attribute_Label: RUN2001
    Attribute:
      Attribute_Label: RUN2002
    Attribute:
      Attribute_Label: MEAN94_02
Distribution_Information:
  Resource_Description: Downloadable Data
  Standard_Order_Process:
    Digital_Form:
      Digital_Transfer_Information:
        Transfer_Size: 3.084
Metadata_Reference_Information:
  Metadata_Date: 20090921
  Metadata_Contact:
    Contact_Information:
      Contact_Organization_Primary:
        Contact_Organization: U.S. Geological Survey
        Contact_Person: John Mullaney
      Contact_Address: jmullane@usgs.gov
        Address_Type: email
  Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
  Metadata_Standard_Version: FGDC-STD-001-1998
  Metadata_Time_Convention: local time
  Metadata_Extensions:
    Online_Linkage: http://www.esri.com/metadata/esriprof80.html
    Profile_Name: ESRI Metadata Profile
