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: GWSL2PY

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 GWSL2PY
Minnesota Clearinghouse ID  
Abstract Ground water pollution sensitivity, modified level 2, water table.
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 The following layers were combined with the ARC 'union' command to create the pollution sensitivity coverage, and the appropriate attributes were used to assess pollution sensitivity ratings:
  • Surficial geology from Part A, Plate 3, published by the MGS, 1995. Sediment permeability class values were determined by Jan Falteisek. Geologic units were classified into four categories from least to most permeable.
  • Depth -to-water polygon coverage created from a SURFER file of interpolated, 1000-ft.-interval depth-to-water values kriged from field measurements that Mike Trojan made. See metadata for 'dtwpy.'
The following three layers allowed for the selective application of higher sensitivity ratings to areas with special conditions:
  • Geomorphology of Minnesota - generalized surficial geology layer created by the University of Minnesota, Duluth, the MGS, and the Minnesota DNR. See file (landfne2.html) metadata on the DNR data deli for detailed metadata for this coverage. Polygons representing the Red River lobe and the Big Stone geologic phase were selected and given higher sensitivity ratings than the model would have otherwise provided.
  • Pelican River Aquifer digitized by Randy McGregor from USGS manuscript (USGS, 1982, The Appraisal of the Pelican River Sand-Plain Aquifer, Western Minnesota).The scale of the manuscript was 1:26,720. 
  • Part of an unnamed aquifer in southwestern Otter Tail County digitized by the USGS from its map of major aquifers in the region (D.L Lorenz and J.D. Stoner, 1996, Sampling Design for Assessing Water Quality of the Red River of the North Basin, Minnesota, North Dakota, and South Dakota, 1993-1995, Water Investigations Report 96-412). Questions about this data layer can be directed to David Lorenz, lorenz@usgs.gov
Pollution sensitivity ratings were applied based on criteria explained in RHA-3, Part B, Plate 4, then the ARC 'dissolve' command was used on the sensitivity rating item.

The ARC 'eliminate' command removed polygons of 1000 square meters or smaller.

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 
GWSL2PY.PAT         Polygon Attribute Table
  senrating 25 2,2,c   Pollution sensitivity rating based on estimated vertical travel time for water-borne surface contaminants to reach the aquifer.
        'VH' Very High - Hours to months
           
        'H' High - Weeks to years
        'M' Medium - Years to decades
        'L' Low - More than a century
        'NR' Not Rated - Mostly open water
  sensymbol 27 2,2,i   Pollution sensitivity rating as a number
        0 Not Rated
        1 Very High
        2 High
        3 Medium
        4 Low

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