County Geologic Atlas Program


Southern Red River Valley, Minnesota Regional Hydrogeologic Assessment, Part B

Minnesota Geographic Metadata Guidelines
Version 1.0.4 - July 1, 1997

A State Version of the FGDC Content Standards for Geospatial Metadata


Data Set Name: DTWPY

Metadata Entered By: Randy McGregor

Date: 9/24/99


Section 1 Identification Information
Originator Minnesota Department of Natural Resources, Division of Waters, Ground Water Mapping Program
Title DTWPY
Minnesota Clearinghouse ID --
Abstract Depth to water table, polygons.
Purpose Regional Hydrogeologic Assessment Series RHA-3, Part B, Plate 4 Pollution Sensitivity
Time Period of Content Date 1995-1999
Currentness Reference  
Progress Complete
Maintenance and Update Frequency None planned
Spatial Extent of Data Southern Red River Valley, Minnesota, including: all of Norman, Clay, and Wilkin counties, western portions of Mahnomen, Becker, and Otter Tail counties; part of northern Traverse County, and part of northwestern Grant County. This is the area of Minnesota within USGS 1:100,000 scale tile-sheets 1910 (Ada), 2310 (Fargo), and 2710 (Wahpeton).
West Bounding Coordinate 207,977 --
East Bounding Coordinate 274,044 --
North Bounding Coordinate 5,267,921 --
South Bounding Coordinate 5,098,424 --
Place Keywords Becker, Clay, Grant, Mahnomen, Norman, Otter Tail, Traverse, Wilkin counties, Red River of the North, Red River Valley
Theme Keyword Pollution Sensitivity, Ground Water
Theme Keyword Thesaurus  
Access Constraints None
Use Constraints Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.
Contact Person See Metadata Reference Information, below
Contact Organization "
Contact Person Position "
Contact Address "
Contact City "
Contact State or Province "
Contact Postal Code "
Contact Voice Phone "
Contact Fax Phone "
Contact E-mail Address "
Browse Graphic File Name --
Browse Graphic File Description --
Associated Data Sets Southern Red River Valley Regional Hydrogeologic Assessment, Part A - Produced by the Minnesota Geological Survey

Section 2 Data Quality Information
Attribute Accuracy  
Logical Consistency Data are topologically correct using ARC/INFO 7.0.3
Completeness Complete
Horizontal Positional Accuracy N.A.
Vertical Positional Accuracy N.A.
  • Lineage
  • A file of depth-to-water readings for several locations in the Southern Red River Study Area was kriged in Surfer, creating a grid file of interpolated readings every 1000 meters.
  • This file was converted into a DBF file in Excel, made into an "event theme" in Arcview, converted into a shapefile, then into an ARC/INFO coverage.
  • The coverage was converted into a TIN with the ARC command 'arctin,' then the TIN was contoured with the ARC command 'tincontour' with a 10-foot contour interval.
  • The resulting contour coverage was combined with the study area boundary with the ARC 'union' command, and built as a polygon coverage.
  • The labels from the polygons were given depth-to-water values by overlaying them with a depth-to-water lattice (made by applying the ARC command 'tinlattice' to the depth-to-water TIN explained above), and interpolating a single depth-to-water value from several depth-to-water values on the lattice that are in the immediate proximity of each label point on the lattice. The ARC command 'latticespot' does this. This gives each polygon label a depth-to-water value, but each polygon actually represents a range of values, because it comprises the entire area between 10 foot contour lines.
  • Polygon labels with a depth-to-water value of less than 10 were given a range value of 1 ( less than 10 feet). Polygon labels with a depth-to-water value of greater than 10 and less than 20 are given a range value of 2 (10 to 20 feet), etc. See Entity and Attribute Information, below.
  • Source Scale Denominator 200,000

    Section 3 Spatial Data Organization Information
    Native Data Set Environment ARC/INFO
    Geographic Reference for Tabular Data Meters
    Spatial Object Type Vector
    Vendor Specific Object Types Polygons
    Tiling Scheme The area of Minnesota within USGS 1:100,000 scale tile-sheets 1910 (Ada), 2310 (Fargo), and 2710 (Wahpeton).

    Section 4 Spatial Reference Information
    Horizontal Coordinate Scheme UTM
    Ellipsoid GRS 1980
    Horizontal Datum NAD83
    Horizontal Units Meters
    Altitude Datum N.A.
    Altitude Units N.A.
    Depth Datum N.A.
    Depth Units N.A.
    Cell Width N.A.
    Cell Height N.A.
       

    Section 5 Entity and Attribute Information
    Entity and Attribute Overview  
    Entity and Attribute Detailed Citation  
    Table Name Field Name Begin Column Definition Valid Values Description
    DTWPY.PAT         Polygon Attribute Table
      DTWRANGE 27 2,2,i   Depth-to-water range
            1 Less than 10 feet
            2 10 to 20 feet
            3 20 to 30 feet
            4 30 to 40 feet
            5 Greater than 40 feet.

    Section 6 Distribution Information
    Publisher Minnesota Department of Natural Resources, Division of Waters
    Publication Date 2000
    Online Linkage --
    Distributor Contact Person See Metadata Reference Information, below.
    Distributor Organization "
    Distributor Position "
    Distributor Address "
    Distributor City "
    Distributor State or Province "
    Distributor Postal Code "
    Distributor Voice Phone "
    Distributor Fax Phone "
    Distributor
    E-mail Address
    "
    Distributor's Data Set Identifier  --
    Distribution Liability This map was prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which this map is based. However, the Department of Natural Resources does not warrant the accuracy, completeness, or any implied uses of these data. 

    Users may wish to verify critical information; sources include both the references here and information on file in the offices of the Minnesota Geological Survey and the Department of Natural Resources. Every effort has been made to ensure the interpretation shown conforms to sound geologic and cartographic principles. This map should not be used to establish legal title, boundaries, or locations of improvements.

    Transfer Format Name ARC/INFO, ArcExport, INFO
    Transfer Format Version Number 7.1.1
    Transfer Size  
    Ordering Instructions Download export files or shapefiles from: Southern Red River Valley Regional Hydrogeologic Assessment, Part B: Metadata for GIS and Digital

    Section 7 Metadata Reference Information
    Metadata Date 2000
    Metadata Contact Person  
    Metadata Contact Organization Minnesota Department of Natural Resources, Division of Waters
    Metadata Contact Position  
    Metadata Contact Address 500 Lafayette Road
    Metadata Contact City St. Paul
    Metadata Contact State or Province MN
    Metadata Contact Postal Code 55155 - 4032
    Metadata Contact Voice Phone 651 - 296 - 4800
    Metadata Contact Fax Phone 651 - 296 - 0445
    Metadata Contact
    E-mail Address
     
    Metadata Standard Name Minnesota geographic Metadata Guidelines
    Metadata Standard Version 1.0.4
    Metadata Standard Online Linkage --