Metadata: Buried aquifer sensitivity

Buried aquifer sensitivity

This page last updated: 09/16/2024
Metadata created using Minnesota Geographic Metadata Guidelines


Go to Section:
  1. Overview
  2. Data Quality
  3. Data Organization
  4. Coordinate System
  5. Attributes
  6. Distribution - Get Data
  7. Metadata Reference

Section 1: Overview

Originator:Minnesota Department of Natural Resources

Title: Buried aquifer sensitivity

Abstract: Buried sand and gravel aquifer pollution sensitivity in Dodge County, Minnesota

Purpose: Dodge County Groundwater Atlas, Part B

Time Period of Content Date:

Currentness Reference: Source data were published 2019

Progress: Complete

Maintenance and Update Frequency: None Planned

Spatial Extent of Data: Dodge County, Minnesota

Bounding Coordinates: -93.046
-92.678
44.197
43.847

Place Keywords: Dodge County, Minnesota

Theme Keywords: pollution sensitivity, buried sand and gravel aquifer, buried sand aquifer

Theme Keyword Thesaurus: None

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 Minnesota 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 Information: Holly Johnson, GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul, MN  55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us

Browse Graphic: None available

Associated Data Sets: Dodge County Geologic Atlas, Part A, published by the Minnesota Geological Survey (MGS). More information and downloadable data for Part A available on the MGS site: http://www.mngs.umn.edu/county_atlas/countyatlas.htm

Section 2: Data Quality

Attribute Accuracy: 1:100,000

Logical Consistency: Data are topologically correct using ArcGIS Pro 3.1.2

Completeness: Complete

Horizontal Positional Accuracy:


Lineage: This pollution sensitivity feature class portrays estimates of travel time for contaminants to travel from the land surface to a buried sand aquifer. The estimate of travel time is assumed to be proportional to the cumulative fine-grained sediment (CFGS) thickness overlying a buried sand aquifer. The thicker the fine-grained sediment, the longer it takes for water to move through it.

Sensitivity calculations were made based on the cumulative thickness of fine-grained sediment overlying the top of an aquifer. Raster calculator was used to calculate the cumulative thickness from the till and fine-grained lake sediment thickness data from Part A provided by the MGS. Rasters were reclassified and converted to polygons.

The procedure document for determining buried aquifer pollution sensitivity based on cumulative fine-grained sediment thickness is available at http://files.dnr.state.mn.us/waters/groundwater_section/mapping/gw/gw02_ps-babs.pdf

Section 3: Spatial Data Organization (not used in this metadata)


Section 4: Coordinate System

Horizontal Coordinate Scheme: Universal Transverse Mercator

UTM Zone Number: 15

Horizontal Datum: NAD83

Horizontal Units: meters

Vertical Datum:

Vertical Units:

Depth Datum:

Depth Units:

Section 5: Attributes

Overview:

Detailed Citation:

Table Detail:
dodge_buried_aquifer_sensitivity
Field NameValid ValuesDefinitionDefinition Source
AQUIFER_Q
-
Quaternary aquifer name, usually mapped at county scale. Quaternary aquifers are named after buried sand units shown on Plate 4, Part A.
RATINGenumeratedrating based on cumulative thickness of fine-grained sediment in feet
VHvery high: 10 or less
Hhigh: >10 to 20
Mmoderate: >20 to 30
Llow: >30 to 40
VLvery low: >40

Section 6: Distribution

Publisher: Minnesota Department of Natural Resources, Ecological and Water Resources Division

Publication Date: 09/16/2024

Contact Person Information: Holly Johnson, GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul, MN  55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us

Distributor's Data Set Identifier:

Distribution Liability: These data were prepared from publicly available information only. Every reasonable effort has been made to ensure the accuracy of the factual data on which these files are 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 Department of Natural Resources.

Ordering Instructions: Download zip file of metadata and feature classes by clicking "I AGREE" below.

PDFs of the County Groundwater Atlas can be downloaded at: http://www.dnr.state.mn.us/waters/groundwater_section/mapping/status.html

Online Linkage: I AGREE to the notice in "Distribution Liability" above. Clicking to agree will either begin the download process, link to a service, or provide more instructions. See "Ordering Instructions" above for details.

Section 7: Metadata Reference

Metadata Date: 09/16/2024

Contact Person Information: Holly Johnson, GIS Specialist
Minnesota Department of Natural Resources
500 Lafayette Rd
St. Paul, MN  55155-4025
Phone: 651-259-5693
Email: holly.je.johnson@state.mn.us

Metadata Standard Name: Minnesota Geographic Metadata Guidelines

Metadata Standard Version: 1.2



This page last updated: 09/16/2024
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